PSY 101 Lecture Notes - Lecture 7: Absolute Threshold, Color Vision, Oliver Sacks
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The stud(cid:455) of ho(cid:449) the (cid:449)o(cid:396)ld out the(cid:396)e gets i(cid:374) ho(cid:449) (cid:449)e (cid:272)o(cid:374)st(cid:396)u(cid:272)t i(cid:374)te(cid:396)(cid:374)al (cid:396)ep(cid:396)ese(cid:374)tatio(cid:374)s of the external world. Sensation refers to the stimulation of the sensory organs by physical energy from the external world, and the conversion of this energy into neural signals. The process through which information is translated is through transduction (sensation process). Perception refers to our interpretation of what we sense based on experience, expectations and surroundings. We can fail to perceive what we sense. Example: the construction worker study when the two men switch places. For example: people who suffer from prosopagnosia cannot perceive human faces but they can perceive objects. Oliver sacks wrote a (cid:271)ook (cid:272)alled (cid:862)the man who mistook his wife fo(cid:396) a hat(cid:863). The idea enters your sensory system and (cid:455)ou do(cid:374)"t p(cid:396)o(cid:272)ess it (cid:271)e(cid:455)o(cid:374)d that. Absolute threshold: the minimum stimulation necessary to detect physical stimulation half the time; that is, a particular light, sound, pressure, taste, or odor.
