TY - JOUR A1 - Creet, Ella A1 - Morris, Julie A1 - Howard, David A1 - Nickels, Lyndsey T1 - Name it again! investigating the effects of repeated naming attempts in aphasia JF - Aphasiology : an international, interdisciplinary journal KW - Aphasia KW - word retrieval KW - naming KW - repeated naming KW - priming Y1 - 2019 U6 - https://doi.org/10.1080/02687038.2019.1622352 SN - 0268-7038 SN - 1464-5041 VL - 33 IS - 10 SP - 1202 EP - 1226 PB - Routledge, Taylor & Francis Group CY - Abingdon ER - TY - JOUR A1 - Arantzeta, Miren A1 - Webster, Janet A1 - Laka, Itziar A1 - Martinez-Zabaleta, Maite A1 - Howard, David T1 - What happens when they think they are right? BT - Error awareness analysis of sentence comprehension deficits in aphasia JF - Aphasiology : an international, interdisciplinary journal N2 - Background: Comprehension of non-canonical sentences is frequently characterised by chance level performance in people with aphasia (PWA). Chance level performance has been interpreted as guessing, but online data does not support this rendering. It is still not clear whether the incorrect sentence processing is guided by the compensatory strategies that PWA might employ to overcome linguistic difficulties.Aims: We aim to study to what extent people with non-fluent aphasia are aware of their sentence comprehension deficits.Methods & Procedures: This study combined offline and online data to investigate the effect of word order and error-awareness on sentence comprehension in a group of PWA and non-brain damaged (NBD) participants. The offline tasks involved auditory sentence picture-matching immediately followed by a confidence rating (CR). Participants were asked to judge the perceived correctness of their previous answer. Online data consisted of eye-tracking.Outcomes & Results: Replicating previous findings, PWA had significantly worse comprehension of Theme-Agent order compared to Agent-Theme order sentences. Controls showed ceiling level sentence comprehension. CR was a poor predictor of response accuracy in PWA, but moderate-good in NBD. A total of 6.8% of judgements were classified as guessing by PWA. Post hoc gaze data analysis indicated that CR was a predictor of the fixation pattern during the presentation of the linguistic stimuli.Conclusions: Results suggest that PWA were mostly unaware of their sentence comprehension errors and did not consciously employ strategies to compensate for their difficulties. KW - Aphasia KW - sentence comprehension KW - error awareness KW - eye-tracking KW - anosognosia Y1 - 2018 U6 - https://doi.org/10.1080/02687038.2017.1423270 SN - 0268-7038 SN - 1464-5041 VL - 32 IS - 12 SP - 1418 EP - 1444 PB - Routledge, Taylor & Francis Group CY - Abingdon ER - TY - JOUR A1 - Fyndanis, Valantis A1 - Lind, Marianne A1 - Varlokosta, Spyridoula A1 - Kambanaros, Maria A1 - Soroli, Efstathia A1 - Ceder, Klaudia A1 - Grohmann, Kleanthes K. A1 - Rofes, Adrià A1 - Simonsen, Hanne Gram A1 - Bjekić, Jovana A1 - Gavarró, Anna A1 - Kraljević, Jelena Kuvač A1 - Martínez-Ferreiro, Silvia A1 - Munarriz, Amaia A1 - Pourquie, Marie A1 - Vuksanović, Jasmina A1 - Zakariás, Lilla A1 - Howard, David T1 - Cross-linguistic adaptations of The Comprehensive Aphasia Test BT - challenges and solutions JF - Clinical linguistics & phonetics N2 - Comparative research on aphasia and aphasia rehabilitation is challenged by the lack of comparable assessment tools across different languages. In English, a large array of tools is available, while in most other languages, the selection is more limited. Importantly, assessment tools are often simple translations and do not take into consideration specific linguistic and psycholinguistic parameters of the target languages. As a first step in meeting the needs for comparable assessment tools, the Comprehensive Aphasia Test is currently being adapted into a number of languages spoken in Europe. In this article, some key challenges encountered in the adaptation process and the solutions to ensure that the resulting assessment tools are linguistically and culturally equivalent, are proposed. Specifically, we focus on challenges and solutions related to the use of imageability, frequency, word length, spelling-to-sound regularity and sentence length and complexity as underlying