PSYC 212 Lecture Notes - Lecture 17: Tinnitus, Interaural Time Difference, Detection Theory

• School: McGill University
• Department: Psychology
• Course: PSYC 212
• Professor: Mathieu Roy

Document Summary

Ex: recording from diff an nerve at diff region of cochlea: base of cochlea = threshold intensity lowest for frequency of 10 khz. Less sensitive when further from 10 khz [ / ] Cochlear place code = an fibers preferential differently tuned to frequency. Use location on basilar membrane to encode frequency/threshold. Problem = if high frequency wave many an cells fire so to differentiate need more than just. Neurons systematically fire at a given time point of the cycle. Refractory period of an fibers do not allow neurons to fire fast. Because of tip links only open k+ channels when shear force to right & no activation in opposite. Only on specific ascending phase of cycle so preferential for. Problem = when high frequency wave cochlea place code not sensitive enough. Encode frequency of sound wave by frequency of nerve. = an fibers have refractory period so cannot fire fast enough to. Follow fast frequency solution = volley principle.