Core Studies

?
  • Created by: Jacob_
  • Created on: 22-03-17 12:13

Sperry - Hemispheric Deconnection

Aim - To record the psychological effects of hemispheric deconnection in patients with severe epilepsy, and to see how the left and right hemispheres work in a normal brain.

Sample - 11 participants with a split brain who had previously had severe epilepsy. Collected through opportunity sampling as P's already had split brain procedure.

Apparatus - Useda device called a tachistoscope which projects an image to left or right of a fixation point for a certain amlunt of time.Had a little gap underneath the screen for the hands so the P's could handle objects out of sight. 

Proceduer - Participant had one eye covered, and was asked to look at a fixation point in the centre of a projection screen. Visual stimuli were projected onto the screen to either the left or right of the fixation point for 0.1 second (too quick for participant to turn their head so only appeared in one visual field). Then P's had to complete 5 tasks: Verbal, Verbal, Recognition, Tactile, Dual processing.

Conclusions - Split brain patients have two different streams of consciousness, each working independently. This supports the argument of lateralisation of function. Split brain patients have a lack of cross intergration where the second hemisphere doesnt know what the first is doing.

1 of 1

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Core studies resources »