(1) saccade, in which ocular movements were performed according to the displacement of a fixation cross from the center towards peripheral points in the image displayed;
(2) mimicry of object grasping with right hand, in which the corresponding object was displayed on the screen;
(3) mimic orientation of rhombus, displayed as image background on the screen
Tasks of conditions (2) and (3) were featured by the same visual stimuli in order to capture grasping-specific activity, using
right hand along with fingers;
(4) mental judgement on the left-right direction of a hand displayed as visual stimulus; and
(5) mental judgement on the palmar-dorsal direction of a hand displayed as visual stimulus.
The first three aforementioned conditions contained one active condition. In contrast, the forth and fifth blocks included two active conditions, referring each one to the relative directions of the hand represented.
No relations have yet been associated.
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).