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. Author manuscript; available in PMC: 2020 Mar 1.
Published in final edited form as: Epilepsy Behav. 2018 Dec 21;92:5–13. doi: 10.1016/j.yebeh.2018.11.031

Figure 1. Examples of EEG recordings showing generalized spike-wave discharges with impaired versus spared performance.

Figure 1.

On both the continuous performance task (CPT, A and B) and repetitive tapping task (RTT, C and D), generalized SWDs that resulted in impaired performance (A and C) lasted longer than those that spared performance (B and D). Shown here are out-of-scanner high-density EEG recordings with a limited number of channels shown for ease of viewing. Vertical lines indicate presentation of target letters during behavioral tasks. For CPT (A and B), the targets consisted of the letter “X” presented in a stream of other letters appearing once each second. For RTT (C and D), the targets consisted of any letter presented once each second. Durations of button presses are indicated by the heavy black horizontal lines. Reproduced with permission from Guo et al., Impaired consciousness in patients with absence seizures investigated by functional MRI, EEG, and behavioural measures: a cross-sectional study. Lancet Neurology, 2016; 15(13) 1336–1345.