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Neurology 2001;56:1389-1391
© 2001 American Academy of Neurology
Brief Communications

Differences in spatial acuity between digits

Francisco Vega–Bermudez, MD, PhD; and Kenneth O. Johnson, PhD

From the Zanvyl Krieger Mind/Brain Institute, Johns Hopkins University, Baltimore, MD.

Address correspondence and reprint requests to Dr. Francisco Vega–Bermudez, 338 Krieger Hall, Zanvyl Krieger Mind/Brain Institute, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218; e-mail: fvega{at}jhu.edu

The spatial acuity of the index, middle, and ring distal finger pads of eight right-handed men, aged 22 to 57 years, was measured by using gratings and raised letters. Acuity declined significantly from the index to the middle finger and from the middle to the ring finger. There were no significant differences between homologous fingers of the two hands. Letter recognition and grating orientation threshold measures were highly correlated.




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