An example of spatial representation of post-stimulus interactions after targets between all investigated brain sites in one subject (No.7).

<p>Correlation results are arranged in the triangular matrices into groups according to brain structures (delimited by black lines)(D) and in graphic form of “glass brains” with linked pairs of investigated electrode contacts (A – Coronal, B – Sagittal, C – Axial). Matrix values and links are colored according to the percentage of duration of the increase (red) or decrease (blue) in cross-correlations within time window 250–750 ms after stimulation. Three selected frequency bands – δ (left panel), β (middle panel), and upper γ (right panel).</p

Matrices with significant correlation changes in three subjects; three frequency bands – δ (2–4 Hz), β (12–20 Hz), and upper γ (55–95 Hz), and two different stimuli – targets vs.frequents, for monopolar and bipolar montages.

<p>The correlation increase is highlighted in red, decrease in blue. Each colored line corresponds to changes in a contact pair in time (notice all pairs of investigated subject’s contacts are represented in individual matrices for each patient). Green vertical lines define interval 250–750 ms after stimuli.</p

Relative incidences of significant post-stimulus changes in inter-areal cross-correlations (A – monopolar; B – bipolar) and post-stimulus power changes (C – monopolar; D – bipolar) across all investigated subjects.

<p>Statistical significance of target/frequent differences is indicated by asterisks.</p

Timing of significant post-target cross-correlation increases across all subjects and areas.

<p>The duration was determined as the mean level of corresponding changes over contact pairs, and the occurrence was given as the center of changes.</p

Patient characteristics.

a<p>T, temporal; F, frontal; P, parietal; O, occipital; R, right; L, left; HS, hippocampal sclerosis; FCD, focal cortical displasia; DNET, dysembryoplastic neuroepitelial tumour; EMC, encephalomeningocele.</p

Spatial distribution of couplings/decouplings across all investigated subjects, in the time window 250–750 ms after targets.

<p>Three orthogonal views of a transparent “glass brain”; links are colored according to the percentage of duration of the increase (red) or decrease (blue) in cross-correlations within time window 250–750 ms after stimulation. Three selected frequency bands – δ (left panel), β (middle panel), and upper γ (right panel).</p

Temporal characteristics of significant cross-correlation changes after targets for monopolar (A) and bipolar montages (B).

<p>Standard deviations are given in brackets.</p