PSY 3061 Lecture Notes - Lecture 19: Radial Arm Maze, Rhinal Cortex, Temporal Lobe
Document Summary
Delayed nonmatching-to-sample (dnms: also tested i(cid:374) rate, e. g. , (cid:862)mu(cid:373)(cid:271)(cid:455) (cid:271)o(cid:454)(cid:863, 2 objects placed over 2 food cups, food is under novel object, animal only rewarded if pushes aside novel object, very similar to monkey experiment. Impairment after damage to medial temporal lobe: hippocampus, amygdala, and rhinal cortex: now believed: hippocampus and rhinal cortex (not amygdala) Initially proposed: hippocampus + amygdala (mishkin: amygdala is not required for explicit memory, required does not mean sufficient. In tact hippocampus will beeline to platform: short, direct swim, animals with hippocampal lesions have random and elaborate swimming pattern, not able to successfully remember where platform is in space, neocortex lesion as control. Place cells = cells encoding a particular location in which the animal is located. Spatial (visual landmarks) over other cues that drive spatial learning: other cues facilitate acquisition, they are not required, spatial cues = visual cues, spatial integration when lack visual cues, relies on other cues.
