PSY 449 Lecture Notes - Lecture 5: Frontal Lobe, Visual Cortex

• School: University of Oregon
• Department: Psychology
• Course: PSY 449
• Professor: Christina Karns

Document Summary

Selective auditory attention (cid:862)(cid:374)ot just a party tri(cid:272)k(cid:863) (listening: dichotic listening (two stories are played into your earphones, one in each ear, u(cid:374)atte(cid:374)ded spee(cid:272)h see(cid:373)s like it does(cid:374)"t e(cid:448)e(cid:374) register. Filtering information: data from selective attention studies suggest that unattended info is filtered out. Early selection theories: stimuli are filtered at an early stage of process: broad(cid:271)e(cid:374)t"s filter theory: Late-selection theories: filtering occurs after stimuli undergo full perceptual processing. Treisman (1960): proposed an intermediate position: filtering ca(cid:374) (cid:271)egi(cid:374) early (cid:271)ut it is(cid:374)"t complete rather unattended info is attenuated. Very salient stimuli can reach awareness w/o being attenuated. Top-down: (endogenous, voluntary, goal-directed): how we select one stream of info over another: pos(cid:374)er"s spatial (cid:272)ueing task (1980, effects of covert, top-down spatial attention. Bottom up: (exogenous) from stimuli in the environment: reflexive orienting, comparing reaction times with salient distractor (e. g. a red button that is distracting you from the real target)