The Bernstein Center for Computational Neuroscience Freiburg


Announcement for the next
Informal Seminar
Dr. Tim Gollisch
Harvard University
Biolabs
Cambridge, USA
SPIKE TIMING AND TEMPORAL SENSITIVITY IN SENSORY SYSTEMS

Monday, May 15th, 2006
10:15h
Library room(1st floor)
BCCN building
Hansastraße 9A
79104 Freiburg
Abstract:
Spike timing has received increasing attention in the investigation of sensory systems as a powerful possibility for encoding the natural environment. In order to better understand the role of spike timing in the encoding process, analyses of the stimulus aspects that affect spike timing and quantitative assessments of the temporal sensitivity and precision of neurons in sensory systems are required. For example, neuronal receptive fields measured with commonly used reverse-correlation techniques can be distorted by spike jitter or other spike-timing dynamics. Here, I will present an extension of reverse correlation that allows us to distinguish the temporal integration of the sensory stimulus from mechanisms that shape spike timing and precision. As will be shown in examples from the auditory and visual periphery, this yields improved estimates of receptive fields as well as quantitative models of spike timing. These findings suggest and constrain potential coding schemes in these systems.
The talk is open to the public. Guests are cordially invited!
www.bccn.uni-freiburg.de