2013 Sensory Physiology

During lateral inhibition, Answer

1. there is a decrease in the contrast between strong and weak signals.
2. the activity of neurons in series with the primary afferent neuron whose receptive field is in the center of the stimulated area are increased.
3. primary afferent neurons release both excitatory neurotransmitters from some axon terminals and inhibitory neurotransmitters from others.
4. the area of sensation is less than the area of stimulation at the level of the second order neuron.

5. information from neurons with overlapping receptive fields converges to increase the response of second order neurons.