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Coding of different movement directions by a population of neurons in the motor cortex. Weighted vectorial contributions of individual cells (light purple lines) sum to yield a population vector (orange) which is congruent with the direction of movement (yellow). See page 1416. [The plot was produced using the Interactive Graphics Facility, Department of Biophysics, Johns Hopkins University, School of Medicine, Baltimore, MD 21205]


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Science. ISSN 0036-8075 (print), 1095-9203 (online)