58291
2020
2020
eng
571
585
15
4
206
article
Springer
Heidelberg
1
2020-05-28
2020-05-28
--
Intragenus F1-hybrids of African weakly electric fish (Mormyridae: Campylomormyrus tamandua male x C. compressirostris female) are fertile
Hybridization is widespread in fish and constitutes an important mechanism in fish speciation. There is, however, little knowledge about hybridization in mormyrids. F1-interspecies hybrids betweenCampylomormyrus tamandua male x C. compressirostris female were investigated concerning: (1) fertility; (2) survival of F2-fish and (3) new gene combinations in the F2-generation concerning the structure of the electric organ and features of the electric organ discharge. These F1-hybrids achieved sexual maturity at about 12-13.5 cm total length. A breeding group comprising six males and 13 females spawned 28 times naturally proving these F1-fish to be fertile. On average 228 eggs were spawned, the average fertilization rate was 47.8%. Eggs started to hatch 70-72 h after fertilization, average hatching rate was 95.6%. Average mortality rate during embryonic development amounted to 2.3%. Average malformation rate during the free embryonic stage was 27.7%. Exogenous feeding started on day 11. In total, we raised 353 normally developed larvae all of which died consecutively, the oldest specimen reaching an age of 5 months. During survival, the activities of the larval and adult electric organs were recorded and the structure of the adult electric organ was investigated histologically.
Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology
10.1007/s00359-020-01425-7
32468077
0340-7594
1432-1351
outputup:dataSource:WoS:2020
WOS:000542715400007
Kirschbaum, F (corresponding author), Humboldt Univ, Fac Life Sci, Albrecht Daniel Thaer Inst Agr & Hort Sci, Unit Biol & Ecol Fishes, Philippstr 13,Haus 16, D-10115 Berlin, Germany., frank.kirschbaum@staff.hu-berlin.de
Kirschbaum, Frank
2023-03-10T07:49:40+00:00
sword
importub
filename=package.tar
450425cbbc7e21244734ef13d1cf049d
1459295-2
231244-X
false
true
CC-BY - Namensnennung 4.0 International
Yevheniia Korniienko
Linh Nguyen
Stephanie Baumgartner
Marianne Vater
Ralph Tiedemann
Frank Kirschbaum
eng
uncontrolled
mormyridae
eng
uncontrolled
campylomormyrus
eng
uncontrolled
F1-hybrids
eng
uncontrolled
F2-hybrids
eng
uncontrolled
fertility
Medizin und Gesundheit
Institut für Biochemie und Biologie
Referiert
Import
Hybrid Open-Access
39061
2015
2015
eng
357
374
18
4
201
article
Springer
New York
1
--
--
--
Comparative histology of the adult electric organ among four species of the genus Campylomormyrus (Teleostei: Mormyridae)
The electric organ (EO) of weakly electric mormyrids consists of flat, disk-shaped electrocytes with distinct anterior and posterior faces. There are multiple species-characteristic patterns in the geometry of the electrocytes and their innervation. To further correlate electric organ discharge (EOD) with EO anatomy, we examined four species of the mormyrid genus Campylomormyrus possessing clearly distinct EODs. In C. compressirostris, C. numenius, and C. tshokwe, all of which display biphasic EODs, the posterior face of the electrocytes forms evaginations merging to a stalk system receiving the innervation. In C. tamandua that emits a triphasic EOD, the small stalks of the electrocyte penetrate the electrocyte anteriorly before merging on the anterior side to receive the innervation. Additional differences in electrocyte anatomy among the former three species with the same EO geometry could be associated with further characteristics of their EODs. Furthermore, in C. numenius, ontogenetic changes in EO anatomy correlate with profound changes in the EOD. In the juvenile the anterior face of the electrocyte is smooth, whereas in the adult it exhibits pronounced surface foldings. This anatomical difference, together with disparities in the degree of stalk furcation, probably contributes to the about 12 times longer EOD in the adult.
