Question

In: Anatomy and Physiology

- Where receptive fields are small, they are served by more OR fewer (choose one) receptors...

- Where receptive fields are small, they are served by more OR fewer (choose one) receptors in that region. Where receptive fields are small, you are more OR less (choose one) sensitive?

- Which of the following is NOT one of the steps of sensory processing? Choose one

a. transduction of the signal

b. transmission of the signal to the integrating center

c. perception of the stimulus at the integrating center

d. motor response to the signal

Thank you so much!

Expert Solution

1) answer is more receptors.

Small receptive fields are more sensitive, as they have neurons overlapped on one another and the receptors are abundant which are involved in precise and accurate perception of the stimulus. They are densely packed and they mainly perceive stimulus from small areas.

Example - lips

Finger tips

Tongue.

2) More sensitive

As explained above, smaller receptive fields have many receptors or neuronal endings which overlaps over one another and hence detects more stimulus more precisely, thus are more sensitive.

Larger receptive fields have fewer neurons which are spread in a wide area due to which localisation of stimulus is poor and also receptors are few in larger receptive fields. Example - internal organs, back of the body.

3) answer is motor response to the signal.

Motor response to the signal is not a part of sensory processing ,it is rather a physical response to the stimulus sensed by integrating center and is a part of reflex arc

Sensory processing has following parts -

Sensation - sense organs detects the environment stimulus at their receptors.

Signal transduction - sensed stimulus is converted into nerve impulses in the form of electrical impulses. Example - pressure, vibration, touch (mechanical energy) is converted into electrical energy.

Transmission of stimulus - in the form of electrical energy to the integrating center for further processing.

Interpretation - Perception of this electrical impulses at the integrating center into meaningful information, to generate a response for the stimulus received.

Sydney Mullin answered 1 year ago

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