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Fig. 4. Analysis of pointing pathways. (A) The manubrium (m) is at rest. (B) It points to a stimulus (s) located at the junction of a radial strand with the margin. (C) The stimulus was delivered interradially. (D) After cutting all radial strands, stimuli cease to evoke pointing. (E) After cutting six adjacent strands, stimuli cause pointing to the closest intact radius. (F) After cutting five adjacent strands, leaving two strands equidistant from the stimulus, pointing may be to either of the two equidistant radii.





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