Eric Young - Timing in the Auditory System
Eric Young has spent a lifetime studying sub-cortical parts of the auditory brain. I’m very happy to welcome him to Stanford, so we can hear about his careful work exploring the auditory system.
Who: Eric Young (Johns Hopkins)
When: Friday March 10 at 10:30AM
What: Excitatory Post-Synaptic Current (EPSC) analysis in the synapse from hair cell to auditory-nerve terminal
Where: CCRMA Seminar Room - Top Floor of the Knoll at Stanford
Why: The brain represents time better in the auditory system than anywhere else!
Eric Young is my favorite auditory neurophysiologist. Don’t let the title scare you. Eric designs and presents incredibly clear experiments on important aspects of auditory perception.
Bring your favorite ears to the Hearing Seminar at Stanford.
Excitatory Post-Synaptic Current (EPSC) analysis in the synapse from hair cell to auditory-nerve terminal
Johns Hopkins University
The synapse between hair cells and auditory nerve fibers provides precise temporal information about acoustic events, such as transients in complex stimuli and the phase of sound waveforms at frequencies up to the kHz range. To accomplish these tasks, the synapse produces a high rate of spontaneous and stimulus-driven discharge in auditory-nerve fibers, with irregular spike trains and little or no temporal summation of presynaptic events. In this talk, recent recordings from the auditory-nerve terminals on hair cells are described. Several properties of auditory nerve spike trains, including irregularity and the excess-variance observed in spike counting statistics are shown to be properties of the presynaptic release process. The data suggest that most properties of auditory coding derive from the presynaptic release process, with minimal modification by the electropysiological properties of the auditory nerve terminal.
Eric Young is an Emeritus Professor of Biomedical Engineering, Neuroscience, and Otolaryngology - Head and Neck Surgery at Johns Hopkins University. He received his BS from Caltech, and his PhD from Johns Hopkins.