Auditory cortex accesses phonological categories: an MEG mismatch study. Export

@article{citeulike:469475, abstract = {The studies presented here use an adapted oddball paradigm to show evidence that representations of discrete phonological categories are available to the human auditory cortex. Brain activity was recorded using a 37-channel biomagnetometer while eight subjects listened passively to synthetic speech sounds. In the phonological condition, which contrasted stimuli from an acoustic /dae/-/tae/ continuum, a magnetic mismatch field (MMF) was elicited in a sequence of stimuli in which phonological categories occurred in a many-to-one ratio, but no acoustic many-to-one ratio was present. In order to isolate the contribution of phonological categories to the MMF responses, the acoustic parameter of voice onset time, which distinguished standard and deviant stimuli, was also varied within the standard and deviant categories. No MMF was elicited in the acoustic condition, in which the acoustic distribution of stimuli was identical to the first experiment, but the many-to-one distribution of phonological categories was removed. The design of these studies makes it possible to demonstrate the all-or-nothing property of phonological category membership. This approach contrasts with a number of previous studies of phonetic perception using the mismatch paradigm, which have demonstrated the graded property of enhanced acoustic discrimination at or near phonetic category boundaries.}, address = {University of Delaware. colin@glue.umd.edu}, author = {Phillips, C. and Pellathy, T. and Marantz, A. and Yellin, E. and Wexler, K. and Poeppel, D. and McGinnis, M. and Roberts, T.}, citeulike-article-id = {469475}, citeulike-linkout-0 = {http://jocn.mitpress.org/cgi/content/abstract/12/6/1038}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/11177423}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=11177423}, issn = {0898-929X}, journal = {J Cogn Neurosci}, keywords = {categoricalperception, meg, mmf, phonetics, phonology, vot}, month = {November}, number = {6}, pages = {1038--1055}, posted-at = {2006-01-18 17:08:44}, priority = {0}, title = {Auditory cortex accesses phonological categories: an MEG mismatch study.}, url = {http://jocn.mitpress.org/cgi/content/abstract/12/6/1038}, volume = {12}, year = {2000} }

TY - JOUR ID - citeulike:469475 L3 - citeulike-article-id:469475 N2 - The studies presented here use an adapted oddball paradigm to show evidence that representations of discrete phonological categories are available to the human auditory cortex. Brain activity was recorded using a 37-channel biomagnetometer while eight subjects listened passively to synthetic speech sounds. In the phonological condition, which contrasted stimuli from an acoustic /dae/-/tae/ continuum, a magnetic mismatch field (MMF) was elicited in a sequence of stimuli in which phonological categories occurred in a many-to-one ratio, but no acoustic many-to-one ratio was present. In order to isolate the contribution of phonological categories to the MMF responses, the acoustic parameter of voice onset time, which distinguished standard and deviant stimuli, was also varied within the standard and deviant categories. No MMF was elicited in the acoustic condition, in which the acoustic distribution of stimuli was identical to the first experiment, but the many-to-one distribution of phonological categories was removed. The design of these studies makes it possible to demonstrate the all-or-nothing property of phonological category membership. This approach contrasts with a number of previous studies of phonetic perception using the mismatch paradigm, which have demonstrated the graded property of enhanced acoustic discrimination at or near phonetic category boundaries. IS - 6 JF - J Cogn Neurosci SN - 0898-929X AD - University of Delaware. colin@glue.umd.edu EP - 1055 TI - Auditory cortex accesses phonological categories: an MEG mismatch study. VL - 12 SP - 1038 KW - categoricalperception KW - meg KW - mmf KW - phonetics KW - phonology KW - vot AU - Phillips, C AU - Pellathy, T AU - Marantz, A AU - Yellin, E AU - Wexler, K AU - Poeppel, D AU - McGinnis, M AU - Roberts, T PY - 2000/11// UR - http://jocn.mitpress.org/cgi/content/abstract/12/6/1038 ER -