SPERRY

Conscious awareness:

Knowledge of our own thoughts, existence and experiences

No single brain area appears to control __

Consciousness

Lateralisation of function:

Different hemispheres have different roles

Commissurotomy-a surgical procedure in which:

The corpus callous is severed

Visual field- all the ___ that can be seen in one moment

Visual stimuli

Stimuli from the LVF causes chemical reactions on the:

Right side of both sides

AIM- to demonstrate that each hemisphere possesses an:

Independent stream of conscious awareness

AIM- to demonstrate that each hemisphere has access to:

Memories that are inaccessible to the other hemisphere

SAMPLE- __ male and female participants who had undergone surgery to sever the corpus callosum

11

Sampling Technique:

Opportunistically sampled

Research Method:

Quasi lab experiment

Experiment Design:

Independent measures

How data was gathered:

1. Self report

2. Observation

Data type:

1. Quantitative

2. Qualitative

Sperry used a ___ to control whether the left or right side of the body would receive stimulation

Tachistoscope

Two ways stimuli is given it the participants:

Visual, tactile

Three ways the participants can identify if they are consciously aware of the stimulus:

Verbally, manual selection, drawing/writing

VISUAL TEST:with one eye covered, participants are instructed to stare at the centre lint on the screen, whilst visual stimuli is presented to the L or R VF, for __ seconds

0.1

TACTILE TEST: below the screen and behind the divider, participants would reach for objects presented to the ____

Left or right hand

VS RESULTS- stimuli presented to the RVF _____ verbally identified

Could be

VS RESULTS- stimuli presented to the LVF _____ verbally identified

Could not be

VS RESULTS- even when LVF stimuli could not be verbally identified, participants could ____ to a matching item or ___ with their left hand

Point with their left hand, draw the item with their left hand

RECOGNITION TEST-after visual stimuli was presented to one visual field, participants would not _____ if it was presented again to a different visual field

Verbally report recognising the stimuli

NUDE WOMAN TEST-image of a nude woman was presented to the __ would cause participants to blush, but not be able to explain why they were blushing.

LVF

COMPOSITE WORDS TEST:

Words were presented partly to the RVF and LVF

COMPOSITE WORDS TEST-participants would ___ the part of the word in the RVF

Verbally identify

COMPOSITE WORDS TEST-participants would ___ the part of the word in the left visual field

Draw with their left hand

TACTILE STIMULI RESULTS-objects presented to the ___ could be verbally identified, objects in the ___ could not.

Right hand, left hand

DUEL PROCESSING RESULTS-if two objects are presented simultaneously in each hand, both hands can ____ but will _____, when they’re hidden

Both hands can select their own object, ignore the other hands objects

CONCLUSIONS-each hemisphere seem to posses an _____

Independent stream of consciousness awareness

CONCLUSIONS-each hemisphere appears to have access to memories that are _____

Inaccessible to the other hemisphere