The detection of physical energy emitted or reflected by physical objects; it occurs when energy in the external environment or the body stimulates receptors in the sense organs.
Specialized cells that convert physical energy in the environment or the body to electrical energy that can be transmitted as nerve impulses to the brain.
Doctrine of specific nerve energies
The doctrine that different sensory modalities, such as vision and hearing, exist because signals recieved by the sense organs stimulate different nerve pathways leading to different areas of the brain.
The smallest quantity of physical energy that can be reliable detected by an observer.
The smallest difference in stimulation that can be reliably detected by an observer when two stimuli are compared; also calles the just noticible difference.
A psychophysical theory that divides the detection of a sensory signal into a sensory process and a decision process.
The reduction or disapperance of sensory responsiveness that occurs when stimulation is unchanging or repetitious.
The focusing of attention on selected aspects of the environment and the blocking out of others.
Neural tissue that lines the back of the eyeball's interior and contains the receotirs for vision.
Neurons in the retina of the eye that gather information from receptor cells (by the way of intermediate bipolar cells); their axons make up the optic nerve.
Cells in the visual cortex that are sensitive to specific features of the environment.
A theory of color perception that proposes three mechanisms in the visual system, each sensitive to a certian range of wavelengths; their interaction is assumes to produce all the different experiences of hue.
A theory of color perception, which assumes that the visual system treats pairs of colors as opposing or antagonistic.
Principles that describe the brain's organization of sensory building blocks into meaningful units and patterns.
The slight difference in lateral seperation between two objects, as seen by the left eye and the right eye.
The accurate perception of objects as stable or unchanged despite changes in the sensory patterns they produce.
The dimension of auditory experience related to the frequency of a pressure wave; height or depth of a tone.
The distinguishing quality of a sound; the demension of auditory experience related to the complexity of the pressure wave.
The theory that the experience of pain depends in part on whether pain impulses get past a neurological "gate" in the spinal cord and thus reach the brain.
The theory that a matrix of neurons in the brain is capable of generating pain (and other sensations) in the absence of signals from sensory nerves.
Sense organs in the inner ear, which contribute to equilibrium by responding to rotation of the head.
The deminsion of visual experience specified by color names and related to the wavelength of light.
Lightness of luminance; the dimension of visual experience related to the amount of light emitted from or relected by an object.
Vividness or purity of color; the dimension of visual experience related to the complexity of light waves.
When an object is interposed between the viewer and a sencond object, partially blocking the view of the second object, the first object is percieved as being closer.
When two lines known to be parallel to appear to be coming together or converging, they imply the existance of depth.
When we need smething, have an interest in it, or want it, we are especially likely to percieve it.
What we hold to be true about the world can affect the interpretation of ambiguous sensory signals.
People who claim they can sens and recieve mesages about the world without relying on usual sensory channels.
Direct communication from one mind to another without the usual visual, auditory, and other sensory signals.