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P300 latency and amplitude trajectories across the lifespan as obtained from the cross-sectional dataset. Dots represent scores from individual participants. From From P300 Development across the Lifespan: A Systematic Review and Meta-Analysis. [1] The latency and amplitude of the P300 response may vary as a function of age.
ERPs are used extensively in neuroscience, cognitive psychology, cognitive science, and psycho-physiological research. Experimental psychologists and neuroscientists have discovered many different stimuli that elicit reliable ERPs from participants. The timing of these responses is thought to provide a measure of the timing of the brain's ...
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 ...
Amplitude is the size (magnitude) of the pressure variations in a sound wave, and primarily determines the loudness with which the sound is perceived. In a sinusoidal function such as C sin ( 2 π f t ) {\displaystyle C\sin(2\pi ft)} , C represents the amplitude of the sound wave.
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 ...
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 ...
Stevens' power law is an empirical relationship in psychophysics between an increased intensity or strength in a physical stimulus and the perceived magnitude increase in the sensation created by the stimulus.
The latency, amplitude, and distribution of the N200 are sensitive to several factors depending on the type of experiment. The N200 is often seen as part of a complex of components including the P3a and P3b. The N200 component responds functionally much like the P3b component in that stimulus probability can affect the amplitude of both. This ...