PSYD50H3 Lecture Notes - Retinotopy, Retrosplenial Cortex, Parahippocampal Gyrus
Document Summary
Previous studies: buildings without background can have a large response in cortical regions near the collateral sulcus (buildings are large stable structures that define the geometry of local space, or subjects were familiar with spatial context of landmarks). Also patients with damage to parahippocampal cortex experience great difficulty finding their way around novel environments. Methods: 10 right handed students ( 1 omitted) performed experiment 1 and 2. They were scanned with fmri while viewing 5. 5 min videotapes. Contained scrambled and intact versions of black and white photographs of faces, common objects, houses and scenes. Each subject was run on 2-3 scans for both the passive and 1 back tasks for each experiment. Back task: press a button whenever they saw two identical pictures in a row. Each scan lasted 5 min and 36s , each photograph presented for 300 ms, blank interval of 500ms.
