Split Research into hemispheric lateralisation
Hemispheric lateralistaion- Two halves of the brain function differently. One half of
the hemisphere is responsible for one mental process and behaviour and the other
half is responsible for another mental process.
- Left = language
- Right = spatial awareness and creativity
1/10th of a second (0.1)
Sperry did the split brain study
Corpus Callosum (helps hemispheres work together) is cut in patients suffering
epilepsy and seizures before the study took place.
1. Describing what you see: A picture was shown on the right visual field and
they were able to describe what was seen.
If the same object was shown on the left visual field, the patient struggled
to describe what they saw, and said that they didn’t see it.
2. Recognition by touch: Object is hidden from the screen and the participant
had to guess what the object was by holding and touching it with their left
hand (non dominant hand).
3. Composite field: If two words were presented at the same time on either side
of the visual field (key and ring), the patient can say the object shown on the
right visual field, but draw the item presented to the left.
4. Matching faces: The face on the right hemisphere (left visual field) was always
selected by the patient, but the picture on the left was always ignored.
- Left hemisphere (right visual field) dominated when the patient was
asked to verbally describe the picture, the right hemisphere dominated
in selecting a matching picture.
Hemispheric lateralistaion- Two halves of the brain function differently. One half of
the hemisphere is responsible for one mental process and behaviour and the other
half is responsible for another mental process.
- Left = language
- Right = spatial awareness and creativity
1/10th of a second (0.1)
Sperry did the split brain study
Corpus Callosum (helps hemispheres work together) is cut in patients suffering
epilepsy and seizures before the study took place.
1. Describing what you see: A picture was shown on the right visual field and
they were able to describe what was seen.
If the same object was shown on the left visual field, the patient struggled
to describe what they saw, and said that they didn’t see it.
2. Recognition by touch: Object is hidden from the screen and the participant
had to guess what the object was by holding and touching it with their left
hand (non dominant hand).
3. Composite field: If two words were presented at the same time on either side
of the visual field (key and ring), the patient can say the object shown on the
right visual field, but draw the item presented to the left.
4. Matching faces: The face on the right hemisphere (left visual field) was always
selected by the patient, but the picture on the left was always ignored.
- Left hemisphere (right visual field) dominated when the patient was
asked to verbally describe the picture, the right hemisphere dominated
in selecting a matching picture.
