25 young adult Ss were used in a study of asymmetry in spatial discrimination on the two sides of the tongue. 10 two-point limen values were established on the left and right tongue margins of each S. Analysis showed statistical evidence of asymmetry in spatial discrimination ability in 14 of the 25 Ss, supporting the concept that “sensory sidedness” in the tactile sensory system may be a normal neurological phenomenon.
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