properties in the selection of the testing material. KW - Aphasia KW - assessment KW - Comprehensive Aphasia Test (CAT) KW - cross-linguistic adaptations KW - outcome measures Y1 - 2017 U6 - https://doi.org/10.1080/02699206.2017.1310299 SN - 0269-9206 SN - 1464-5076 VL - 31 IS - 7-9 SP - 697 EP - 710 PB - Taylor & Francis Group CY - Philadelphia ER - TY - JOUR A1 - Yue, Jinxing A1 - Alter, Kai-Uwe A1 - Howard, David A1 - Bastiaanse, Roelien T1 - Early access to lexical-level phonological representations of Mandarin word-forms BT - evidence from auditory N1 habituation JF - Language, cognition and neuroscience N2 - An auditory habituation design was used to investigate whether lexical-level phonological representations in the brain can be rapidly accessed after the onset of a spoken word. We studied the N1 component of the auditory event-related electrical potential, and measured the amplitude decrements of N1 associated with the repetition of a monosyllabic tone word and an acoustically similar pseudo-word in Mandarin Chinese. Effects related to the contrastive onset consonants were controlled for by introducing two control words. We show that repeated pseudo-words consistently elicit greater amplitude decrements in N1 than real words. Furthermore, this lexicality effect is free from sensory fatigue or rapid learning of the pseudo-word. These results suggest that a lexical-level phonological representation of a spoken word can be accessed as early as 110ms after the onset of the word-form. KW - Auditory N1 KW - short-term habituation KW - spoken word KW - Mandarin Chinese KW - language KW - event-related potential KW - lexical access Y1 - 2017 U6 - https://doi.org/10.1080/23273798.2017.1290261 SN - 2327-3798 SN - 2327-3801 VL - 32 IS - 9 SP - 1148 EP - 1163 PB - Routledge, Taylor & Francis Group CY - Abingdon ER - TY - JOUR A1 - Rofes, Adria A1 - Zakarias, Lilla A1 - Ceder, Klaudia A1 - Lind, Marianne A1 - Johansson, Monica Blom A1 - de Aguiar, Vania A1 - Bjekic, Jovana A1 - Fyndanis, Valantis A1 - Gavarro, Anna A1 - Simonsen, Hanne Gram A1 - Hernandez Sacristan, Carlos A1 - Kambanaros, Maria A1 - Kraljevic, Jelena Kuva A1 - Martinez-Ferreiro, Silvia A1 - Mavis, Ilknur A1 - Mendez Orellana, Carolina A1 - Sor, Ingrid A1 - Lukacs, Agnes A1 - Tuncer, Muge A1 - Vuksanovic, Jasmina A1 - Munarriz Ibarrola, Amaia A1 - Pourquie, Marie A1 - Varlokosta, Spyridoula A1 - Howard, David T1 - Imageability ratings across languages JF - Behavior research methods : a journal of the Psychonomic Society N2 - Imageability is a psycholinguistic variable that indicates how well a word gives rise to a mental image or sensory experience. Imageability ratings are used extensively in psycholinguistic, neuropsychological, and aphasiological studies. However, little formal knowledge exists about whether and how these ratings are associated between and within languages. Fifteen imageability databases were cross-correlated using nonparametric statistics. Some of these corresponded to unpublished data collected within a European research network-the Collaboration of Aphasia Trialists (COST IS1208). All but four of the correlations were significant. The average strength of the correlations (rho = .68) and the variance explained (R (2) = 46%) were moderate. This implies that factors other than imageability may explain 54% of the results. Imageability ratings often correlate across languages. Different possibly interacting factors may explain the moderate strength and variance explained in the correlations: (1) linguistic and cultural factors; (2) intrinsic differences between the databases; (3) range effects; (4) small numbers of words in each database, equivalent words, and participants; and (5) mean age of the participants. The results suggest that imageability ratings may be used cross-linguistically. However, further understanding of the factors explaining the variance in the correlations will be needed before research and practical recommendations can be made. KW - Imageability KW - Linguistics KW - Cross-linguistic KW - Correlations Y1 - 2018 U6 - https://doi.org/10.3758/s13428-017-0936-0 SN - 1554-351X SN - 1554-3528 VL - 50 IS - 3 SP - 1187 EP - 1197 PB - Springer CY - New York ER - TY - JOUR A1 - Cockell, Charles S. A1 - Voytek, Mary