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Unformatted text preview: Major brain segments: Psych 1 09/04/2008 02:30:00 Major brain segments Forebrain midbrain hindbrain ------- spinal cord Neural plate Flap of skin Develops on embryo We have: Huge forebrain, moderate hindbrain, tiny midbrain Midbrain Good for rapid eye-scanning, owls have large midbrains Reticular Formation o Cycles of attention and alertness ~ 45 min o Sleep / wake cycles REM vs non-REM General arousal attuning to whats going on at the moment Superior Colliculi (left and right) o Visual targeting saccades Something dropped you turn around and look Jerky movement, how eyes move when there is no movement to track More primitive eye movement Birds only have saccades Inferior Colliculi (left and right) o Auditory targeting Hindbrain Cerebellum o Looks like cauliflower o Old inner cerebellum balance affected by alcohol o New (outer) cerebellum rapid automatic movements, timing of movements and thoughts Pons o Means bridge o Where things cross (?)Where things cross (?...
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- Winter '08