THEATER 335 Lecture Notes - Lecture 14: Tachistoscope, Causal Inference, Confabulation
Document Summary
Surgical cutting of the corpus collosum: no harmful effects in daily life. Vision: left hemisphere sees right visual field (rvf) & vice versa. Even with full commissurotomy, by moving one"s eyes, one can see the entire scene with each of the two hemispheres. Pro: allows to study hemisphere functioning directly, by seeing what the intact hemisphere can do. Reorganisation prior to surgery might have occurred (= functional reorganisation due to damage) Hemispheres might acquire new functions post-surgery (= plasticity) Unilateral testing: ask to identify objects by touch alone (inside box) Right hand = naming possible, left hand = no naming but still knew what left hand had felt bc. could show how to use it (e. g. spoon) Right hemisphere knows: projection tachistoscope (t-scope) to lateralise visual stimuli: focus on central cross, picture shown on either left or right side + cross-modal selection procedure. Rvf = naming, lvf = no naming but could select matching object with left hand.
