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. 2007 May 8;5(6):e138. doi: 10.1371/journal.pbio.0050138

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© 2007 Slagter et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A–C) Brain potentials from electrode Pz, time-locked to T1 onset as a function of Session (time 1 or time 2) and Group (novices or practitioners), shown separately for (A) short-interval T2-present no-blink trials, (B) long-interval T2-present no-blink trials, and (C) short-interval T2-absent trials. Yellow bars indicate the time windows in which the reduction in brain potential over time was significant in the time window of the T1-elicited P3b (p < 0.05).

(D) The T1-locked change in brain potentials over time in practitioners from electrode Pz, shown separately for short-interval T2-present no-blink trials, long-interval T2-present no-blink trials, and short-interval T2 absent trials. The scalp maps show electrode sites where the change in T1-evoked P3b over time was significant between 380 and 400 ms, separately for each trial type. These data confirm that intensive mental training was associated with a selective reduction in T1-evoked P3b amplitude around 400 ms.