The student developed “shock-like contractions” in both the mouth muscles when trying to talk and in his legs when he would try to walk. Weeks later while the student, who is right-handed, was attempting to solve Sudoku puzzles, he developed the clonic seizures in his left arm. The seizure stopped immediately after the student stopped solving the Sudoku puzzle. He also noticed the same occurrence while performing visuo-spatial tasks.
To find out what was happening,