Which of the following is FALSE about sensation? a. When sensory information is detected by a sensory receptor, sensation has occurred. b. All sensory systems have absolute and difference thresholds. c. Sensory receptors are specialized neurons that respond to specific stimuli. d. Sensation refers to the way sensory information is organized, interpreted, and consciously experienced.

a. When sensory information is detected by a sensory receptor, sensation has occurred. TRUE

For example, light that enters the eye causes chemical changes in cells that line the back of the eye. These cells relay messages, in the form of action potentials, to the central nervous system.

b. All sensory systems have absolute and difference thresholds. FALSE

Absolute threshold refers to the minimum amount of stimulus energy that must be present for the stimulus to be detected 50% of the time.

c. Sensory receptors are specialized neurons that respond to specific stimuli. TRUE

d. Sensation refers to the way sensory information is organized, interpreted, and consciously experienced. TRUE

Sensation is input about the physical world obtained by our sensory receptors, and perception is the process by which the brain selects, organizes, and interprets these sensations.