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. Author manuscript; available in PMC: 2014 Mar 19.
Published in final edited form as: Am J Drug Alcohol Abuse. 2013 Nov;39(6):356–364. doi: 10.3109/00952990.2013.818680

Figure 2.

Figure 2

Spatial working memory task design. The spatial working memory task consists of 18 20-sec blocks alternating between experimental (spatial working memory) and baseline (vigilance) conditions. In both conditions, stimuli were presented for 1000 ms, and each interstimulus interval is 1000 ms (20 sec/block, repetition time (TR) = 3000 ms, 156 repetitions).