Journal of comparative physiology : A, Neuroethology, sensory, neural, and behavioral physiology
10.1007/s00359-015-0995-6
25752300
0340-7594
1432-1351
wos:2015
WOS:000351516700002
Kirschbaum, F (reprint author), Humboldt Univ, Fac Life Sci, Unit Biol & Ecol Fishes, Philippstr 13,Haus 16, D-10115 Berlin, Germany., frank.kirschbaum@staff.hu-berlin.de
University of Potsdam; Leibniz-SAW project GENART; Deutsche
Forschungsgemeinschaft [TI 349/1-1, TI 349/1-2]
Christiane Paul
Victor Mamonekene
Marianne Vater
Philine G. D. Feulner
Jacob Engelmann
Ralph Tiedemann
Frank Kirschbaum
eng
uncontrolled
Mormyridae
eng
uncontrolled
Campylomormyrus
eng
uncontrolled
Electric organ discharge
eng
uncontrolled
Electrocyte geometry
eng
uncontrolled
Electric organ ontogeny
Institut für Biochemie und Biologie
Referiert
36976
2011
2011
eng
89
99
11
1-2
273
article
Elsevier
Amsterdam
1
--
--
--
Comparative aspects of cochlear functional organization in mammals
This review addresses the functional organization of the mammalian cochlea under a comparative and evolutionary perspective. A comparison of the monotreme cochlea with that of marsupial and placental mammals highlights important evolutionary steps towards a hearing organ dedicated to process higher frequencies and a larger frequency range than found in non-mammalian vertebrates. Among placental mammals, there are numerous cochlear specializations which relate to hearing range in adaptation to specific habitats that are superimposed on a common basic design. These are illustrated by examples of specialist ears which evolved excellent high frequency hearing and echolocation (bats and dolphins) and by the example of subterranean rodents with ears devoted to processing low frequencies. Furthermore, structural functional correlations important for tonotopic cochlear organization and predictions of hearing capabilities are discussed.
Hearing research
10.1016/j.heares.2010.05.018
0378-5955
wos:2011-2013
WOS:000289608100011
Vater, M (reprint author), Univ Potsdam, Inst Biochem & Biol, Karl Liebknecht Str 26, D-14476 Golm, Germany., vater@uni-potsdam.de; koessl@bio.uni-frankfurt.de
Marianne Vater
Manfred Koessl
Institut für Biochemie und Biologie
Referiert
58469
2020
2020
eng
1052
1065
14
5
529
article
Wiley
Hoboken
1
2020-08-12
2020-08-12
--
Ontogeny of the electric organ discharge and of the papillae of the electrocytes in the weakly electric fish Campylomormyrus rhynchophorus (Teleostei: Mormyridae)
The electric organ of the mormyrid weakly electric fish,Campylomormyrus rhynchophorus(Boulenger, 1898), undergoes changes in both the electric organ discharge (EOD) and the light and electron microscopic morphology as the fish mature from the juvenile to the adult form. Of particular interest was the appearance of papillae, surface specializations of the uninnervated anterior face of the electrocyte, which have been hypothesized to increase the duration of the EOD. In a 24.5 mm long juvenile the adult electric organ (EO) was not yet functional, and the electrocytes lacked papillae. A 40 mm long juvenile, which produced a short biphasic EOD of 1.3 ms duration, shows small papillae (average area 136 mu m(2)). In contrast, the EOD of a 79 mm long juvenile was triphasic. The large increase in duration of the EOD to 23.2 ms was accompanied by a small change in size of the papillae (average area 159 mu m(2)). Similarly, a 150 mm long adult produced a triphasic EOD of comparable duration to the younger stage (24.7 ms) but featured a prominent increase in size of the papillae (average area 402 mu m(2)). Thus, there was no linear correlation between EOD duration and papillary size. The most prominent ultrastructural change was at the level of the myofilaments, which regularly extended into the papillae, only in the oldest specimen-probably serving a supporting function. Physiological mechanisms, like gene expression levels, as demonstrated in someCampylomormyrusspecies, might be more important concerning the duration of the EOD.
