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48,410 items of data are available, covering 43,798 participants. Some values have special meanings defined by Data-Coding 1317. Defined-instances run from 2 to 3, labelled using Instancing 2. Units of measurement are Units.
Mean = 0.723879
Std.dev = 3.13239
61 items below graph minimum of -9.9694
72 items above graph maximum of 11.6607
Counts of participants/items last updated 19 Jul 2022.
The exact location of the head and the radio-frequency receive coil in the scanner can affect data quality and imaging-derived phenotypes. To help account for variations in position in different scanned participants, several variables have been generated which describe aspects of the positioning and can be used as "confounding variables" - for example they might be regressed out of brain phenotypes before carrying out correlations between these and non-imaging variables.
The lateral brain position is the X-co-ordinate (left-right) of the centre of the brain mask within the scanner.