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A version of the continuous performance task in which subjects are told to make one response for the letter X when it was preceded by the letter A, and another response for all other stimuli. AX trials are "target trials"; in these types of trials a valid cue is followed by a valid probe. The 3 other trial types are "Non-target trials" in which either a valid cue is followed by an invalid probe ("AY" type trials) or an invalid cue is followed by either a valid or invalid probe ("BX" or "BY" probes, respectively).
Synonyms: Continuous performance Test - AX version
Definition contributed by CWhite about two years ago

Descendant of: Penn continuous performance taskContinuous Performance Task
Progenitor of: AX-DPX
AX-CPT task has been asserted to measure the following CONCEPTS
as measured by the contrast:
  • Please add a contrast




as measured by the contrast:
  • Please add a contrast




as measured by the contrast:
  • Please add a contrast




as measured by the contrast:
  • Please add a contrast




as measured by the contrast:
  • Please add a contrast




DISORDERS associated with AX-CPT task
No associations have been added.


IMPLEMENTATIONS of AX-CPT task
No implementations have been added.
EXTERNAL DATASETS for AX-CPT task
No external datasets have been added.
CONDITIONS

Experimental conditions are the subsets of an experiment that define the relevant experimental manipulation.

CONTRASTS

In the Cognitive Atlas, we define a contrast as any function over experimental conditions. The simplest contrast is the indicator value for a specific condition; more complex contrasts include linear or nonlinear functions of the indicator across different experimental conditions.

INDICATORS

An indicator is a specific quantitative or qualitative variable that is recorded for analysis. These may include behavioral variables (such as response time, accuracy, or other measures of performance) or physiological variables (including genetics, psychophysiology, or brain imaging data).


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Term History

REVISION 2

Definition contributed by CTorgerson about four years ago:A version of the continuous performance task in which subjects are told to make one response for the letter X when it was preceded by the letter A, and another response for all other stimuli. AX trials are "target trials"; in these types of trials a valid cue is followed by a valid probe. The 3 other trial types are "Non-target trials" in which either a valid cue is followed by an invalid probe ("AY" type trials) or an invalid cue is followed by either a valid or invalid probe ("BX" or "BY" probes, respectively).

REVISION 1

Definition contributed by RPoldrack about seven years ago:A version of the continuous performance task in which subjects are told to make one response for the letter X when it was preceded by the letter A, and another response for all other stimuli.

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Term Bibliography

Continuous Performance Test - AX
Cogtest website
Citation added by CWhite about two years ago
Citation Profile

The continuous performance test: a window on the neural substrates for attention?
Riccio CA, Reynolds CR, Lowe P, Moore JJ
(Arch Clin Neuropsychol)
2002 Apr
Citation added by MTodd about eight years ago
Citation Profile

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