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. 2013 Oct 24;4:786. doi: 10.3389/fpsyg.2013.00786

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Copyright © 2013 Hummel, Olgun, Gerber, Huchel and Frasnelli.

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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Comparison of an ambroxan containing mixture with a mixture which does not contain ambroxan in subjects who perceive ambroxan (left) and subjects who do not perceive ambroxan (right). Area in cross hairs: right cingulate. Contrast left: SEN[MIX + AMB] vs. SEN[MIX] masked with [AMB + MIX+AMB + MIX] vs. CON; y = −28; Contrast right: INS[MIX + AMB] vs. INS[MIX] masked with [AMB + MIX+AMB + MIX] vs. CON; y = −13.