Psychology 459 – March 23, 2006

Studies on the Human Brain

By Tawny Antonio


Forty Studies That Changed Psychology (pp. 1-26). By Roger Hock (2005). Pearson/Prentice Hall


Instructions for this activity are found at:


Instructor: Dr. Leon James


I.                    The Human Brain

A.     Studied by Roger W. Sperry and Michael Gazzaniga

B.     Two hemispheres of the brain operates and specializes in different things

1.      The left brain specializes in speaking, writing, mathematical calculations, reading, and is also the primary center for language

2.      The right brain specializes in recognizing faces, solving problems involving spatial relationships, symbolic reasoning, and artistic activities

3.      The left side of the brain is responsible for movement in the right side of the body and the right side of the brain is responsible for the left side of the body

C.     The two hemispheres communicates through the corpus callosum

1.      When the corpus callosum is severed, the two halves of the brain function independently


II.                 Methods Used to Study the Human Brain

A.     Researchers were able to study the human brain of epileptic patients

1.      These studies were referred to as the split-brain studies

2.      The researchers would measure the physical changes in the patients brain

B.     Testing visual abilities

1.      A picture of an object, a word, or parts of words would be transmitted to either the right- or the left-brain hemisphere, but not to both

2.      Results

a.       It was concluded that both hemispheres are capable of seeing and are equally skilled in visual perception

b.      Participants had failed to say that they had seen the object when it was presented to the left side of the visual field

1.      This is not because they didn’t see them, but because the center for speech is located in the brain’s left hemisphere

C.     Testing tactile abilities

1.      Participants could feel, but not see an object, a block letter, or a word in cutout block letters

2.      Results

a.       When an object was placed in the right hand in such a way that the participant could not see or hear it, the participants was able to identify the object

b.      When the same objects were placed in the left hand, the participants were not able to identify the object

c.       These results provide support that verbal abilities are in the left hemisphere of the brain


III.               Relating Such Ideas to Theistic Psychology

A.     By relating the human brain to Theistic Psychology, we could identify which part of the brain corresponds to certain concepts

1.      The left brain corresponds to the cognitive self

         a.  Our cognitive organs are activated by truth (light)

2.      The right brain corresponds to the affective self

         a.  Our affective organs are activated by good (heat)

B.     We must understand that Divine Speech controls the molecules in our brain through the Laws of Correspondence

1.      Being able to do good and truth that comes out of Divine Speech brings an individual closer to God



Related Websites:'splitbrain%20studies'

This is a website that was actually written by Michael Gazzaniga.  He goes into greater specifics of each side of the brain.  I selected this website because I thought that it would give us greater insight into such studies.

This website talks about the different functions of the two hemispheres in the human brain.  The website visually presents two experiments used by Roger W. Sperry.  I chose this website because I thought that it would help to understand what the experiments were like.

This website is actually part of our Lecture Notes.  I chose it because it provides information in great detail about our mental biology, Divine Speech, and the Laws of Correspondence.  I think it will also be helpful because the Lecture Notes also includes diagrams.



My Home Page:


Class Home Page: