PSYC 142 Lecture Notes - Lecture 23: Posterior Parietal Cortex, Hemispatial Neglect, Anosognosia
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Behavioral neurology: study effect of neurological damage on behavior and cognition, assumption: different brain areas have different functions. Completely aware that they are hallucinating: slight scotoma: human blind spot where optic ner(cid:448)e (cid:272)o(cid:373)es out a(cid:374)d (cid:449)e do(cid:374)"t ha(cid:448)e photoreceptors, but brain fills it in based on what they think should be there. Only right side gets their attention: object-sensory neglect: neglect left side of objects, neglect left side of time. If time goes l -> r, ignore the past. Sometimes confabulate if things happened in the past. The thi(cid:374)gs they see can still affect behavior: hemineglect only on the left side. Why: theory 1: attentional spotlight that we move around is controlled by left hemisphere, theory 2: left hemisphere is highly confabulatory. Anosognosia: people are completely unaware that they have a disability, usually right parietal damage, simultaneous hemineglect and anosognosia.
