Sensory receptors Sensory nerve endings that respond to stimuli

Perception Process by which our brain organizes and interprets sensory info.

Absolute threshold Minimum stimulus energy needed to detect a particular stimulus 50% of the time

Subliminal Below a persons absolute threshold for conscious awareness

Sensory adaptation Reduced sensitivity in response to constant simulation

Perceptual set Mental tendencies and assumptions that is set up to perceive one thing or another

Wavelength Distance from the peak of one light wave or sound wave to the peak of the next

Hue Dimension of color that is determined by wavelength of light

Optic nerve Nerve that carries neural impulses from the eye to the brain