Use has been made recently of a calendar chart for recording the seizures of individual patients with epilepsy. This chart is of familiar graph design, 11 by 17 inches, with 365 finely ruled ordinates, one for each day of the year. For ease in reading, heavier lines are used for every fifth day throughout each month, while the last day of each month is indicated by still heavier demarcation. Abscissas represent the time of day; horizontal lines in successive positions reading downward indicate fifteen minute intervals from 12: 01 a. m. to midnight; heavier lines are used for intervals of one hour and still heavier lines for intervals of six hours. The use of the heaviest lines for 6 a. m., noon and 6 p. m. makes it easy to identify the quarter of the day in which seizures occur. The twelve monthly division lines intersecting with the prominent horizontal
WHEELER T. GRAPHIC CHARTING METHOD FOR USE IN RECORDING SEIZURES OF PATIENTS WITH EPILEPSY. Arch NeurPsych. 1936;35(4):776–781. doi:10.1001/archneurpsyc.1936.02260040084005
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