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. 2015 Feb 6;9:11. doi: 10.3389/fnins.2015.00011

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Copyright © 2015 van Wassenhove and Grzeczkowski.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Time-frequency t-maps of DEV vs. STD contrasts as a function of sound location. Each graph reports the t-maps of the DEV minus STD time-frequency contrasts separately for the left and right hemispheres (left and right panels, respectively) and as a function of sound location. Top panels: ≪ LEFT ≫ are sounds presented to the left ear: t-maps report the contrast dAL minus AL irrespective of eye positions. During DEV trials, sounds presented to the left ear (dAL) elicited a significant increase of high-gamma power as compared to the same sounds during STD trials (AL). This was only observed in the contralateral auditory cortices, here the left hemisphere. Middle panels: ≪ CENTER ≫ are sounds presented to both ears: t-maps report the contrast dAC minus AC irrespective of eye positions. A significant increase of high-gamma power was observed in the right auditory cortices in DEV trials (dAC) as compared to STD trials (AC). Bottom panels: ≪ RIGHT ≫ are sounds presented to the right ear: t-maps report the contrast dAR minus AR. DEV sounds presented to the right ear (dAR) elicited a significant increase of high-gamma band power in the right auditory cortices as compared to STD trials. Additionally, a significant beta power decrease was observed in the left auditory cortices.