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A task in which participants view a continuous stream of letter stimuli. The object of the task is to identify letter repetitions that occur n-trials preceding to the current stimulus.



Definition contributed by Anonymous
letter n-back task has been asserted to measure the following CONCEPTS
as measured by the contrast:

Phenotypes associated with letter n-back task


No associations have been added.


No associations have been added.


No associations have been added.

IMPLEMENTATIONS of letter n-back task
No implementations have been added.
EXTERNAL DATASETS for letter n-back task
No implementations have been added.

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


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.


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).


Task analysis complements neuroimaging: an example from working memory research.
Meegan DV, Purc-Stephenson R, Honsberger MJ, Topan M
NeuroImage (Neuroimage)
2004 Mar