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HSP Key Terms 1

Action Motor activities such as moving the head or eyes and locomotion through the environment. Action is one of the major outcomes of the perceptual process.
Agnosia the inability to recognize objects
Attended stimulus the stimulus that is being attended by a person at a given point in time.
Bottom-up processing (data-based processing) processing in which a person constructs a perception by analyzing the info falling on the receptors
Classical psychophysical methods the methods of limits, adjustment, and constant stimuli, described by Fechner that are used for measuring thresholds
Cognitive influences on perception how the knowledge, memories, and expectations that a person brings to a situation influence his or her perception.
Difference threshold The minimal detectable difference between two stimuli
Environmental stimulus all of the things in our environment that we can potentially perceive at a given point in time
Knowledge any information that the perceiver brings to a situation
Level of analysis the idea that we can observer processes at different scales. Perception can be studied at the psychophysical and physiological levels
Magnitude estimation a psychophysical method in which the subject assigns numbers to a stimulus that are proportional to the subjective magnitude to the stimulus
Method of adjustment a psychophysical method in which the experimenter or observer adjusts the stimulus intensity in a continuious manner until observer detects the stimulus
Method of constant stimuli a psychophysical method in which a number of stimuli with different intensities are presented repeatedly in a random order
Method of limits a psychophysical method for measuring threshold in which the experimenter presents stimuli in alternating ascending and descending order
Neural processing operations that transform electrical signals within a network of neurons or that transform the response of individual neruons
Perception conscious sensory experience
Perceptual process a sequence of steps leading from the environment to perception of a stimulus, recognition of the stimulus, and action with regard to the stimulus
Phenomenological method method of determining the relationship between stimuli and perception in which the observer descrigbes what he or she percieves
Physiological level of analysis analyzing perception by determining how a person's perception is related to physiological process that are occuring within the person
Power function a mathermatical function of the form P=KSn where P is perceived mag, K is a constant, and S is the stimulus intensity, and n is an exponent
Psychophysical level of analysis analyzing perception by determining how a person's perception is related to stimuli in the environment
Psychophysics quantitative methods for measuring the relationship between properties of the stimulus and the subj. experience.
Rat-man demo "ratlike" or "manlike" picture influences an observer's perception of a second picture which can bet interpreted as both
Reaction time the time btwn presentation of a stimulus and an observer's response to the stimulus
Recognition the ability to place an object in a category that gives it meaning (red object = tomato)
Response compression the result when doubling the physical intensity of a stimulus less than doubles the sebjective mag. Of stimulus
Response expansion result when doubling physical intensity of a stimulus more than doubles the subj. mag. Of stimulus
Stevens’s power law A law concerning the relationship btwn physical intensity of a stimulus and the perception of the subjective magnitude of stimulus P=KSn
Top-down processing (knowledge-based processing) Processing that starts with the analysis of high-level information such as knowledge a person brings to a situation.
Transduction the transformation of environmental energy into electrical energy (retinal receptors transduce light energy into electrical energy)
Visual search procedure in which a person's task is to find a particular element in a display that contains a number of elements
Weber fraction the ratio of the difference threshold to the value of the standard stimulus in weber's law
Weber’s law the ratio of the difference threshold to the value of stimulus is constant.
Absolute threshold the minimum stimulus energy necessary for an observer to detect a stimulus
Action Motor activities such as moving the head or eyes and locomotion through the environment. Action is one of the major outcomes of the perceptual process.
Agnosia the inability to recognize objects
Attended stimulus the stimulus that is being attended by a person at a given point in time.
Bottom-up processing (data-based processing) processing in which a person constructs a perception by analyzing the info falling on the receptors
Classical psychophysical methods the methods of limits, adjustment, and constant stimuli, described by Fechner that are used for measuring thresholds
Cognitive influences on perception how the knowledge, memories, and expectations that a person brings to a situation influence his or her perception.
Difference threshold The minimal detectable difference between two stimuli
Environmental stimulus all of the things in our environment that we can potentially perceive at a given point in time
Knowledge any information that the perceiver brings to a situation
Level of analysis the idea that we can observer processes at different scales. Perception can be studied at the psychophysical and physiological levels
Magnitude estimation a psychophysical method in which the subject assigns numbers to a stimulus that are proportional to the subjective magnitude to the stimulus
Method of adjustment a psychophysical method in which the experimenter or observer adjusts the stimulus intensity in a continuious manner until observer detects the stimulus
Method of constant stimuli a psychophysical method in which a number of stimuli with different intensities are presented repeatedly in a random order
Method of limits a psychophysical method for measuring threshold in which the experimenter presents stimuli in alternating ascending and descending order
Neural processing operations that transform electrical signals within a network of neurons or that transform the response of individual neruons
Perception conscious sensory experience
Perceptual process a sequence of steps leading from the environment to perception of a stimulus, recognition of the stimulus, and action with regard to the stimulus
Phenomenological method method of determining the relationship between stimuli and perception in which the observer descrigbes what he or she percieves
Physiological level of analysis analyzing perception by determining how a person's perception is related to physiological process that are occuring within the person
Power function a mathermatical function of the form P=KSn where P is perceived mag, K is a constant, and S is the stimulus intensity, and n is an exponent
Psychophysical level of analysis analyzing perception by determining how a person's perception is related to stimuli in the environment
Psychophysics quantitative methods for measuring the relationship between properties of the stimulus and the subj. experience.
