Related Experiment Video
Updated: Oct 12, 2026

10:50
Functional Imaging of Auditory Cortex in Adult Cats using High-field fMRI
Published on: February 19, 2014
The effects of dopamine, noradrenaline and serotonin in the visual cortex of the cat
Abstract:
The predominant effect of dopamine, norepinephrine and serotonin on the photically-evoked urinary activity was a prolonged inhibition of firing. These amines were also able to block acetylcholine-induced excitations and for longer periods of time than GABA.
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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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