The journal of comparative neurology
10.1002/cne.25003
32785950
0021-9967
1096-9861
outputup:dataSource:WoS:2021
WOS:000566925800001
Kirschbaum, F (corresponding author), Humboldt Univ, Fac Life Sci, Albrecht Daniel Thaer Inst Agr & Hort Sci, Unit Biol & Ecol Fishes, Philippstr 13,House 16, D-10115 Berlin, Germany., frank.kirschbaum@staff.hu-berlin.de
Friedrich Naumann Foundation for Freedom
Kirschbaum, Frank
2023-03-22T07:26:16+00:00
sword
importub
filename=package.tar
e163cef942b39482f571f480c4cf6c93
1474879-4
3086-7
false
true
CC-BY - Namensnennung 4.0 International
Yevheniia Korniienko
Ralph Tiedemann
Marianne Vater
Frank Kirschbaum
eng
uncontrolled
Campylomormyrus
eng
uncontrolled
electric organ discharge
eng
uncontrolled
electrocyte ontogeny
eng
uncontrolled
electrocyte ultrastructure
eng
uncontrolled
papillae
Biowissenschaften; Biologie
Medizin und Gesundheit
Institut für Biochemie und Biologie
Referiert
Import
Hybrid Open-Access
15279
2004
2004
eng
article
1
--
--
--
Specializations for aerial hawking in the echolocation system of Molossus molossus (Molossidae, Chiroptera)
While searching for prey, Molossus molossus broadcasts narrow-band calls of 11.42 ms organized in pairs of pulses that alternate in frequency. The first signal of the pair is at 34.5 kHz, the second at 39.6 kHz. Pairs of calls with changing frequencies were only emitted when the interpulse intervals were below 200 ms. Maximum duty cycles during search phase are close to 20%. Frequency alternation of search calls is interpreted as a mechanism for increasing duty cycle and thus the temporal continuity of scanning, as well as increasing the detection range. A neurophysiological correlate for the processing of search calls was found in the inferior colliculus. 64% of neurons respond to frequencies in the 30- to 40-kHz range and only in this frequency range were closed tuning curves found for levels below 40 dB SPL. In addition, 15% of the neurons have double-tuned frequency-threshold curves with best thresholds at 34 and 39 kHz. Differing from observations in other bats, approach calls of M. molossus are longer and of higher frequencies than search calls. Close to the roost, the call frequency is increased to 45.049.8 kHz and, in addition, extremely broadband signals are emitted. This demonstrates high plasticity of call design
0340-7594
allegro:1991-2014
10103699
Journal of Comparative Physiology a-Neuroethology Sensory Neural and Behavioral Physiology. - ISSN 0340-7594. - 190 (2004), 7, S. 561 - 574
Emanuel C. Mora
S. Macias
Marianne Vater
Frank Coro
Manfred Kossl
Institut für Biochemie und Biologie
Referiert
17470
2002
2002
eng
article
1
--
--
--
High-resolution three-dimensional imaging of the lateral plasma membrane of cochlear outer hair cells by atomic force microscopy
allegro:1991-2014
10095747
The Journal of Comparative Neurology. - 451 (2002), S. 62 - 69
Christian LeGrimellec
Marie-Cecile Giocondi
Marc Lenoir
Marianne Vater
Gerard Sposito
Remy Pujol
Institut für Biochemie und Biologie
19928
2000
2000
eng
article
1
--
--
--
Auditory brainstem processing in bats
3-527-27587- 8
allegro:1991-2014
10093166
Auditory worlds: sensory analysis and perception in animals and man : final report of the Collaborative Research Centre 204, "Nachrichtenaufnahme und -verarbeitung im Hörsystem von Vertebraten (Munich)", 1983 - 1997 / Deutsche Forschungsgemeinschaft. Ed. by Geoffrey A. Manley ... - Weinheim [u.a.] : Wiley-VCH, 2000. - ISBN 3-527-27587- 8. - S. 142 - 152
Marianne Vater
Institut für Biochemie und Biologie
18255
2001
2001
eng
article
1
--
--
--
Cellular and subcellular distribution of AMPA-type glutamate receptor subunits and metabotropic glutamate receptor 1alpha in the cochlear nucleus of the horseshoe bat (Rhinolophus rouxi).
0378-5955
allegro:1991-2014
10093156
Hearing research : an international journal. - ISSN 0378-5955. - 156 (2001), 1 - 2, S. 128 - 142
Michaela Kemmer
Marianne Vater
Institut für Biochemie und Biologie
19932
2000
2000
eng
article
1
--
--
--
Cochlear specializations in bats
3-527-27587-8
allegro:1991-2014
10093423
Auditory worlds: sensory analysis and perception in animals and man : final report of the Collaborative Research Centre 204, "Nachrichtenaufnahme und -verarbeitung im Hörsystem von Vertebraten (Munich)", 1983 - 1997 / Deutsche Forschungsgemeinschaft. Ed. by Geoffrey A. Manley ... Weinheim [u.a.] : Wiley-VCH, 2000. - ISBN 3-527-27587-8. - S. 60 - 69
Marianne Vater
Institut für Biochemie und Biologie
18254
2001
2001
eng
article
1
--
--
--
Functional organization of the dorsal cochlear nucleus of the horseshoe bat (Rhinolophus rouxi) studied by GABA and glycine immunocytochemistry and electron microscopy.
