@article{D'AgostiniBurgerFranssenetal.2021, author = {D'Agostini, Martina and Burger, Andreas M. and Franssen, Mathijs and Claes, Nathalie and Weymar, Mathias and Leupoldt, Andreas von and Van Diest, Ilse}, title = {Effects of transcutaneous auricular vagus nerve stimulation on reversal learning, tonic pupil size, salivary alpha-amylase, and cortisol}, series = {Psychophysiology : journal of the Society for Psychophysiological Research}, volume = {58}, journal = {Psychophysiology : journal of the Society for Psychophysiological Research}, number = {10}, publisher = {Wiley-Blackwell}, address = {Malden, Mass. [u.a.]}, issn = {1469-8986}, doi = {10.1111/psyp.13885}, pages = {20}, year = {2021}, abstract = {This study investigated whether transcutaneous auricular vagus nerve stimulation (taVNS) enhances reversal learning and augments noradrenergic biomarkers (i.e., pupil size, cortisol, and salivary alpha-amylase [sAA]). We also explored the effect of taVNS on respiratory rate and cardiac vagal activity (CVA). Seventy-one participants received stimulation of either the cymba concha (taVNS) or the earlobe (sham) of the left ear. After learning a series of cue-outcome associations, the stimulation was applied before and throughout a reversal phase in which cue-outcome associations were changed for some (reversal), but not for other (distractor) cues. Tonic pupil size, salivary cortisol, sAA, respiratory rate, and CVA were assessed at different time points. Contrary to our hypothesis, taVNS was not associated with an overall improvement in performance on the reversal task. Compared to sham, the taVNS group performed worse for distractor than reversal cues. taVNS did not increase tonic pupil size and sAA. Only post hoc analyses indicated that the cortisol decline was steeper in the sham compared to the taVNS group. Exploratory analyses showed that taVNS decreased respiratory rate but did not affect CVA. The weak and unexpected effects found in this study might relate to the lack of parameters optimization for taVNS and invite to further investigate the effect of taVNS on cortisol and respiratory rate.}, language = {en} } @article{FernandezHoehleBrocketal.2018, author = {Fernandez, Leigh and H{\"o}hle, Barbara and Brock, Jon and Nickels, Lyndsey}, title = {Investigating auditory processing of syntactic gaps with L2 speakers using pupillometry}, series = {Second language research}, volume = {34}, journal = {Second language research}, number = {2}, publisher = {Sage Publ.}, address = {London}, issn = {0267-6583}, doi = {10.1177/0267658317722386}, pages = {201 -- 227}, year = {2018}, abstract = {According to the Shallow Structure Hypothesis (SSH), second language (L2) speakers, unlike native speakers, build shallow syntactic representations during sentence processing. In order to test the SSH, this study investigated the processing of a syntactic movement in both native speakers of English and proficient late L2 speakers of English using pupillometry to measure processing cost. Of particular interest were constructions where movement resulted in an intermediate gap between clauses. Pupil diameter was recorded during auditory presentation of complex syntactic constructions. Two factors were manipulated: syntactic movement (such that some conditions contained movement while others did not), as well as syntactic movement type (either causing an intermediate gap or not). Grammaticality judgments revealed no differences between the two groups, suggesting both were capable of comprehending these constructions. Pupil change slope measurements revealed a potential sensitivity to intermediate gaps for only native speakers, however, both native and late L2 speakers showed similar facilitation during processing of the second gap site. Acoustic analysis revealed potential acoustic cues that may have facilitated the processing of these constructions. This suggests that, contrary to the predictions of the SSH, late L2 speakers are capable of constructing rich syntactic representations during the processing of intermediate gap constructions in spoken language.}, language = {en} } @article{TamasiMckeanGafosetal.2018, author = {Tamasi, Katalin and Mckean, Cristina and Gafos, Adamantios I. and H{\"o}hle, Barbara}, title = {Children's gradient sensitivity to phonological mismatch}, series = {Journal of child language}, volume = {46}, journal = {Journal of child language}, number = {1}, publisher = {Cambridge Univ. Press}, address = {New York}, issn = {0305-0009}, doi = {10.1017/S0305000918000259}, pages = {1 -- 23}, year = {2018}, abstract = {In a preferential looking paradigm, we studied how children's looking behavior and pupillary response were modulated by the degree of phonological mismatch between the correct label of a target referent and its manipulated form. We manipulated degree of mismatch by introducing one or more featural changes to the target label. Both looking behavior and pupillary response were sensitive to degree of mismatch, corroborating previous studies that found differential responses in one or the other measure. Using time-course analyses, we present for the first time results demonstrating full separability among conditions (detecting difference not only between one vs. more, but also between two and three featural changes). Furthermore, the correct labels and small featural changes were associated with stable target preference, while large featural changes were associated with oscillating looking behavior, suggesting significant shifts in looking preference over time. These findings further support and extend the notion that early words are represented in great detail, containing subphonemic information.}, language = {en} } @phdthesis{Tamasi2016, author = {Tamasi, Katalin}, title = {Measuring children's sensitivity to phonological detail using eye tracking and pupillometry}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-395954}, school = {Universit{\"a}t Potsdam}, pages = {xiv, 165}, year = {2016}, abstract = {Infants' lexical processing is modulated by featural manipulations made to words, suggesting that early lexical representations are sufficiently specified to establish a match with the corresponding label. However, the precise degree of detail in early words requires further investigation due to equivocal findings. We studied this question by assessing children's sensitivity to the degree of featural manipulation (Chapters 2 and 3), and sensitivity to the featural makeup of homorganic and heterorganic consonant clusters (Chapter 4). Gradient sensitivity on the one hand and sensitivity to homorganicity on the other hand would suggest that lexical processing makes use of sub-phonemic information, which in turn would indicate that early words contain sub-phonemic detail. The studies presented in this thesis assess children's sensitivity to sub-phonemic detail using minimally demanding online paradigms suitable for infants: single-picture pupillometry and intermodal preferential looking. Such paradigms have the potential to uncover lexical knowledge that may be masked otherwise due to cognitive limitations. The study reported in Chapter 2 obtained a differential response in pupil dilation to the degree of featural manipulation, a result consistent with gradient sensitivity. The study reported in Chapter 3 obtained a differential response in proportion of looking time and pupil dilation to the degree of featural manipulation, a result again consistent with gradient sensitivity. The study reported in Chapter 4 obtained a differential response to the manipulation of homorganic and heterorganic consonant clusters, a result consistent with sensitivity to homorganicity. These results suggest that infants' lexical representations are not only specific, but also detailed to the extent that they contain sub-phonemic information.}, language = {en} } @phdthesis{BreakellFernandez2016, author = {Breakell Fernandez, Leigh}, title = {Investigating word order processing using pupillometry and event-related potentials}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-91438}, school = {Universit{\"a}t Potsdam}, pages = {x, 122}, year = {2016}, abstract = {In this thesis sentence processing was investigated using a psychophysiological measure known as pupillometry as well as Event-Related Potentials (ERP). The scope of the the- sis was broad, investigating the processing of several different movement constructions with native speakers of English and second language learners of English, as well as word order and case marking in German speaking adults and children. Pupillometry and ERP allowed us to test competing linguistic theories and use novel methodologies to investigate the processing of word order. In doing so we also aimed to establish pupillometry as an effective way to investigate the processing of word order thus broadening the methodological spectrum.}, language = {en} }