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the amplitude of the EEG response became attenuated, or habituated when the warning stimulus was repeated without a subsequent imperative stimulus; the amplitude returned when the imperative stimulus followed the warning stimulus; amplitude was more prominent in situations where the subject could exert control by preventing the imperative stimulus.
Psychology Today is an American media organization with a focus on psychology and human behavior. The publication began as a bimonthly magazine, which first appeared in 1967. The print magazine's reported circulation is 275,000 as of 2023. [ 2 ]
Examples of sinusoidally amplitude- and frequency-modulated signals. The neural representation of stimulus envelope, ENV n, has typically been studied using well-controlled ENV p modulations, that is sinusoidally amplitude-modulated (AM) sounds. Cochlear filtering limits the range of AM rates encoded in individual auditory-nerve fibers. In the ...
The P3b has been a prominent tool used to study cognitive processes, especially psychology research on information processing. Generally speaking, improbable events will elicit a P3b, and the less probable the event, the larger the P3b amplitude. [10] This was shown to be true both for the overall probability and for the local probability. [2]
Psychophysics quantitatively investigates the relationship between physical stimuli and the sensations and perceptions they produce. Psychophysics has been described as "the scientific study of the relation between stimulus and sensation" [1] or, more completely, as "the analysis of perceptual processes by studying the effect on a subject's experience or behaviour of systematically varying the ...
The N400 amplitude seen to the target word (honey) will be reduced upon repetition due to semantic priming. [1] The amount of reduction in amplitude can be used to measure the degree of relatedness between the words. Another widely used experimental task used to study the N400 is sentence reading. In this kind of study, sentences are presented ...
There are many kinds, generally written as A-B coupling, meaning the A of a slow wave is coupled with the B of a fast wave. For example, phase–amplitude coupling is where the phase of a slow wave is coupled with the amplitude of a fast wave. [70] The theta-gamma code is a coupling between theta wave and gamma wave in the hippocampal network ...
Prepulse inhibition: preceding stimulus attenuates the startle response.. Prepulse inhibition (PPI) is a neurological phenomenon in which a weaker prestimulus (prepulse) inhibits the reaction of an organism to a subsequent strong reflex-eliciting stimulus (pulse), often using the startle reflex.