GENERAL HISTOLOGY

NERVOUS SYSTEM SPECIAL SENSE

CEREBRUM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Stimulation of which of the following may cause a person to involuntarily move his/her arm?
A
somatosensory cortex
B
motor cortex
C
Wernicke’s
D
auditory cortex
E
visual cortex
Explanation: 

Detailed explanation-1: -It is the origination point of neural signals for voluntary muscle movement. Experiments in the 1930s by Foerster and Penfield demonstrated that electrical stimulation of the motor cortex could cause muscle contractions (see pages 110-112 for more).

Detailed explanation-2: -The motor cortex sends voluntary motor commands to the spinal cord but can also be involved in involuntary movements [17, 38–42].

Detailed explanation-3: -What is motor cortex stimulation? Motor cortex stimulation is a type of neuromodulation, which is a surgical procedure that implants electrodes in the body to change how the nervous system works. Motor cortex stimulation involves placing the electrodes on the surface of the brain to control pain signals.

Detailed explanation-4: -Answer-d. (d) Motor cortex is crucial for movement and bodily functions thereby stimulation of this part of the brain will cause movement of the lips and mouth.

There is 1 question to complete.