0340-2061
allegro:1991-2014
10093155
Anatomy and Embryology : Zeitschrift für Anatomie und Entwicklungsgeschichte. - ISSN 0340-2061. - 203 (2001) 6, S. 429 - 447
Michaela Kemmer
Marianne Vater
Institut für Biochemie und Biologie
19962
2000
2000
eng
article
1
--
--
--
Cochlear specializations in bats
3-527-27587-8
allegro:1991-2014
10093165
Auditory worlds : sensory analysis and perception in animals and man : final report of the Collaborative Research Centre 204 / Hrsg.: Geoffrey A. Manley ; H. Fastl ; M. Kössl ; H. Oeckinghaus ; G. Klump. - Weinheim : Wiley-VCH, 2000. - ISBN: 3-527-27587-8. - S. 60 - 69
Marianne Vater
Institut für Biochemie und Biologie
19897
2000
2000
eng
article
1
--
--
--
Consequences of outer hair cell damage for otoacoustic emissions and audiovocal feedback in the mustached bat
1525-3961
allegro:1991-2014
10093158
Journal of the Association Research Otolaryngology : JARO. - ISSN 1525-3961. - 1 (2000), 4, S. 300 - 314
Manfred Kössl
Marianne Vater
Institut für Biochemie und Biologie
18204
2001
2001
eng
article
1
--
--
--
Laminar analysis of inhibition in the gerbil primary auditory cortex.
1525-3961
allegro:1991-2014
10093157
Journal of the Association Research Otolaryngology : JARO. - ISSN 1525-3961. - 2 (2001), 3, S. 279 - 296
Elisabeth Foeller
Marianne Vater
Manfred Kössl
Institut für Biochemie und Biologie
20789
1999
1999
eng
article
1
--
--
--
Two-toned echolocation calls from Molossus molossus in Cuba.
0022-2372
allegro:1991-2014
10093159
Journal mammalogy. - ISSN 0022-2372. - 80 (1999), 3, S. 929 - 932
Manfred Kössl
Emanuel C. Mora
Frank Coro
Marianne Vater
Institut für Biochemie und Biologie
Institut für Biochemie und Molekulare Physiologie
19869
2000
2000
eng
article
1
--
--
--
Evolutionary plasticity and ontogeny of the bat cochlea.
0-521-62632-3
allegro:1991-2014
10093161
Ontogeny, functional ecology, and evolution of bats / ed. by Rick A. Adams ... - Cambridge [u. a.]: Cambridge Univ. Press, 2000. - ISBN 0-521-62632-3. - S. 137 - 174
Marianne Vater
Institut für Biochemie und Biologie
31528
2010
2010
eng
article
1
--
--
--
Postnatal maturation of primary auditory cortex in the mustached bat, pteronotus parnellii
The primary auditory cortex (AI) of adult Pteronotus parnellii features a foveal representation of the second harmonic constant frequency (CF2) echolocation call component. In the corresponding Doppler-shifted constant frequency (DSCF) area, the 61 kHz range is over-represented for extraction of frequency-shift information in CF2 echoes. To assess to which degree AI postnatal maturation depends on active echolocation or/and reflects ongoing cochlear maturation, cortical neurons were recorded in juveniles up to postnatal day P29, before the bats are capable of active foraging.At P1-2, neurons in posterior AI are tuned sensitively to low frequencies (22-45 dB SPL, 28-35 kHz). Within the prospective DSCF area, neurons had insensitive responses (>60 dB SPL) to frequencies <40 kHz and lacked sensitive tuning curve tips. Up to P10, when bats do not yet actively echolocate, tonotopy is further developed and DSCF neurons respond to frequencies of 51-57 kHz with maximum tuning sharpness (Q(10dB)) of 57. Between P11 and 20, the frequency representation in AI includes higher frequencies anterior and dorsal to the DSCF area. More multipeaked neurons (33%) are found than at older age. In the oldest group, DSCF neurons are tuned to frequencies close to 61 kHz with Q(10dB) values <= 212, and threshold sensitivity, tuning sharpness and cortical latencies are adult-like. The data show that basic aspects of cortical tonotopy are established before the bats actively echolocate. Maturation of tonotopy, increase of tuning sharpness, and upward shift in the characteristic frequency of DSCF neurons appear to strongly reflect cochlear maturation.
