Crowdly

neurons getting input from the shoulders would have the smaller sized RFs

neurons getting input from the fingers would have the smaller sized RFs

RF sizes will depend on the size of skin area you examine

RF sizes should be approximately the same size

Image failed to load: Somatic spinal cord pathways image

With respect to the image below which shows the flow of somatic sensory information from the periphery into the spinal cord, panel B depicts the flow of

All somatic information

Pain & temperature information

Discriminative somatic information

Non-discriminative somatic information

Pain information

Progressing beyond primary somatosensory cortex, neuronal responses in higher-order somatosensory cortex:

Faithfully mirror the pattern of responses of cells in primary cortex.

Faithfully mirrors the fact that cellsin primary cortex are sensitive to the direction of movement of stimuli.

Differ such that cells acquire sensitivity to stimulus features to which cells in primary cortex are not sensitive

Differ such that all become sensitive to the direction of movement of stimuli.

Become more sensitive than responses in cells in primary cortex.

With respect to information from the body surface, brainstem nuclei process

Proprioceptive, fast pain and cold temperature information

Only non-discriminative somatic information

Both discriminative and non-discriminative somatic information

Only discriminative somatic information

Proprioceptive and fast pain information

Image failed to load: Brain image

In the image below, electrical activity in these areas is most likely to be monitored to determine if brain death has occurred.

G, H and A

E and F

B and D

B, C and D

D, E and F

The concept that sensory areas of the brain contain systematic maps of the receptor surface

Means that neurons in each part of a sensory nucleus or field receive input from all parts of the appropriate receptor surface

Means that neurons in different parts of a sensory nucleus or field receive input from different parts of the appropriate receptor surface

Means that neurons in different parts of a sensory area nucleus or field receive inputs from the skin surface

Is indicated by the fact that sensory cells at higher levels of the CNS are larger than sensory cells at lower levels of the CNS

Is indicated by the fact that sensory cells at higher levels of the CNS have more complex responses than sensory cells at lower levels of the CNS

Image failed to load: spinal cord image

In the image below, the cell bodies of motor neurons controlling skeletal muscle are indicated by the label

The Autonomic Nervous System allows the CNS to

Co-ordinate activity across a number of target tissues or organs

Precisely control particular skeletal muscles

To release hormones to control activity in the body only over the very long term

Cause the release of hormones from the Hypothalamus

Use feedback mechanisms rather than just feedforward mechanisms of information flow

The fastest route by which the CNS controls the body is

Through efferent motor neurons of the Autonomic Nervous Systems to skeletal muscle

Through afferent neurons of the Somatic Nervous Systems

Through afferent neurons of Somatic and Autonomic Nervous Systems

Through efferent neurons of the Autonomic Nervous Systems to internal organs

Through the motor neurons of the somatic nervous system

Image failed to load: Brain image

In the image below, which label identifies the area which is most likely to be involved in higher brain functions, like personality, aggression, decision-making etc?