PMC4589672_01
Photo of ECoG grids placed on the brain cortex surface. (A) Grid photo of Subject P0, the black circle indicates the resection cortex of brain tumor; (B) Grid photo of Subject P1.
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F1
Subject P1 (male, 14 years old), P2 (male, 30) suffered from intractable epilepsy, and they underwent temporary placement of a subdural electrode array in order to localize the epileptic seizure focus and map brain function prior to surgical resection (Figure 1B).
The full run experiment of subject P1. T1, hand unfold; T2, hand grasp; T3, thumb-finger motion; T4, wrist motion; T5, index-finger motion. Each trial lasts 5 s, thereby 50 s were needed for the full run.
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F2
Each run contained 5 trials which indicated different hand motion types (Figure 2), i.e., hand unfold (T1), hand grasp (T2), thumb-finger motion (T3), wrist motion (T4), and index-finger motion (T5).
Full run experiment of subject P3, P4. RUN I, hand grasp; RUN II, thumb-finger motion; III, index-finger motion. Each run contained 20 trials, each trial lasts 4~6 s.
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F3
Three motion types were performed in separate run (Figure 3), i.e., run I for hand grasp, run II for thumb-finger motion and run III for index-finger motion.