According to the Bell Magendie law
ventral roots carry motor information while dorsal roots carry sensory information
Which of the following is ture about laminae in the cerebral cortex?
The laminae vary in thickness in different areas
Research indicates that the behavioral effects of the cerebellum may be due to its role in
Focusing and shifting attention and organizing sensory inputs
Someone who suddenly loses the ability to identify objects by feeling them has probably suffered damage to what area of the cerebral cortex?
When someone tickles you and the tickling sensation will be carried by neurons that are part of the nervous system
Suppose a virus damaged only the dorsal roots of the spinal cord, but not the ventral roots. what would happen to the sonsory and motor abilities of the affected area?
Loss of sensation, but preserved motor control
Secretions from which gland will also affect the secretion of hormones form the thyroid gland, adrenal galand and ovaries or testes?
Seeing a snake come out of the drain in the bathtub might increase your heart rate, dilate your pupils, cause you to sweat and raise the hair on your neck. These responses are due to the activity of the ____ nervous system.
Gray matter in the brain and spinal cord is mainly composed of what structures?
cell bodies and dendrites
Erection of the hairs, know in humans as "goose bumps," is caused by activation of which branch of the nervous system?
Brain studies of blind people suggest that they have greater attention to touch and auditory stimulation because
Their visual cortex is used for touch and verbal tasks
One limiting factor in the ability of damaged axons to regenerate in the brain and spinal cord is that
they regenerate only 1-2 millimeters
Which of the following aspects of brain and neural functioning can be most clearly altered by experience?
structure of dendrites and axons
After damage to the visual cortex, a rat no longer approaches the white card it has been trained to approach. What is the evidence that the rat has not completely forgotten the task?
It can relearn the task faster than it can learn to approach a black card.
Musicians who use the left hand to finger the violin strings have some alterations in one brain area, which is the:
right hemisphere postcentral gyrus.
The formation of a neuron's distinctive shape occurs during the ____ stage of neurogenesis.
Central nervous system axons regenerate much better in fish than in mammals because fish:
myelin does not secrete proteins that inhibit axon growth.
Which of the following treatments would be most likely to help a patient starting several days after a stroke?
giving stimulant drugs combined with physical
Which of the following is TRUE concerning the duration of a self-generated sleep/activity cycle?
It is highly consistent in a given individual in a given environment
What happens if people are put in an environment that is constantly dark?
They complain that they have difficulty waking up.
Which of the following occurs as a normal night's sleep progresses?
stage 4 decreases, while REM increases
Which of the following structures is NOT a brain structure of arousal and attention?
A key area of the hypothalamus, particularly important in the regulation of the biological clock, is the:
A recent hypothesis proposed that the role of REM is:
to shake the eyeballs back and forth in order to get sufficient oxygen to the corneas of the eyes.