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Itaru Tamura, Shinsuke Hamada, Hiroyuki Soma, Fumio Moriwaka, Kunio Tashiro
A 69-year-old male (N.A.) with Creutzfeldt-Jakob disease showed pure autotopagnosia. We administered tests evaluating his ability to name his own body parts, to point to body parts (his own and examiner's), and to recognize positional relationships between his body parts by verbal questions and responses. We found impaired localization of the patient's own body parts by pointing and impaired recognition of positional relationships between his body parts. However, there was no impairment in naming his own body parts or in localizing the examiner's body parts...
October 2016: Cognitive Neuropsychology
Alfredo Ardila
Some unusual neuropsychological syndromes are rarely reported in the neuropsychological literature. This paper presents a review of four of these unusual clinical syndromes: (1) somatoparaphrenia (delusional belief in which a patient states that the limb contralateral to a brain pathology, does not belong to him/her); (2) akinetopsia (cortical syndrome in which patient losses the ability to perceive visual motion); (3) reduplicative paramnesia (believe that a familiar place, person, object, or body part has been duplicated); and (4) autotopagnosia (disturbance of body schema involving the loss of ability to localize, recognize, or identify the specific parts of one's body)...
August 2016: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
Matthew R Longo
Knowledge of the spatial layout of bodies is mediated by a representation called the body structural description, damage to which results in the condition of autotopagnosia in which patients are impaired in judgments about the location and configuration of body parts. While a large literature has investigated disruption of the body structural description, little research has examined its accuracy in healthy individuals. I show that people have systematically distorted knowledge of the configuration of hands...
September 2015: Cognition
Natsuko Tsuruya, Mutsutaka Kobayakawa
A variety of disorders have been associated with the concept of body schema. However, this concept has been interpreted in many ways, and there is no consensus on the nature and cognitive mechanisms of body schema. Historically, two major issues have been discussed. One was the body-specificity of the body schema, and the other was the relationship between input and output modality. Autotopagnosia, an inability to localize and orient different parts of the body, has been a focus of attention because it is thought to provide insight into the function of body schema...
April 2014: Brain and Nerve, Shinkei Kenkyū No Shinpo
A Ardila
A historical review of calculation abilities is presented. Counting, starting with finger sequencing, has been observed in different ancient and contemporary cultures, whereas number representation and arithmetic abilities are found only during the last 5000-6000 years. The rationale for selecting a base of ten in most numerical systems and the clinical association between acalculia and finger agnosia are analyzed. Finger agnosia (as a restricted form of autotopagnosia), right-left discrimination disturbances, semantic aphasia, and acalculia are proposed to comprise a single neuropsychological syndrome associated with left angular gyrus damage...
1993: Behavioural Neurology
J Schwoebel, H B Coslett, L J Buxbaum
We report a patient with autotopagnosia (JD) who was unable to code the position of body parts relative to each other and who failed to update the position of body parts after passive movements. JD's performance in Studies 1-4 suggest that her ability to code the dynamic location of body parts with respect to each other ("intrinsic egocentric" spatial coding) was impaired, and that she employed a compensatory strategy by means of which the location of body parts was computed with respect to objects in the environment ("extrinsic egocentric" spatial coding)...
June 1, 2001: Cognitive Neuropsychology
L J Buxbaum, H B Coslett
Previous accounts of autotopagnosia (e.g., Ogden, 1985; Pick, 1908; Semenza, 1988) propose that the disorder is attributable to deficits in "mental images," visual body schema, or semantic representations. A recent account (Sirigu, Grafman, Bressler, & Sunderland, 1991b) posits deficits in visual structural descriptions of the human body and its parts, in the context of spared semantic and proprioceptivespatio-motor body representations, but provides no evidence bearing on the nature or format of the putatively damaged representation...
June 1, 2001: Cognitive Neuropsychology
No abstract text is available yet for this article.
September 1946: Bulletin of the Los Angeles Neurological Society
Corrado Corradi-Dell'Acqua, Maike D Hesse, Raffaella I Rumiati, Gereon R Fink
Neuropsychological studies suggest that patients with left parietal lesions may show impaired localization of parts of either their own or the examiner's body, despite preserved ability to identify isolated body parts. This deficit, called autotopagnosia, may result from damage to the Body Structural Description (BSD), a representation which codes spatial relationships among body parts. We used functional magnetic resonance imaging to identify the neural mechanisms underlying the BSD. Two human body or building parts (factor: STIMULI) were shown to participants who either identified them or evaluated their distance (factor: TASK)...
December 2008: Cerebral Cortex
C M J Braun, S Desjardins, S Gaudelet, A Guimond
The psychic tonus model (Braun and colleagues, 1999, 2002, 2003, 2006) states that the left hemisphere is a "booster" of internal experience and behavior in general, and that the right hemisphere is a "dampener". Twenty-five patients with a "positive" extreme disturbance of body schema (somatoparaphrenia) and 37 patients with a "negative" disturbance of body schema (autotopagnosia or Gerstmann's syndrome), all following a unilateral parietal lesion, were found in the literature and were analyzed to test predictions from Braun's "psychic tonus" model...
