Answer;
-Sensation
Sensation is the activation of receptors in the various sense organs
Explanation;
-Sensation is the activation of sensory receptor cells at the level of the stimulus. Perception is the central processing of sensory stimuli into a meaningful pattern. Perception is dependent on sensation, but not all sensations are perceived.
-Receptors are the cells or structures that detect sensations. A receptor cell is changed directly by a stimulus. A transmembrane protein receptor is a protein in the cell membrane that mediates a physiological change in a neuron, most often through the opening of ion channels or changes in the cell signaling processes.
The answer to this question would be: <span>a. optic chiasm
The optic nerve will be crossed in optic chiasm. Only a part of the optic nerve is crossing the midline. So, if there is a damage in the nerve after crossing, the visual loss will not only appear in one eye but half of both eye. Damage in right visual cortex will cause the left and right eye losing their half (left part) of their visual field.</span>