http://jn.physiology.org/
10.1152/jn.00517.2009
0022-3077
allegro:1991-2014
10107848
Journal of neurophysiology. - ISSN 0022-3077. - 103 (2010), 5, S. 2339 - 2354
Marianne Vater
Elisabeth Foeller
Emanuel C. Mora
Frank Coro
Ian J. Russell
Manfred Kössl
Institut für Biochemie und Biologie
Referiert
35418
2013
2013
eng
570
578
9
1
133
article
American Institute of Physics
Melville
1
--
--
--
Evolution of neuronal mechanisms for echolocation specializations for target-range computation in bats of the genus Pteronotus
Delay tuning was studied in the auditory cortex of Pteronotus quadridens. All the 136 delay-tuned units that were studied responded strongly to heteroharmonic pulse-echo pairs presented at specific delays. In the heteroharmonic pairs, the first sonar call harmonic marks the timing of pulse emission while one of the higher harmonics (second or third) indicates the timing of the echo. Delay-tuned units are organized chronotopically along a rostrocaudal axis according to their characteristic delay. There is no obvious indication of multiple cortical axes specialized in the processing of different harmonic combinations of pulse and echo. Results of this study serve for a straight comparison of cortical delay-tuning between P. quadridens and the well-studied mustached bat, Pteronotus parnellii. These two species stem from the most recent and most basal nodes in the Pteronotus lineage, respectively. P. quadridens and P. parnellii use comparable heteroharmonic target-range computation strategies even though they do not use biosonar calls of a similar design. P. quadridens uses short constant-frequency (CF)/frequency-modulated (FM) echolocation calls, while P. parnellii uses long CF/FM calls. The ability to perform "heteroharmonic" target-range computations might be an ancestral neuronal specialization of the genus Pteronotus that was subjected to positive Darwinian selection in the evolution.
The journal of the Acoustical Society of America
10.1121/1.4768794
0001-4966
wos:2011-2013
WOS:000313034700064
Hechavarria, JC (reprint author), Goethe Univ Frankfurt, Inst Cell Biol & Neurosci, D-60054 Frankfurt, Germany., julio.cesar@daad-alumni.de
German Academic Exchange Service (DAAD)
Julio C. Hechavarria
Silvio Macias
Marianne Vater
Emanuel C. Mora
Manfred Kössl
Institut für Biochemie und Biologie
Referiert
31699
2009
2009
eng
article
1
--
--
--
Interlaminar differences of intrinsic properties of pyramidal neurons in the auditory cortex of mice
Cortical information processing depends crucially upon intrinsic neuronal properties modulating a given synaptic input, in addition to integration of excitatory and inhibitory inputs. These intrinsic mechanisms are poorly understood in sensory cortex areas. We therefore investigated neuronal properties in slices of the auditory cortex (AC) of normal hearing mice using whole-cell patch-clamp recordings of pyramidal neurons in layers II/III, IV, V, and VI in the current- and voltage clamp mode. A total of 234 pyramidal neurons were included in the analysis revealing distinct laminar differences. Regular spiking (RS) neurons in layer II/III have significantly lower resting membrane potential, higher threshold for action potential generation, and larger K-ir and I-h amplitudes compared with layer V and VI RS neurons. These currents could improve temporal resolution in the upper layers of the AC. Additionally, the presence of a T-type Ca2+ current could be an important factor of RS neurons in these upper layers to amplify temporally closely correlated inputs. Compared with upper layers, lower layers (V and VI) exhibit a higher relative abundance of intrinsic bursting neurons. These neurons may provide layer-specific transfer functions for interlaminar, intercortical, and corticofugal information processing.
http://cercor.oxfordjournals.org/
10.1093/cercor/bhn143
1047-3211
allegro:1991-2014
10108036
Cerebral cortex. - ISSN 1047-3211. - 19 (2009), 5, S. 1008 - 1018
Stefan Huggenberger
Marianne Vater
Rudolf A. Deisz
Institut für Biochemie und Biologie
Referiert
34679
2013
2013
eng
11
10
4
article
Nature Publ. Group
London
1
--
--
--
Blurry topography for precise target-distance computations in the auditory cortex of echolocating bats
Echolocating bats use the time from biosonar pulse emission to the arrival of echo (defined as echo delay) to calculate the space depth of targets. In the dorsal auditory cortex of several species, neurons that encode increasing echo delays are organized rostrocaudally in a topographic arrangement defined as chronotopy. Precise chronotopy could be important for precise target-distance computations. Here we show that in the cortex of three echolocating bat species (Pteronotus quadridens, Pteronotus parnellii and Carollia perspicillata), chronotopy is not precise but blurry. In all three species, neurons throughout the chronotopic map are driven by short echo delays that indicate the presence of close targets and the robustness of map organization depends on the parameter of the receptive field used to characterize neuronal tuning. The timing of cortical responses (latency and duration) provides a binding code that could be important for assembling acoustic scenes using echo delay information from objects with different space depths.