2007: Behavioural Neurology
Marcella Laiacona, Nadia Allamano, Lorena Lorenzi, Erminio Capitani
A left hemisphere stroke patient presented a disproportionate difficulty for body parts knowledge without autotopagnosia. The deficit concerned the lexical-semantic representation of body parts and was most severe for limbs. The ability to gesture was spared and action naming was not more impaired than object naming. On the basis of normal naming latencies, we conclude that limbs are the most vulnerable component of the overall category of body parts. This vulnerability is not explained by unbalanced nuisance variables...
October 2006: Neurocase
P Tariska, K Urbanics
The authors summarize the data of 60 patients of the Memory Clinic of the National Institute of Psychiatry and Neurology between 6 January 1992 and 6 June 1994 where the probable Alzheimer's disease (NINCDS-ADRDA) was diagnosed. It was examined whether it was possible to isolate homogenous subtypes based on clinical data. Interesting differences of tendency level could be demonstrated in the groups formed on the basis of data published in the literature. Differences of statistical significance level were as follows: occurrence of depression in the groups created on the basis of the patient age at the time of onset of the disease (early-late onset), and of alexia and autotopagnosia in the groups created on the basis of progression rate (slow - quick)...
July 1995: Archives of Gerontology and Geriatrics
No abstract text is available yet for this article.
May 1963: Archivio di Psicologia, Neurologia e Psichiatria
Olivier Felician, Mathieu Ceccaldi, Mira Didic, Catherine Thinus-Blanc, Michel Poncet
Since Pick's seminal studies on autotopagnosia dating back to the beginning of last century, no agreement has been reached regarding the nature of the putative representations underlying the act of pointing to body parts. One influential account proposed the existence of a meta-representation, eventually organised as a module, specifically engaged in encoding spatial relationships of bodies. This body-specific representational level has been supposed to be equally involved in processing other persons' bodies as well as one's own...
2003: Neuropsychologia
C Guariglia, L Piccardi, M C Puglisi Allegra, M Traballesi
We report a case of pure autotopagnosia (AT) following a left subcortical vascular accident. The absence of any language disorder, general mental deterioration or other cognitive impairments in this patient allowed an in-depth study of AT. Several tests of body representation and object and animal representation, as well as tests assessing semantic skills were administered to verify current interpretations of AT. Results showed a clear-cut dissociation between defective performances in body representation tests and normal performances on tests involving other kinds of stimuli...
2002: Neuropsychologia
G Denes, J Y Cappelletti, T Zilli, F Dalla Porta, A Gallana
Following a vascular lesion in the parietal cortex of the language dominant hemisphere (right in one case), two patients showed a striking dissociation between spared naming, recognition and use of their body parts and an inability in localising on verbal command the same body parts on themselves and on a mannequin (Autotopagnosia, AT). The patients were submitted to a modified version of Reed and Farah Test (1995), a test that taps the ability to encode changes of body position as opposed to changes of position of objects...
2000: Neuropsychologia
J D Degos, A C Bachoud-Levi
We describe a disorder similar to body-image agnosia or autotopagnosia characterized by the inability to designate targets situated outside the body. This disorder, which we have termed allotopagnosia, occurs exclusively in subjects with a lesion involving the posterior region of the left parietal lobe. The most common manifestation is the designation of parts of the body of another person as being part of the patient's own body (heterotopagnosia with self-designation). This disorder cannot be explained by aphasia, apraxia, or visuomotor dysfunction nor by an inability to identify parts of the body as self...
May 1998: Revue Neurologique
M Tobita, O Hasegawa, H Nagatomo, S Yamaguchi, R Kurita
A 52-year-old right-handed man presented progressive dystonia and apraxia of his right hand of five years' duration. He also suffered from parkinsonian features such as rigidity or impaired postural reflexes. Serial investigation of brain MRI revealed progressive cerebral atrophy, which started in the left parietal lobe, and subsequently extended to both hemispheres. He was clinically diagnosed as corticobasal degeneration. He could not point at any part of his own body in response to verbal or visual commands...
March 1995: Rinshō Shinkeigaku, Clinical Neurology
J F Dalmás, C Mandilaharsu
The authors report the case of a 42 years-old electrician man, with an 8 months progressive manual difficulties in his specific job, with a complete disability for the last 2 months. These symptoms were associated with anemia, deterioration of the general condition, and slight fever. Three days after the first neuropsychological examination he, suddenly, developed a left hemiparesis. Laboratory investigations confirmed the occurrence of a systemic lupus erythematosus. The neuropsychological examination showed: normal intellectual level with slight memory deficit; severe constructional and ideomotor apraxia; gaze ataxia; optical ataxia; hemisomatoagnosia, anosognosia, and autotopagnosia; agraphia...
1980: Acta Neurológica Latinoamericana
J Cambier, D Elghozi, P Graveleau, C Lubetzki
A 72-year-old right-handed hypertensive man presented with a right brachial monoplegia, and hypesthesia of the right half of the body to touch and pricking, sparing the face. A CT scan 2 weeks later showed a spontaneous hyperdense area corresponding to a left subcortical parietal hematoma. The patient used his spontaneous language to express body image disturbances: intense prolonged feeling of amputation related to the upper limb and foot on the right side, hemiasomatognosia without anosognosia, autotopagnosia...
1984: Revue Neurologique
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