Chapter 4 Notes
synesthesia(共感覺，副感覺): the perceptual experience of one sense that is
evoked by another sense.
sensation: simple stimulation of a sense organ.
perception: the organization, identification, and interpretation of a sensation in
order to form a mental representation.
transduction: what takes place when many sensors in a body convert physical
signals form the environment into encoded neural signals sent to the central
psychophysics: methods that measure the strength of a stimulus and the
observer’s sensitivity to that stimulus.
absolute threshold: the minimal intensity needed to just barely detect a stimulus.
signal detection theory: the response to a stimulus depends both on a person’s
sensitivity to the stimulus in the presence of noise and on a person’s decision
sensory adaptation: sensitivity to prolonged stimulation tends to decline over
time as an organism adapts to current conditions.
visual acuity: the ability to see fine detail.
retina: light-sensitive tissue lining the back of the eyeball.
three properties of light waves: length for color, amplitude for brightness