Nature Communications
10.1038/ncomms3587
2041-1723
wos:2011-2013
2587
WOS:000326470400031
Hechavarria, JC (reprint author), Goethe Univ Frankfurt, Inst Cell Biol & Neurosci, D-60438 Frankfurt, Germany., julio.cesar@daad-alumni.de
German Academic Exchange Service (DAAD); Deutsches
Forschungsgemeinschaft (DFG)
Julio C. Hechavarria
Silvio Macias
Marianne Vater
Cornelia Voss
Emanuel C. Mora
Manfred Kossl
Institut für Biochemie und Biologie
Referiert
23968
1997
1997
eng
article
1
--
--
--
The columnar region of the ventral nucleus of the lateral lemniscus in the big brown bat (Eptesicus fuscus) : synaptic arrangements and structural correlates of feedforward inhibitory function
allegro:1991-2014
10093164
Cell and tissue research. - 289 (1997), 2, S. 223 - 233
Marianne Vater
Ellen Covey
John H. Casseday
Institut für Biochemie und Biologie
Institut für Biochemie und Molekulare Physiologie
23969
1997
1997
eng
article
1
--
--
--
Evolutionary plasticity of cochlear design in echolocating bats
981-02-2712-4
allegro:1991-2014
10093167
Proceedings of the International Symposium on Diversity in Auditory Mechanics, University of California, Berkeley, 24 - 28 June 1996 / eds. E. R. Lewis ... - Singapore [u. a.] : World Scientific, 1997. - ISBN 981-02-2712-4. S. 49 - 55
Marianne Vater
Institut für Biochemie und Biologie
Institut für Biochemie und Molekulare Physiologie
23946
1997
1997
eng
article
1
--
--
--
The postnatal development of F-actin in tension fibroblasts of the spiral ligament of the gerbil cochlea.
0378-5955
allegro:1991-2014
10093163
Hearing research : an international journal. - ISSN 0378-5955. - 108 (1997), 1/2, S. 180 - 190
Birgit Kuhn
Marianne Vater
Institut für Biochemie und Biologie
Institut für Biochemie und Molekulare Physiologie
22319
1998
1998
eng
article
1
--
--
--
Adaptation of the auditory periphery of bats for echolocation
1-56098-825-8
allegro:1991-2014
10093160
Bat : biology and conservation. / ed. by Thomas H. Kunz ... - Washington: Smithsonian Inst. Press, 1998. - ISBN 1-56098-825-8. - S. 231 - 247
Marianne Vater
Institut für Biochemie und Biologie
Institut für Biochemie und Molekulare Physiologie
23945
1997
1997
eng
article
1
--
--
--
The distribution of GABA and glycine immunostaining in the cochlear nucleus of the mustached bat (Pteronotus parnellii).
allegro:1991-2014
10093162
Cell and tissue research. - 287 (1997), 3, S. 487 - 506
Michaela Kemmer
Marianne Vater
Institut für Biochemie und Biologie
Institut für Biochemie und Molekulare Physiologie
36882
2011
2011
eng
605
613
9
5
197
article
Springer
New York
1
--
--
--
Comparison of properties of cortical echo delay-tuning in the short-tailed fruit bat and the mustached bat
Target-distance computation by cortical neurons sensitive to echo delay is an essential characteristic of the auditory system of insectivorous bats. To assess if functional requirements such as detection of small insects versus larger stationary surfaces of plants are reflected in cortical properties, we compare delay-tuned neurons in a frugivorous (C. perspicillata, CP) and an insectivorous (P. parnellii, PP) bat species that belong to related families within the superfamily of Noctilionoidea. The bandwidth and shape of delay-tuning curves and the range of characteristic delays are similar in both species and hence are not related to different echolocation strategies. Most units respond at 2-6 ms echo delay with most sensitive thresholds of 20-30 dB SPL. In CP, units tuned to delays > 12 ms are slightly more abundant and are more sensitive than in PP. All delay-tuned neurons in CP reliably respond to single pure-tone stimuli, whereas such responses are only observed in 49% of delay-tuned units in PP. The cortical representation of echo delay (chronotopy) covers a larger area in CP but is less precise than described in PP. Since chronotopy is absent in certain other insectivorous bat species, it is open if these differences in topography are related to echolocation behaviour.
