PSY 1001 Chapter Notes - Chapter 4: Color Vision, Cornea, Subjective Constancy
Document Summary
Transduction: the process of converting an external energy or substance, like light or sound, into electrical activity within neurons. Sense receptor: specialized cell responsible for converting external stimuli into neural activity for a specific sensory system. Sensory adaptation: activation is greatest when a stimulus is first detected. Psychophysics: study of how we perceive sensory stimuli based on their physical characteristics. Absolute threshold: lowest level of a stimulus needed for the nervous system to detect a change 50% of the time. Just noticeable difference (jnd): smallest change in the intensity of a stimulus that we can detect. Weber"s law: there is a constant proportional relationship between the jnd and original stimulus intensity. Signal detection theory: stimuli are detected under different conditions, john. Response biases: tendencies to make one type of guess over another when in doubt about whether a weak signal is present or absent under noisy conditions.
