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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Neuroimage. 2008 Jun 12;42(3):1110–1117. doi: 10.1016/j.neuroimage.2008.05.060

Figure 4.

Figure 4

Normalized BOLD integral as a function of ISI in LGN and V1. At both ROIs, BOLD responses are significantly suppressed (i.e., below the reference line) at ISIs of < 1 second. When ISI gets longer, BOLD suppression at both ROIs gradually becomes smaller. Suppression in V1 BOLD activity completely disappears when ISI ≥ 1 second, whereas BOLD suppression in LGN sustains for even longer ISIs. V1 activity also shows a short period (~ 1 s) of facilitation (i.e., above the reference line) after ISI > 1 second.

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