Journal of comparative physiology : A, Neuroethology, sensory, neural, and behavioral physiology
10.1007/s00359-010-0530-8
0340-7594
wos:2011-2013
WOS:000289687900019
Kossl, M (reprint author), Goethe Univ Frankfurt, Inst Cell Biol & Neurosci, Siesmayerstr 70A, Frankfurt, Germany., koessl@bio.uni-frankfurt.de
DFG
Cornelia Hagemann
Marianne Vater
Manfred Koessl
eng
uncontrolled
Echolocation
eng
uncontrolled
Auditory cortex
eng
uncontrolled
Chronotopy
eng
uncontrolled
Carollia perspicillata
eng
uncontrolled
Pteronotus parnellii
Institut für Biochemie und Biologie
Referiert
39122
2015
2015
eng
518
532
15
5
41
article
Wiley-Blackwell
Hoboken
1
--
--
--
Bat auditory cortex - model for general mammalian auditory computation or special design solution for active time perception?
Audition in bats serves passive orientation, alerting functions and communication as it does in other vertebrates. In addition, bats have evolved echolocation for orientation and prey detection and capture. This put a selective pressure on the auditory system in regard to echolocation-relevant temporal computation and frequency analysis. The present review attempts to evaluate in which respect the processing modules of bat auditory cortex (AC) are a model for typical mammalian AC function or are designed for echolocation-unique purposes. We conclude that, while cortical area arrangement and cortical frequency processing does not deviate greatly from that of other mammals, the echo delay time-sensitive dorsal cortex regions contain special designs for very powerful time perception. Different bat species have either a unique chronotopic cortex topography or a distributed salt-and-pepper representation of echo delay. The two designs seem to enable similar behavioural performance.
European journal of neuroscience
10.1111/ejn.12801
25728173
0953-816X
1460-9568
wos:2015
WOS:000350647100002
Kossl, M (reprint author), Goethe Univ Frankfurt, Inst Cell Biol & Neurosci, Max von Laue Str 13, D-60438 Frankfurt, Germany., koessl@bio.uni-frankfurt.de
Manfred Kössl
Julio Hechavarria
Cornelia Voss
Markus Schaefer
Marianne Vater
eng
uncontrolled
chronotopy
eng
uncontrolled
echolocation
eng
uncontrolled
fovea
eng
uncontrolled
salt-and-pepper
eng
uncontrolled
target range
Institut für Biochemie und Biologie
Referiert
35981
2012
2012
eng
7
2
3
article
Nature Publ. Group
London
1
--
--
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Auditory cortex of newborn bats is prewired for echolocation
Neuronal computation of object distance from echo delay is an essential task that echolocating bats must master for spatial orientation and the capture of prey. In the dorsal auditory cortex of bats, neurons specifically respond to combinations of short frequency-modulated components of emitted call and delayed echo. These delay-tuned neurons are thought to serve in target range calculation. It is unknown whether neuronal correlates of active space perception are established by experience-dependent plasticity or by innate mechanisms. Here we demonstrate that in the first postnatal week, before onset of echolocation and flight, dorsal auditory cortex already contains functional circuits that calculate distance from the temporal separation of a simulated pulse and echo. This innate cortical implementation of a purely computational processing mechanism for sonar ranging should enhance survival of juvenile bats when they first engage in active echolocation behaviour and flight.
Nature Communications
10.1038/ncomms1782
2041-1723
wos:2011-2013
773
WOS:000303455200010
Voss, C (reprint author), Goethe Univ Frankfurt, Inst Cell Biol & Neurosci, D-60438 Frankfurt, Germany., hagemann@bio.uni-frankfurt.de
DFG [KO 987/10-1/2]
Manfred Kössl
Cornelia Voss
Emanuel C. Mora
Silvio Macias
Elisabeth Föller
Marianne Vater
Institut für Biochemie und Biologie
Referiert
38085
2014
2014
eng
68
75
8
24
article
Elsevier
London
1
--
--
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Neural maps for target range in the auditory cortex of echolocating bats
Computational brain maps as opposed to maps of receptor surfaces strongly reflect functional neuronal design principles. In echolocating bats, computational maps are established that topographically represent the distance of objects. These target range maps are derived from the temporal delay between emitted call and returning echo and constitute a regular representation of time (chronotopy). Basic features of these maps are innate, and in different bat species the map size and precision varies. An inherent advantage of target range maps is the implementation of mechanisms for lateral inhibition and excitatory feedback. Both can help to focus target ranging depending on the actual echolocation situation. However, these maps are not absolutely necessary for bat echolocation since there are bat species without cortical target-distance maps, which use alternative ensemble computation mechanisms.
