PSYC-104 Lecture Notes - Lecture 6: Orbitofrontal Cortex, Qualia, Locus Coeruleus
8 Dec 2015
School
Department
Course
Professor
Document Summary
Loudness: the dimension of auditory experience related to the intensity of a pressure wave. Pitch: human ear sensitive to 20 20 000 hz. Timbre: the distinguishing quality of sound; the dimension of auditory experience related to the complexity of the pressure wave. Organ of corti-tissue containing hair cells necessary for hearing. Once hair cells are damaged or die, do not grow back. Age related hearing loss: family history (genes, repeated exposure to loud noises, smoking, high frequency sounds are lost first: sound of some one talking. Sounds from different directions are not identical as they arrive at left and right ears: loudness, timing, phase. Near-sighted people have greater sensitivity to echos. The somatosensory system: touch and pain: our sense of pressure, temperature and injury. How we perceive touch and pain: withdrawal reflex. Pain: somatosensory cortex, limbic system (emotional component), brain controls activity in spinal cord: amplify, diminish. Spinal reflex may be activated (e. g. , withdrawal reflex for aversive stimuli)
