PSYC 308 Lecture 12: Oct 11 Physiological Psych notes
Document Summary
Slide 4 properties of sound amplitude frequency timbre. Hammer, anvil, stirrup: small bones connected to the tympanic membrane. 3 small tunnels - scala vestiboli, scala media, scala tympani. Place theory hair cells are sensitive to only one sound frequency. Frequency theory synchrony of sound and auditory potentials. So we explain by using both theories - Low frequency sounds explained by frequency theory. High frequency sounds explained by place theory. Thicker than average auditory cortex in the right hemisphere fewer connections from auditory cortex to frontal cortex possibly genetic. Absolute pitch ability to hear a note and identify it possible genetic disposition early and extensive musical training. A1 is the destination for most information from opposite ear and the auditory system. Slide 16 organization of the auditory cortex parallels the visual cortex. A1 is important for auditory imagery motion deafness occurs with damage within the superior temporal cortex axons from the auditory cortex must develop from birth.
