Chapter 5- Sensation and Perception Flashcards
Absolute Threshold
Minimum amount of stimulus energy that must be present for the stimulus to be detected 50% of the time
Afterimage
Continuation of a visual sensation after removal of the stimulus
Amplitude
Height of a wave
Basilar Membrane
Thin strip of tissue within the cochlea that contains the hair cells which serve as the sensory receptors for the auditory system
Binaural Cue
Two-eared cue to localize sound
Binocular Cue
Two-eared cue to localize sound
Binocular Disparity
Slightly different view of the world that each eye receives
Blind Spot
point where we cannot respond to visual information in that portion of the visual field
Bottom-Up Processing
System in which perceptions are built from sensory input
Closure
Organizing our perceptions into complete objects rather than as a series of parts
Cochlea
Fluid-filled, snail-shaped structure that contains the sensory receptor cells of the auditory system
Cochlear Implant
Electronic device that consists of a microphone, a speech processor, and an electrode array to directly stimulate the auditory nerve to transmit information to the brain
Conductive Hearing Loss
Failure in the vibration of the eardrum and/or movement of the ossicles
Cone
Specialized photoreceptor that works best in bright light conditions and detects color
Congenital Deafenss
Deafness from birth
Congenital Insensitivity to Pain (Congenital Analgesia)
Genetic disorder that results in the inability to experience pain
Cornea
Transparent covering over the eye
Deafness
Partial or complete inability to hear
Decibel (dB)
Logarithmic unit of sound intensity
Depth Perception
Ability to perceive depth
Electromagnetic Spectrum
All the electromagnetic radiation that occurs in our environment
Figure-Ground Relation
Segmenting our visual world into figure and ground
Fovea
Small indentation in the retina that contains cones
Frequency
Number of waves that pass a given point in a given time period
Gestalt Psychology
Field of psychology based on the idea that the whole is different from the sum of its parts
Good Continuation
(also, continuity) We are more likely to perceive continuous, smooth flowing lines rather than jagged, broken lines
Hair Cell
Auditory receptor cell of the inner ear
Hertz (Hz)
Cycles per second; measure of frequency
Inattentional Blindness
Failure to notice something that is completely visible because of a lack of attention
Incus
Middle ear ossicle; also known as the anvil
Inflammatory Pain
Signal that some type of tissue damage has occured
Interaural Level Difference
Sound coming from one side of the body is more intense at the closest ear because of the attenuation of the sound wave as it passes through the head
Interaural Timing Difference
Small difference in the time at which a given sound wave arrives at each ear
Iris
Colored portion of the eye
Just Noticeable Difference
Difference in stimuli required to detect a difference between the stimuli