In the advanced vertebrates, including man, the two large hemispheres of the cerebrum of the brain serve as centers of perception, of voluntary motion, and of the higher mental faculties such as thought and memory. The two hemispheres are connected by several bands of nerve tissue the major tissue being the corpus callosum. The two hemispheres control the motor and sensory responses of the opposite sides of the body. Some hemispheric differences in function were reported as early as 1861 when Dr. Paul Broca observed that patients with lesions on their left cerebral hemispheres were more likely to suffer loss of speech than were those with lesions on their right hemispheres. From a host of such observations it was concluded that the left hemisphere of the cerebrum controls the function of speech.
Iowa Science Teachers Journal
© Copyright 1978 by the Iowa Academy of Science
"Teaching Both Brains,"
Iowa Science Teachers Journal: Vol. 15
, Article 9.
Available at: https://scholarworks.uni.edu/istj/vol15/iss2/9