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Biomedical subjects

M Crawshaw

Publications and source records attributed to M Crawshaw.

10 recordsLinked to original sources
PubMed1976

Oculomotor adaptation to prisms: complete transfer between eyes.

It is argued that previous experiments investigating interocular transfer of adaptation have been concerned with an adaptation of the registered position of the limb used to indicate direction. Thus the question of interocular transfer of adaptation sited at the eye remains open. Two experiments are reported. The first showed that there was complete transfer between exposed and unexposed eyes. The conditions were such that the adaptation could be explained only as a change in the registered position of the eye in the head, or of the head on the shoulders. The second experiment showed that changes of this latter kind did not occur.

Adaptation, Ocular↗
PubMed1975

Shifts in kinesthesis through time and after active and passive movement.

The position sense of a stationary arm was investigated subsequent to an horizontally adductive movement with axis the shoulder joint. The right arm was the treated arm: it reached a test position actively, using minimal voluntary effort, or passively from each of 10 starting positons. The blind-folded S localized the index finger of the treated arm by attempting to touch it with the index finger of his left hand. The results indicate that subsequent to active movement the final position of a limb is more accurately known than a position resulting from passive movement. A second finding is that concomitant with both forms of limb placement there is a unidirectional drift of perceived limb position over trials.

Arm↗