Ch 1 Flashcards
(51 cards)
The ability to detect a stimulus and, perhaps, to turn that detection into a private experience
Sensation
The act of giving meaning to a detective to sensation
Perception
In Philosophy, private conscious experience of sensation or perception
Quality
The idea that the mind has and existence separate from the body
Dualism
The idea that the mind exists as a property of all matter that is, that all matter has consciousness
Panpsyism
The science of defining quantitative relationships between physical and psychological events
Psychophysics
The minimum distance at which to stimuli are just perceptible as separate
Two point Touch threshold
The smallest detectable difference between two stimuli, what is the minimum change in a stimulus that enables it to be correctly judged as different from a reference stimulus
Just noticeable differenceor difference threshold
The constant of proportionality in Webbers law
Weber fraction
Depreciable describing the relationship between stimulus and resulting sensation that says the just noticeable difference is a constant fraction of the comparison stimulus
Webers law
The principal describing the relationship between stimulus and resulting sensation that says the magnitude of subjective sensation increase his proportionately to the logarithm of the stimulus intensity
Fletcher’s law
The minimum amount of simulation necessary for a person to detect a stimulus 50% of the time
Absolute threshold
A psycho physical method in which many stimuli, ranging from rarely to almost always perceivable are presented one of the time. participants respond to each presentation: “Yes/no” “same/different” and so on
Method of constant stimuli
A psychophysical method in which the particular dimension of a stimulus, or the difference between two stimuli, is varied incrementally until the participant responds differently
Method of limits
A method of limits in which the subject controls the change in the stimulus
Method of adjustment
A psychophysical method in which the participant assigns values according to perceived magnitudes of the stimuli
Magnitude estimation
A printable describing the relationship between stimulus and resulting sensation that says the magnitude of subjective sensation is proportional to the stimulus magnitude raised to an exponent
Stevens power law
The ability to match the intensities of sensations that come from different sensory modalities. The ability allows insight into sensory differences. For example, a listener might adjust the brightness of the light until it matches the loudness of a tone
Cross modality matching
Super tasters are those individuals who experience the most intense tasting station; for some stimuli, they are dramatically more intense than the medium tasters or non-tasters. Super tasters also tend to experience more intense or Oral burn and oral touch sensation
Super taster
A psychophysical theory that quantifies the response of an observer to the presentation of a signal in the presence of noise measures obtain from a series of presentations are sensitivity and criterion of the observer
Signal detection theory
In signal detection theory, and internal threshold that is set by the observer. If the internal responses above criterion, the observer gives one response. Below criterion, the observer gives another response.
Criterion
In signal detection theory, a value that defines the ease with which in observer can tell the difference between the presence and absence of a stimulus or the difference between stimulus one and stimulus two
Sensitivity
In studies of signal detection, the graphical plot of the hit rate as a function of the false alarm rate. If these are the same, points fall on the diagonal, indicating that the observer cannot tell the difference between the presence and absence of the signal. As the observer sensitivity increases the curve bows upward toward the upper left corner. That Point represents a perfect ability to distinguish signal from noise
Receiver operating characteristics curve
A simple, smoothly changing oscillation that repeats across space. Higher frequency sine waves have more oscillation and lower frequencies have fewer oscillations over a given distance. Example one in hearing, a waveform for which variation as a function of time is a sign function also called . Pure tone. Example 2 Envision a pattern for whichvariations in property like brightness or color as a function of space is a sign function
Sine waves