Ch.4 Vocabulary

the minimum amount of difference that can be detected between two
stimuli

• Absolute Threshold

• Signal-Detection Theory

• Difference Threshold

• Sensation

is the weakest amount of a stimulus that can be sensed

• Absolute Threshold

• Difference threshold

• Signal-Detection Theory

• Perception

is a method of distinguishing sensory stimuli that takes into account
not only their strengths but also such elements as the setting, your physical state, your mood,
and your attitude

• Sensation

• Signal-Detection Theory

• Sensory Adaptation

• Perception

is the psychological process through which we interpret sensory stimulation

• Sensation

• Sensory Overload

• Signal-Detection Theory

• Perception

opening in the eye that determines the amount of light that enters the eye

• Iris

• Pupil

• Cornea

• Retina

structure of the eye that adjusts to the distance of objects by changing its thickness

• Lens

• Retina

• Cornea

• Optic Nerve

the stimulation of sensory receptors and the transmission of sensory information to
the central nervous system

• Touch

• Perception

• Sensation

• Taste

the process by which we become more sensitive to weak stimuli and
less sensitive to unchanging stimuli

• Perceptual Adaptation

• Adaptation

• Signal-Detection Theory

• Sensory Adaptation

Structure of the eye lacking photoreceptors

• Blind spot

• Retina

• Fovea

• Lens

neurons that are sensitive to light, and send the visual input to the brain

• Sensory Receptors

• Photoreceptors

• Glial Cells

• Rods