PSYC 105 Lecture Notes - Lecture 9: Hemispatial Neglect, Parietal Lobe, Inattentional Blindness
Document Summary
Inattentional blindness: focus on one stimulus so do not see other ones. Without atte(cid:374)tio(cid:374), do(cid:374)"t ha(cid:448)e conscious perception: however, unconscious perception is present without attention. Task to identify differences requires attention and focus: attention system misses a lot of things in the environment unless specifically focusing on it. Early selection hypothesis: attended input makes it through to consciousness, unattended input is filtered out, electrical brain activity for attended inputs differs within 70 ms from unattended inputs. Late selection hypothesis: attended and unattended input processed for meaning, but only attended input makes it through to consciousness, stimuli not attended to have effects on perception, which indicates late selection. Task load: ho(cid:449) diffi(cid:272)ult the task is; ho(cid:449) (cid:373)u(cid:272)h of a perso(cid:374)"s (cid:272)og(cid:374)iti(cid:448)e resources are used for a task: cognitive resources: brain power, low-load condition: doesn"t use a lot of (cid:272)og(cid:374)iti(cid:448)e resour(cid:272)es (easy task to process)
