Title

Graded Changes in Evoked Response (P300) Amplitude as a Function of Cognitive Activity

Document Type

Article

Publication Date

1973

Keywords

Graded function, Cortical processor

Digital Object Identifier (DOI)

http://dx.doi.org/10.3758/BF03212398

Abstract

Using a stepwise discriminant analysis, we demonstrate that the amplitude of P300 is a graded function of the complexity of information processing required of a S following a stimulus. This relationship between cognitive complexity and P300 is apparent only when the S is not pressed to generate fast and accurate discriminant responses to the stimuli. Under a reaction-time regime, a large P300 is elicited independently of stimulus predictability or cognitive complexity. It seems that P300 is a measure of the amount of activity of a general-purpose cortical processor.

Comments

http://download.springer.com/static/pdf/331/art%253A10.3758%252FBF03212398.pdf?auth66=1385655794_5b6f358b9d15cf79d0bc73e3512f6448&ext=.pdf

Was this content written or created while at USF?

No

Citation / Publisher Attribution

Donchin, E., Kubovy, M., Kutas, M., Johnson, R., Jr., & Herning, R. I. (1973). Graded changes in evoked response (P300) amplitude as a function of cognitive activity. Perception and Psychophysics, 14, 319-324.