Template:FeedbackTaskParams

From BCI2000 Wiki
Jump to: navigation, search

PreRunDuration

The duration of the pause preceding the first trial. Given in sample blocks, or in time units when immediately followed with 's', 'ms', or similar.

PreFeedbackDuration

The duration of target display before feedback begins. Given in sample blocks, or in time units when immediately followed with 's', 'ms', or similar.

FeedbackDuration

Typical duration of feedback. Given in sample blocks, or in time units when immediately followed with 's', 'ms', or similar.

This parameter is not a hard limit to feedback duration but determines cursor speed such that, for a normalized control signal, cursor movement will take the specified time from the cursor's starting point to the screen's edge. Feedback trials will typically have this duration, provided that the cursor starts at the center of the screen, targets are located at the screen's edges, and ignoring cursor and target width (for further details, see User Reference:Normalizer).

PostFeedbackDuration

The duration of result display after feedback. Given in sample blocks, or in time units when immediately followed with 's', 'ms', or similar.

ITIDuration

The duration of the inter-trial interval. Given in sample blocks, or in time units when immediately followed with 's', 'ms', or similar.

NumberOfTrials

The number of trials in a run. If this parameter is set, then MinRunLength should be blank, and vice-versa.

MinRunLength

The duration of a run, i.e. the time corresponding to a continuously recorded data file. A run will not stop during a trial, so its actual length may be larger than this value by the length of a trial. If this parameter is set, then NumberOfTrials should be blank, and vice-versa. Given in sample blocks, or in time units when immediately followed with 's', 'ms', or similar.

NumberTargets

The number of targets on the feedback screen.

TargetSequence

A list of indices, each one being from 1 to NumberTargets. This list specifies an optional fixed sequence of stimuli, through which the presentation will cycle. Leave this parameter blank if you want the default behavior, which is for stimuli to be selected randomly.