AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

THE CEREBRAL CORTEX

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The left cerebral hemisphere generally controls the right side of the body and vice versa. This is ____ organisation
A
Unilateral
B
Contralateral
C
Ipsilateral
D
Bilateral
Explanation: 

Detailed explanation-1: -The hemispheres communicate with each other through the corpus callosum which is a bundle of fibers between the hemispheres. Each hemisphere controls muscles and glands on the opposite side of the body (i.e. the right side of the brain or hemisphere controls the left side of the body.)

Detailed explanation-2: -The left cerebral hemisphere controls movement of the right side of the body. Depending on the severity, a stroke affecting the left cerebral hemisphere may result in functional loss or motor skill impairment of the right side of the body, and may also cause loss of speech.

Detailed explanation-3: -The human brain is basically symmetrical, split down the middle: the right cerebral hemisphere receives sensory input from and directs movement on the left side of the body, while the left hemisphere governs corresponding functions for the right side. Symmetry only goes so far, however-there are differences, too.

Detailed explanation-4: -The contralateral organization of the forebrain (Latin: contra‚ against; latus‚ side; lateral‚ sided) is the property that the hemispheres of the cerebrum and the thalamus represent mainly the contralateral side of the body.

There is 1 question to complete.