The Divided Brain


Right Hemisphere
Sees one side of retinal images			
Speechless, but understands speech--------- controls Left side of body

	corpus callosum (link between hemispheres)

Left Hemisphere--------------------controls Right side of body
Sees other side of retinal images 
Has speech


Results of cutting corpus callosum. 

1. Breakdown of co-ordinated action
2. Breakdown of co-ordinated knowledge

For example, when 
orange flashed to left retina, apple to right, 

left hand grasps apple; right, orange. 


The person with corpus callosum is ?

1. 2 people co-operating closely?
2. 1 1/2 people (One with speech, the other speechless)? 


All of us with intact corpus callosum are?

1. 2 people co-operating, unaware of co-operating?
Or?

Are we like two people who together to row a boat, so well co-ordinated so as to
never come into conflict?