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SUMMARY:Investigating rhythmic expectation using sound lateralization and 
 auditory averaging tasks - David Greatrex\, University of Cambridge 
DTSTART:20160301T170000Z
DTEND:20160301T183000Z
UID:TALK63261@talks.cam.ac.uk
CONTACT:Gabriela Pavarini
DESCRIPTION:     Attempts to understand the degree to which predictive inf
 ormation in the temporal structure of events helps to optimise perception 
 have increased over the past two decades. Experiments have shown that rhyt
 hmically predictable events are easier to detect\, respond to and memorise
  (Nobre & Rohenkohl\, 2014 for review). Whilst this work has facilitated t
 he development of widely adopted theoretical models describing how rhythmi
 c expectation gaits sensory information\, the underlying data remains limi
 ted to a small number of experimental contexts and levels. This restraint 
 limits the generalisability of past findings\, making it unclear as to how
  near or far-reaching the perceptual benefits associated with rhythmic exp
 ectation go.\n    In this talk I discuss how rhythmic expectation shapes p
 erception and rapid (‘online’) perceptual decision-making and present 
 my own attempts to expand the investigation beyond that of single target p
 sychophysics. I start with two observations: Firstly\, that many everyday 
 decisions require tracking and averaging information associated with multi
 ple events over time. Secondly\, that timing is not often determined by an
  unrelated rhythmic pulse preceding an isolated event (as used in previous
  experiments)\, but is instead inherent within and between the different s
 ources of information being used to make a decision. I then present data f
 rom two sound lateralization experiments that account for these observatio
 ns and test the degree to which the rhythmic presentation of events biases
  auditory averaging decisions. The talk concludes with theoretical suggest
 ions based on the findings and addresses the benefits and pitfalls of deve
 loping a new experimental paradigm in the field.\n
LOCATION:Lecture Room 1\, Faculty of Music\, 11 West Road\, CB3 9DP
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