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Unformatted text preview: PYSC 326 (Fall 2008) - Note Chapter 1. Introduction BOX 60 yo woman Miss S. with stroke of right parietal lobe has left unilateral neglect of body and visual images [brain -- the last frontier] curiosity is a common human trait explanations of the world (i) animism in ancient times natural phenomena that moved were animated by spirits (ii) the mind-body question speculation on the nature of the mind (a) dualism (b) monism physiological psychologists take an empirical, practical, monistic approach to the study of human nature Understanding Human Consciousness: A Physiological Approach THEME studying human consciousness is possible consciousness humans are aware of and can tell others about our thoughts, perceptions, memories, feelings consciousness can be altered, can be studied Blindsight THEME consciousness is not a general property of all parts of the brain; these parts may be related to our ability to communicate blindsight KEY our behavior can be guided by sensory information that we are unaware of BOX grandfather Mr. J. with stroke that left him almost completely blind, but can correctly grab cane held in different orientations KEY several mechanisms are involved in vision (a) primitive [reptile, amphibian] visual system is evolutionarily older (b) second mammalian system is evolutionarily newer -- KEY damaged in blindsight Split Brains THEME disconnecting parts of the brain involved with perceptions from parts that are involved with verbal behavior also disconnects them from consciousness treatment for severe epilepsy corpus callosum split-brain operation cerebral hemispheres disconnection is not so obvious to observers because only one hemisphere is verbal; both hemispheres seem to understand patient notices that left hand seems to have a mind of its own e.g., left hand can pick out object that matches right nostril odor even though left verbal reports noe....
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- Fall '08