COGNITO - Inserm

5. VISUAL ATTENTION
The subject is shown a shape for
2 seconds then a screen with
variations on this shape of which
two are the same. The subject
must visually locate and touch
the two similar shapes. When
the subject touches the correct
shape it changes from red to
blue. If a change of colour does
not occur the subject should be
asked to touch with a larger
surface of the fingertip. Two
practice trials are given.
10 trials are given. If the subject
does not respond within 30
seconds then this is scored a
Time error and the next trial is
given. If the subject touches the
wrong shape then corrects the
response this is scored as a
Correction.
The following will appear in the
Results file:
- Number of correct trials
- Number of incorrect
trials
- Number of Time errors
- Number of nonresponses
- Time taken for each trial
- Mean time for the first
shape all trials
- Mean time for the
second shape all trials
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