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. 2015 Jun 10;35(23):8938–8947. doi: 10.1523/JNEUROSCI.3936-14.2015

Figure 1.

Figure 1.

Structure and timeline of one trial of the experiment. An arrow cue indicating the target of the upcoming electric stimulation was followed by an anticipation cue indicating the intensity of the upcoming electric stimulus: orange flash represents painful; blue flash represents nonpainful. After a fixed interval of 3500 ms, a delivery cue (duration = 1000 ms) was presented concurrently with stimulus delivery (duration = 500 ms): red flash represents painful; green flash represents nonpainful. Afterwards, affect ratings were collected in approximately one-third of all trials.