PSYC 2410 Chapter Notes -Secondary Somatosensory Cortex, Lamellar Corpuscle, Great Horned Owl
1 Aug 2013
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Perception of sound the perception of objects through the sounds that they make. Sound: vibration of air molecules a material wave. A complex wave can be expressed as the sum of simple sine waves. Human perception: 20 20,000 hz (cycles per sec) The scientist, may 10, 2004, page 25 after kolb & wishaw 2001. Columnar and tonotopic organization: each cortical column is optimally responsive to one dominant frequency range. Organized hierarchically: primary auditory cortex simple sounds, pure tones secondary auditory cortex complex sounds, specific voices, music, etc. We can localize sounds because we have two ears . On the three planes of the head (sagittal, transverse, horizontal). Ampulla: enlargement at the base of each canal. Also contain receptors, on the wall of the saccule and on the. Vestibular nerve (part of the viii cranial nerve) Projections to eye muscles help keep the eyes still in space as the head moves. Sensations from the surface and the inside of the body.
