PSYCH 3A03 Lecture Notes - Cochlear Nucleus, Afferent Nerve Fiber, Trapezoid Body

• School: McMaster University
• Department: Psychology
• Course: PSYCH 3A03
• Professor: Paul Faure

Document Summary

Tonic vs. burst mode (or tonic vs. phasic) Click stimulus with an auditory nerve fiber: periodic respond and the time interval corresponds to the frequency of the stimulus. Psth from a cochlear nucleus unit (higher order: tuned to the same frequency but the click stimulus does not produce the same pattern as that in the auditory nerve fiber, longer latency. We expect to see latencies become longer as we are moving higher up. Primary-like: no spontaneous rate or suppression but primary-like pattern. Pl with notch: moment of suppression after immediate onset of the stimulus. Onset: fire to onset of the stimulus. Pauser: onset and pause, buildup towards the end but not responding to the offset. Buildup: response builds up during the stimulus then turns off. Know: primary afferent response, primary-like, and more complex patterns emerges higher up in the processing. Trapezoid body (also known as medial, passes through before going to the other side)