01:830:101 Chapter Notes - Chapter 3: Middle Ear, Actual Size, Basilar Membrane

• School: Rutgers University
• Department: Psychology
• Course: 01:830:101
• Professor: Carl Persing

Document Summary

Most of the processes that underlie visual sensation occur in the eye and in subcortical structures of the brain, before the neural signals reach the cerebral cortex. Psychophysics: study the relation between physical events and the corresponding experience of those events. Threshold: stimulate cross this when they activate receptor cells strongly enough to be sensed. Absolute threshold: (the smallest amount of stimulation needed in order to detect that the stimulus is present) the magnitude of the stimulus needed, on average, to allow an observer to detect it half the time that it is present. Weber s law: the same percentage of the magnitude must be present in order to detect a difference between two stimuli or a change in a single stimulus. Frequency: the number of waves arriving each second. Wavelength: the distance between the peaks of the waves. Transduction: the conversion from electromagnetic energy that is light, into neural signals.