Title
Tuning neurons to interaural intensity differences using spike timing-dependent plasticity Tuning neurons to interaural intensity differences using spike timing-dependent plasticity
Author
Faculty/Department
Faculty of Applied Economics
Faculty of Sciences. Mathematics and Computer Science
Publication type
conferenceObject
Publication
Canakkale , [*]
Subject
Engineering sciences. Technology
Computer. Automation
Source (book)
Proceedings of World Academy of Science Engineering and Technology, April 25-27, 2007, Barcelona, Spain
ISSN
1307-6884
ISI
000260497000004
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
Mammals are known to use Interaural Intensity Difference (IID) to determine azimuthal position of high frequency sounds. In the Lateral Superior Olive (LSO) neurons have firing behaviours which vary systematicaly with IID. Those neurons receive excitatory inputs from the ipsilateral ear and inhibitory inputs from the contralateral one. The IID sensitivity of a LSO neuron is thought to be due to delay differences between both ears, delays due to different synaptic delays and to intensity-dependent delays. In this paper we model the auditory pathway until the LSO. Inputs to LSO neurons are at first numerous and differ in their relative delays. Spike Timing-Dependent Plasticity is then used to prune those connections. We compare the pruned neuron responses with physiological data and analyse the relationship between IID's of teacher stimuli and IID sensitivities of trained LSO neurons.
E-info
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