The Organization of Neurons of the Visual Cortex into Columns

question 164

Multiple Choice

The organization of neurons of the visual cortex into columns with binocular cells at the borders of the columns allows for

• A) perception of color by binocular cells that each have a receptive field in the retina matching the stripes and columns in the visual cortex.
• B) binocular cells to interpret distance by measuring the disparity between the points at which the same stimulus falls on the two retinas.
• C) the optic chiasm to direct all visual input from each eye to the opposite hemisphere.
• D) individual retinal ganglion cells to have more than one receptive field due to a pattern of synapses between photoreceptors, horizontal cells, amacrine cells, and bipolar cells.
• E) an extensive field of vision.

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Definitions:

Nociceptors

Pain receptors; free endings of certain sensory neurons whose stimulation is perceived as pain.

Chemoreceptors

Sensory cells or organs responsive to chemical stimuli, involved in detecting changes in the chemical composition of the environment or body.

Nociceptor

A sensory receptor that responds to potentially damaging stimuli by sending signals to the spinal cord and brain, which is interpreted as pain.

Substance P

A peptide involved in transmitting pain messages to the brain and is involved in inflammatory processes.