Improving the Dynamics of Responses to Amplitude Modulated Stimuli by Modeling Inhibitory Interneurons in Cochlear Nucleus

Author

Dugue, P. ; Le Jeannes, R.L. ; Faucon, G.

Author_Institution

INSERM, Rennes

fYear

2007

fDate

22-26 Aug. 2007

Firstpage

1286

Lastpage

1289

Abstract

Amplitude modulation is an important feature of communication sounds. A phenomenological model of the auditory pathway that reproduces amplitude modulation coding from the outer ear to the inferior colliculus is presented. It is based on Hewitt and Meddis´ work. To improve the temporal coding for high level stimuli, high spontaneous rate and low spontaneous rate auditory nerve fibers innervate chopper cells of the cochlear nucleus. Wideband inhibitory interneurons which limit high spontaneous rate fibers connected to chopper units are added in this nucleus. The realistic structure we propose gives results closer to physiological data in terms of synchronization.

Keywords

amplitude modulation; cellular biophysics; ear; hearing; neurophysiology; Hewitt - Meddis work; amplitude modulated stimuli; amplitude modulation coding; auditory pathway phenomenological model; cochlear nucleus; high level stimuli; inferior colliculus; innervate chopper cells; low spontaneous rate auditory nerve fibers; outer ear; physiological data; temporal coding; wideband inhibitory interneurons modeling; Amplitude modulation; Choppers; Ear; Frequency modulation; Frequency synchronization; Nerve fibers; Neurons; Optical fiber communication; Psychoacoustic models; Wideband; Acoustic Stimulation; Animals; Auditory Pathways; Auditory Perception; Cochlear Nucleus; Computer Simulation; Hearing; Humans; Interneurons; Models, Neurological; Nerve Net; Neural Inhibition;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE

Conference_Location

Lyon

ISSN

1557-170X

Print_ISBN

978-1-4244-0787-3

Type

conf

DOI

10.1109/IEMBS.2007.4352532

Filename

4352532