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Abstract Details

Allochiria in Acute Right Hemispheric Dysfunction
Behavioral Neurology
P01 - (-)
009
Disturbances in body schema have been well documented after right hemisphere damage. However, the syndrome of allochiria has received little attention. Sensory allochiria (SA) is the mislocation of sensory stimuli on a contralesional limb to the opposite side of the body, in a symmetric location. Motor allochiria (MA) is a similar transposition of motor output: patients asked to move their contralesional limb move the opposite limb instead. We examined the prevalence and characteristics of this syndrome in a cohort of stroke patients.
We assessed 19 patients with acute right hemispheric stroke with neurological and neuropsychological examinations. SA was determined by asking patients, with eyes closed, to determine the body part and side of a pinprick stimulus at 8 sites (face, arm, hand, leg). MA was present if after request to perform movements with the left arm, the patient used the opposite limb. Investigations of body schema included anosognosia scales, tests of extra-personal neglect, personal neglect and limb ownership (asomatognosia).
Allochira was found in 6 patients (31%). SA was found in 4 patients (21%) and MA in 3 (15.8%). SA and MA dissociated in 5 patients, and co-occurred in 1. MA was associated with presence of anosognosia (p=0.036) and denial of limb ownership (p=0.01). SA was associated with denial of limb ownership (p=0.037).
Sensory and motor transpositions are common with acute right hemispheric damage as we observed this phenomenon in 31% of patients. SA and MA dissociate, which suggests they are neuropsychologically and neuroanatomically distinct processes. Allochiria implies a transfer of experiential content from the contralesional to the ipsilesional side, which may explain clinical phenomenology as well as inform neurocognitive models of body schema.
Authors/Disclosures
Daniel Antoniello, MD (Montefiore Medical Center)
PRESENTER 		Dr. Antoniello has nothing to disclose.
No disclosure on file
Daniel Weintraub Daniel Weintraub has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Clintrex. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Eisai. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Janssen. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Sage. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Scion. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Signant. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Sunovion. Daniel Weintraub has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Modality.ai. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Cerevel. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for CuraSen. Daniel Weintraub has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Takeda. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Boehringer Ingelheim. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Roche. Daniel Weintraub has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Acadia. Daniel Weintraub has received personal compensation in the range of $500-$4,999 for serving as an Editor, Associate Editor, or Editorial Advisory Board Member for Movement Disorder Society. The institution of Daniel Weintraub has received research support from NIH. The institution of Daniel Weintraub has received research support from Fox Foundation. The institution of Daniel Weintraub has received research support from IPMDS. Daniel Weintraub has received intellectual property interests from a discovery or technology relating to health care.