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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).
"I removed definition "subjects whistle" because it was redundant."
MLewis (about five years ago)
"Initial definition from the BrainMapLex.xls file located in the documentation section of: http://brainmap.org/scribe/index.html"
NPicchetti (about six years ago)
Definition contributed by MLewis about five years ago:participants are cued to inhale and to whistle at fixed intervalsREVISION 3
Definition contributed by MLewis about five years ago:REVISION 2
Definition contributed by BGregory about six years ago:Subjects whistle.REVISION 1
Definition contributed by BGregory about seven years ago:Subjects whistle. (from the BrainMapLex.xls file located in the documentation section of: http://brainmap.org/scribe/index.html)View Term Event Log