TY - JOUR
T1 - Categorical processing of fast temporal sequences in the guinea pig auditory brainstem
AU - Burghard, Alice
AU - Voigt, Mathias Benjamin
AU - Kral, Andrej
AU - Hubka, Peter
N1 - Copyright the Author(s) 2019. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
PY - 2019/7/19
Y1 - 2019/7/19
N2 - Discrimination of temporal sequences is crucial for auditory object recognition, phoneme categorization and speech understanding. The present study shows that auditory brainstem responses (ABR) to pairs of noise bursts separated by a short gap can be classified into two distinct groups based on the ratio of gap duration to initial noise burst duration in guinea pigs. If this ratio was smaller than 0.5, the ABR to the trailing noise burst was strongly suppressed. On the other hand, if the initial noise burst duration was short compared to the gap duration (a ratio greater than 0.5), a release from suppression and/or enhancement of the trailing ABR was observed. Consequently, initial noise bursts of shorter duration caused a faster transition between response classes than initial noise bursts of longer duration. We propose that the described findings represent a neural correlate of subcortical categorical preprocessing of temporal sequences in the auditory system.
AB - Discrimination of temporal sequences is crucial for auditory object recognition, phoneme categorization and speech understanding. The present study shows that auditory brainstem responses (ABR) to pairs of noise bursts separated by a short gap can be classified into two distinct groups based on the ratio of gap duration to initial noise burst duration in guinea pigs. If this ratio was smaller than 0.5, the ABR to the trailing noise burst was strongly suppressed. On the other hand, if the initial noise burst duration was short compared to the gap duration (a ratio greater than 0.5), a release from suppression and/or enhancement of the trailing ABR was observed. Consequently, initial noise bursts of shorter duration caused a faster transition between response classes than initial noise bursts of longer duration. We propose that the described findings represent a neural correlate of subcortical categorical preprocessing of temporal sequences in the auditory system.
UR - http://www.scopus.com/inward/record.url?scp=85071152252&partnerID=8YFLogxK
U2 - 10.1038/s42003-019-0472-9
DO - 10.1038/s42003-019-0472-9
M3 - Article
C2 - 31341964
AN - SCOPUS:85071152252
VL - 2
SP - 1
EP - 9
JO - Communications Biology
JF - Communications Biology
SN - 2399-3642
IS - 1
M1 - 265
ER -