Reality monitoring in anosognosia for hemiplegia

Consciousness and Cognition 18 (2):458-470 (2009)
Anosognosia for hemiplegia is a lack of awareness about paralysis following stroke. Recent explanations use a ‘forward model’ of movement to suggest that AHP patients fail to register discrepancies between internally- and externally-generated sensory information. We predicted that this failure would impair the ability to recall from memory whether information is internally- or externally-generated . Two experiments examined this prediction. Experiment 1 demonstrated that AHP patients exhibit a reality monitoring deficit for non-motor information , whilst hemiplegic controls without anosognosia perform like age-matched healthy volunteers . Experiment 2 explored if this deficit occurs when AHP patients discriminate performed, imagined, or observed movement. Results showed impaired reality monitoring for movements in AHP and nonAHP patients relative to HVs. Findings suggest that reality monitoring processes not directly related to movement, together with a failure to reality monitor movements, contribute to the pathogenesis of AHP
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DOI 10.1016/j.concog.2008.12.005
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References found in this work BETA
Sarah-Jayne Blakemore & Chris Frith (2003). Self-Awareness and Action. Current Opinion in Neurobiology. Special Issue 13 (2):219-224.
Sarah-Jane Blakemore (2003). Deluding the Motor System. Consciousness and Cognition 12 (4):647-655.

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