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. 2015 Sep 28;3(9):e12422. doi: 10.14814/phy2.12422

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© 2015 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of the American Physiological Society and The Physiological Society.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Task schematic and apparatus. (A) Auditory decision-making task. Subjects are instructed to signal whether the tone was high or low compared to an explicitly provided threshold tone with hand opening or closing, respectively. They are then presented with a random tone (Epoch 1, 200 msec) and are given 3.5 sec to respond (Epoch 2). Subjects are subsequently given verbal feedback for 2.7 sec about the correct response (Epoch 3) and have a 1.5 sec rest period before the next tone (Epoch 4). (B) Experimental Apparatus. The apparatus consisted of a presentation computer, headphones, a microelectrode, a neural signal processor, and an infrared camera to record subject response. Although not pictured, the auditory cues and motor responses were also recorded on the same computer for offline analysis.