BCS 110 Lecture Notes - Lecture 10: Tectorial Membrane, Basilar Membrane, Auditory Cortex

• School: University of Rochester
• Department: Brain and Cognitive Sciences
• Course: BCS 110
• Professor: Kevin Davis

Document Summary

9:41 am: func(on of the auditory system, perceive sound (i. e. to localize & iden(fy sound in space, physical dimensions in sound relate to perceptual dimension. Complexity - (mbre: sinusoidal waves (not all things in environment are this may be more complexity) *timbre, natural sounds are complex, complex paperns of vibra(ons, fourier analysis- breaks a natural sound down into its component sine waves. Simple sinusoids (harmonics) broken into: complex rela(onship between sound components and percep(on, the ear, sound propaga(on: Vibra(ons of uid dissipated at round window: ossicles: force concentra(on- concentrate force to small area pressure wave ampli ed, the cochlea, 3 chambers (scala); Prefrontal cortex: posterior vs. anterior (where vs. what) Ba vs. vah video (see lips say something else vs. what you hear) Ventral stream (hearing what but seeing lips say something di erent: visual can override auditory, damage to auditory system, lesions of auditory cortex. Unilateral: disrupts ability to localize sounds in contralateral hemi eld.