Current opinion in neurobiology : reviews of all advances ; evaluation of key references ; comprehensive listing of papers
10.1016/j.conb.2013.08.016
24492081
0959-4388
1873-6882
wos:2014
WOS:000331509500012
Kossl, M (reprint author), Goethe Univ Frankfurt, Inst Cell Biol & Neurosci, Max von Laue Str 13, D-60439 Frankfurt, Germany., koessl@bio.uni-frankfurt.de
M. Koessl
J. C. Hechavarria
C. Voss
S. Macias
E. C. Mora
Marianne Vater
Institut für Biochemie und Biologie
Referiert
61003
2020
2020
eng
453
466
14
3
206
article
Springer
Berlin ; Heidelberg
1
2020-02-28
2020-02-28
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Ontogeny of electric organ and electric organ discharge in Campylomormyrus rhynchophorus (Teleostei: Mormyridae)
The aim of this study was a longitudinal description of the ontogeny of the adult electric organ of Campylomormyrus rhynchophorus which produces as adult an electric organ discharge of very long duration (ca. 25 ms). We could indeed show (for the first time in a mormyrid fish) that the electric organ discharge which is first produced early during ontogeny in 33-mm-long juveniles is much shorter in duration and has a different shape than the electric organ discharge in 15-cm-long adults. The change from this juvenile electric organ discharges into the adult electric organ discharge takes at least a year. The increase in electric organ discharge duration could be causally linked to the development of surface evaginations, papillae, at the rostral face of the electrocyte which are recognizable for the first time in 65-mm-long juveniles and are most prominent at the periphery of the electrocyte.
Journal of comparative physiology; A, Neuroethology, sensory, neural, and behavioral physiology
10.1007/s00359-020-01411-z
32112119
0340-7594
1432-1351
outputup:dataSource:WoS:2020
WOS:000517003100001
Kirschbaum, F (corresponding author), Humboldt Univ, Fac Life Sci, Unit Biol & Ecol Fishes, Philippstr 13,Haus 16, D-10115 Berlin, Germany., frank.kirschbaum@staff.hu-berlin.de
University of Potsdam; Leibniz-SAW project GENART
Kirschbaum, Frank
2023-10-05T07:57:36+00:00
sword
importub
filename=package.tar
3d8bd03c1f29d0d2006270d2181c83a4
1459295-2
231244-X
false
true
CC-BY - Namensnennung 4.0 International
Manh Duy Linh Nguyen
Victor Mamonekene
Marianne Vater
Peter Bartsch
Ralph Tiedemann
Frank Kirschbaum
eng
uncontrolled
Weakly electric fish
eng
uncontrolled
Development
eng
uncontrolled
Electric organ discharge
eng
uncontrolled
Electric
eng
uncontrolled
organ
eng
uncontrolled
Electrocyte features
Biowissenschaften; Biologie
Tiere (Zoologie)
Institut für Biochemie und Biologie
Referiert
Import
Hybrid Open-Access
60096
2021
2021
eng
773
773
1
6
207
article
Springer
Heidelberg
1
2021-10-17
2021-07-24
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Correction to: Intragenus F1-hybrids of African weakly electric fish (Mormyridae: Campylomormyrus tamandua male x C. compressirostris female) are fertile (vol 206, pg 571, 2020)
Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology
10.1007/s00359-021-01513-2
34657165
0340-7594
1432-1351
outputup:dataSource:PubMed:2021
WOS:000708220600001
Kirschbaum, F (corresponding author), Humboldt Univ, Albrecht Daniel Thaer Inst Agr & Hort Sci, Fac Life Sci, Unit Biol & Ecol Fishes, Philippstr 13,Haus 16, D-10115 Berlin, Germany., frank.kirschbaum@staff.hu-berlin.de
2023-07-24T12:13:10+00:00
sword
importub
filename=package.tar
377b678e6e5a1c70bed31b89f23ac82a
1459295-2
231244-X
Kirschbaum, Frank
Originalartikel: https://doi.org/10.1007/s00359-020-01425-7
false
true
CC-BY - Namensnennung 4.0 International
Yevheniia Korniienko
Linh Nguyen
Stephanie Baumgartner
Marianne Vater
Ralph Tiedemann
Frank Kirschbaum
Medizin und Gesundheit
Institut für Biochemie und Biologie
Referiert
Import