Figure 1.

Topographic maps of the interactions in the theta power spectrum (4–7 Hz) in the different analyses. (A) Topographic map of the comparison between computer vs. real chess context. Differences were not found (p > 0.05). (B) Topographic map of the comparison between computer vs. real chess context in those participants who were familiarized with playing chess with computer. Differences were not found (p > 0.05). (C) Topographic map of the comparison between computer vs. real chess context in those participants who were not familiarized with playing chess with computer. Differences were located (p < 0.05) in F3, Fz, F4, Cz, T3, T4, Pz, P4, O1, and O2, showing higher values of theta while playing in a real chess environment.