Rat-man demo "ratlike" or "manlike" picture influences an observer's perception of a second picture which can bet interpreted as both
Reaction time the time btwn presentation of a stimulus and an observer's response to the stimulus
Recognition the ability to place an object in a category that gives it meaning (red object = tomato)
Response compression the result when doubling the physical intensity of a stimulus less than doubles the sebjective mag. Of stimulus
Response expansion result when doubling physical intensity of a stimulus more than doubles the subj. mag. Of stimulus
Stevens’s power law A law concerning the relationship btwn physical intensity of a stimulus and the perception of the subjective magnitude of stimulus P=KSn
Top-down processing (knowledge-based processing) Processing that starts with the analysis of high-level information such as knowledge a person brings to a situation.
Transduction the transformation of environmental energy into electrical energy (retinal receptors transduce light energy into electrical energy)
Visual search procedure in which a person's task is to find a particular element in a display that contains a number of elements
Weber fraction the ratio of the difference threshold to the value of the standard stimulus in weber's law
Weber’s law the ratio of the difference threshold to the value of stimulus is constant.
Absolute threshold the minimum stimulus energy necessary for an observer to detect a stimulus
Action Motor activities such as moving the head or eyes and locomotion through the environment. Action is one of the major outcomes of the perceptual process.
Agnosia the inability to recognize objects
Attended stimulus the stimulus that is being attended by a person at a given point in time.
Bottom-up processing (data-based processing) processing in which a person constructs a perception by analyzing the info falling on the receptors
Classical psychophysical methods the methods of limits, adjustment, and constant stimuli, described by Fechner that are used for measuring thresholds
Cognitive influences on perception how the knowledge, memories, and expectations that a person brings to a situation influence his or her perception.
Difference threshold The minimal detectable difference between two stimuli
Environmental stimulus all of the things in our environment that we can potentially perceive at a given point in time
Knowledge any information that the perceiver brings to a situation
Level of analysis the idea that we can observer processes at different scales. Perception can be studied at the psychophysical and physiological levels
Magnitude estimation a psychophysical method in which the subject assigns numbers to a stimulus that are proportional to the subjective magnitude to the stimulus
Method of adjustment a psychophysical method in which the experimenter or observer adjusts the stimulus intensity in a continuious manner until observer detects the stimulus
Method of constant stimuli a psychophysical method in which a number of stimuli with different intensities are presented repeatedly in a random order
Method of limits a psychophysical method for measuring threshold in which the experimenter presents stimuli in alternating ascending and descending order
Neural processing operations that transform electrical signals within a network of neurons or that transform the response of individual neruons
Perception conscious sensory experience
Perceptual process a sequence of steps leading from the environment to perception of a stimulus, recognition of the stimulus, and action with regard to the stimulus
Phenomenological method method of determining the relationship between stimuli and perception in which the observer descrigbes what he or she percieves
Physiological level of analysis analyzing perception by determining how a person's perception is related to physiological process that are occuring within the person
Power function a mathermatical function of the form P=KSn where P is perceived mag, K is a constant, and S is the stimulus intensity, and n is an exponent
Psychophysical level of analysis analyzing perception by determining how a person's perception is related to stimuli in the environment
Psychophysics quantitative methods for measuring the relationship between properties of the stimulus and the subj. experience.
Rat-man demo "ratlike" or "manlike" picture influences an observer's perception of a second picture which can bet interpreted as both
Reaction time the time btwn presentation of a stimulus and an observer's response to the stimulus
Recognition the ability to place an object in a category that gives it meaning (red object = tomato)
Response compression the result when doubling the physical intensity of a stimulus less than doubles the sebjective mag. Of stimulus
Response expansion result when doubling physical intensity of a stimulus more than doubles the subj. mag. Of stimulus
Stevens’s power law A law concerning the relationship btwn physical intensity of a stimulus and the perception of the subjective magnitude of stimulus P=KSn
Top-down processing (knowledge-based processing) Processing that starts with the analysis of high-level information such as knowledge a person brings to a situation.
Transduction the transformation of environmental energy into electrical energy (retinal receptors transduce light energy into electrical energy)
Visual search procedure in which a person's task is to find a particular element in a display that contains a number of elements
Weber fraction the ratio of the difference threshold to the value of the standard stimulus in weber's law
Weber’s law the ratio of the difference threshold to the value of stimulus is constant.
Absolute threshold the minimum stimulus energy necessary for an observer to detect a stimulus
Created by: 208102291