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. 2018 May 15;19:599–606. doi: 10.1016/j.nicl.2018.05.005

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© 2018 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig. 1 — HRF patterns in the temporal regions. (a) Location of 12 channels for each hemisphere. Each channel is represented by a number. Channels 1 to 12 are located on the left hemisphere (left) and channels 13 to 24 are located on the right hemisphere (right). (b, c) Representative examples of time courses of Hb changes. The typical HRF pattern is characterized by an increase in oxy-Hb and a slight decrease in deoxy-Hb (b), while the inverted pattern is characterized by a decrease in oxy-Hb (c).