Ray Awoke One Morning to Find That He Could Not

question 530

Multiple Choice

Ray awoke one morning to find that he could not see anything in the upper right side of his visual field, his right eye and the right side of his mouth looked different in the mirror, his gait when walking was a bit awkward, and he felt generally "clumsy." Ray is exhibiting

• A)neurological soft signs of a stroke.
• B)the initial onset of spatial neglect.
• C)hard neurological signs of facial agnosia.
• D)the initial onset of Alzheimer's disease.

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Definitions:

Feature Detectors

Cells in the visual cortex that are sensitive to specific features of the environment.

Orientation

A person's basic awareness of who, where, and when they are; can also refer to sexual orientation or the initial introduction to a new environment or situation.

Peripheral Vision

The part of vision that occurs outside the very center of gaze, allowing humans to perceive objects and movement outside of the direct line of vision.

Rods

Photoreceptor cells in the retina of the eye that are highly sensitive to light and enable vision in low-light conditions but do not support color vision.