Figure Q1-14 Shows Commonly Used Circuit Motifs

question 3

Short Answer

Figure Q1-14 shows commonly used circuit motifs. Identify the type of circuit motif featured in each of the following examples. Figure Q1-14
A. In the vertebrate retina, afferent neurons excite inhibitory interneurons that project onto the targets of their neighbors.
B. Sensory neurons relay somatosensory stimuli to the primary somatosensory cortex via nuclei in the brainstem and thalamus.
C. A class of cerebral cortical neurons inhibits other classes of inhibitory neurons in the brain, indirectly increasing the activity of final targets.
D. In the insect olfactory system, excitatory projection neuron axons project to two different brain structures, the mushroom body and the lateral horn.
E. In the vertebrate knee-jerk reflex, two parallel excitatory pathways inhibit each other via inhibitory neuron intermediates.

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