P100 and N200.

<p>A) P100 component at electrodes O1 and O2 and B) N200 at electrodes P9 and P10 for both conditions (walker, scramble) separately. Typically developing controls are indicated by solid lines and ADHD by dashed lines.</p

Late positive deflection.

<p>P400+ is shown at electrodes CPz, Pz, P1, P2, PO1 and PO2 (averaged) for the walker- and scrambled condition. Typically developing controls are indicated by solid lines and ADHD by dashed lines.</p

Example of experimental stimuli and stimuli presentation.

<p>Example of experimental stimuli and stimuli presentation.</p

Dipole analysis.

<p>A) Difference waves at surface electrodes Cz, P10 (right hemisphere) and P9 (left hemisphere) in typically developing controls (solid line) and ADHD (dashed line); B) Dipole localisation in the left (blue) and right (red) hemisphere; C) Dipole waves, displaying activity in the left and right occipito-temporal junction in typically developing controls (solid line) and ADHD (dashed line).</p

Descriptive data for typically developing controls (TC) and ADHD subjects.

<p>*different sample sizes because of missing questionnaires.</p

Topographic scalp maps.

<p>A) Maps for typically developing controls and B) for children and adolescents with ADHD in both experimental conditions and C) difference maps (walker – scramble) for both groups respectively.</p