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SUMMARY:Neural entrainment to higher-level features of speech reflects the
  discrete nature of perception in the auditory system - Benedikt Zoefel\, 
 Centre de Recherche Cerveau et Cognition (CerCo)\, CNRS\, Toulouse\, Franc
 e
DTSTART:20150922T110000Z
DTEND:20150922T123000Z
UID:TALK60672@talks.cam.ac.uk
CONTACT:31214
DESCRIPTION:Recent research suggests that the visual system does not conti
 nuously monitor the environment\, but rather samples it\, cycling between 
 'snapshots' at discrete moments in time. Interestingly\, most attempts at 
 discovering analogous mechanisms in the auditory system failed\, indicatin
 g crucial differences between the visual and auditory system. In this talk
 \, I will hypothesize why this could be the case and present data that kee
 p alive the idea of discrete stimulus processing in the auditory system: F
 irstly\, I show that auditory recognition is clearly more robust to subsam
 pling on a higher level of auditory representation than when subsampling i
 s applied to the very input to the system. Secondly\, I present evidence t
 hat neural oscillations\, *the* subsampling tool for the brain\, do not on
 ly passively follow the rhythmic changes in spectral content of speech sou
 nd - rather\, they actively adjust to higher-level features of speech\, an
 d this adjustment has perceptual consequences. These findings suggest that
 \, if discrete sampling exists in the auditory system\, it should operate 
 on a higher level of auditory processing\, and potentially in a flexible f
 ashion.
LOCATION:Lecture Theatre\, MRC- CBU\, Chaucer Rd.
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