The Ability to Consciously Override the Impulse to Orient to a New

question 121

Multiple Choice

The ability to consciously override the impulse to orient to a new sensory stimulus is indicative of___________.

• A) enhanced levels of GABA
• B) decreased levels of dopamine
• C) behavioral vigilance
• D) top-down processing

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Definitions:

Photoreceptors

Specialized cells located in the retina of the eye that convert light into electrical signals, enabling the sense of vision.

Cones

Photoreceptor cells in the retina of the eye responsible for color vision and function best in relatively bright light.

Accommodation

In physiology, accommodation refers to the ability of the eye to change its focus from distant to near objects, achieved through the adjustment of the lens curvature.

Iris Muscles

Muscular structures in the eye that adjust the size of the pupil to regulate the amount of light entering the eye.