A. A1 - Gronstal, Aaron L. A1 - Finster, Kai A1 - Kirshtein, Julie D. A1 - Howard, Kieren A1 - Reitner, Joachim A1 - Gohn, Gregory S. A1 - Sanford, Ward E. A1 - Horton, J. Wright A1 - Kallmeyer, Jens A1 - Kelly, Laura A1 - Powars, David S. T1 - Impact disruption and recovery of the deep subsurface biosphere JF - Astrobiology N2 - Although a large fraction of the world's biomass resides in the subsurface, there has been no study of the effects of catastrophic disturbance on the deep biosphere and the rate of its subsequent recovery. We carried out an investigation of the microbiology of a 1.76 km drill core obtained from the similar to 35 million-year-old Chesapeake Bay impact structure, USA, with robust contamination control. Microbial enumerations displayed a logarithmic downward decline, but the different gradient, when compared to previously studied sites, and the scatter of the data are consistent with a rnicrobiota influenced by the geological disturbances caused by the impact. Microbial abundance is low in buried crater-fill, ocean-resurge, and avalanche deposits despite the presence of redox couples for growth. Coupled with the low hydraulic conductivity, the data suggest the microbial community has not yet recovered from the impact similar to 35 million years ago. Microbial enumerations, molecular analysis of microbial enrichment cultures, and geochemical analysis showed recolonization of a deep region of impact-fractured rock that was heated to above the upper temperature limit for life at the time of impact. These results show how, by fracturing subsurface rocks, impacts can extend the depth of the biosphere. This phenomenon would have provided deep refugia for life on the more heavily bombarded early Earth, and it shows that the deeply fractured regions of impact craters are promising targets to study the past and present habitability of Mars. KW - Asteroid KW - Impacts KW - Subsurface biosphere KW - Subterranean environment KW - Geobiology Y1 - 2012 U6 - https://doi.org/10.1089/ast.2011.0722 SN - 1531-1074 VL - 12 IS - 3 SP - 231 EP - 246 PB - Liebert CY - New Rochelle ER - TY - JOUR A1 - Howard, Joshua A1 - Granacher, Urs A1 - Behm, David George T1 - Trunk extensor fatigue decreases jump height similarly under stable and unstable conditions with experienced jumpers JF - European journal of applied physiology N2 - The purpose of this study was to investigate the effects of back extensor fatigue on performance measures and electromyographic (EMG) activity of leg and trunk muscles during jumping on stable and unstable surfaces. Before and after a modified Biering-Sorensen fatigue protocol for the back extensors, countermovement (CMJ) and lateral jumps (LJ) were performed on a force plate under stable and unstable (balance pad on the force plate) conditions. Performance measures for LJ (contact time) and CMJ height and leg and trunk muscles EMG activity were tested in 14 male experienced jumpers during 2 time intervals for CMJ (braking phase, push-off phase) and 5 intervals for LJ (-30 to 0, 0-30, 30-60, 60-90, and 90-120 ms) in non-fatigued and fatigued conditions. A significant main effect of test (fatigue) (p = 0.007, f = 0.57) was observed for CMJ height. EMG analysis showed a significant fatigue-induced decrease in biceps femoris and gastrocnemius activity with CMJ (p = 0.008, f = 0.58 andp = 0.04, f = 0.422, respectively). LJ contact time was not affected by fatigue or surface interaction. EMG activity was significantly lower in the tibialis anterior with LJ following fatigue (p = 0.05, f = 0.405). A test x surface (p = 0.04, f = 0.438) interaction revealed that the non-fatigued unstable CMJ gastrocnemius EMG activity was lower than the non-fatigued stable condition during the onset-of-force phase. The findings revealed that fatiguing the trunk negatively impacts CMJ height and muscle activity during the performance of CMJs. However, skilled jumpers are not additionally affected by a moderately unstable surface as compared to a stable surface. KW - Countermovement jump KW - Instability KW - Balance KW - Crossover fatigue KW - Lateral jumps Y1 - 2015 U6 - https://doi.org/10.1007/s00421-014-3011-x SN - 1439-6319 SN - 1439-6327 VL - 115 IS - 2 SP - 285 EP - 294 PB - Springer CY - New York ER -