Anosognosia Research Articles

Heterogeneity of anosognosia in Alzheimer’s disease according to the object of awareness.

Heterogeneity of anosognosia in Alzheimer’s disease according to the object of awareness.

Can Anosognosia Vindicate Traditionalism about Self-Deception?

Can Anosognosia Vindicate Traditionalism about Self-Deception?

The “Altitudinal Anton’s Syndrome”: Coexistence of Anosognosia, Blindsight and Left Inattention

The “Altitudinal Anton’s Syndrome”: Coexistence of Anosognosia, Blindsight and Left Inattention

New Hypothesis of Understanding of Anosognosia of Babinski Type

バビンスキー型病態失認とソマトパラフレニアについて考察した。とりわけ, 筆者の考える, 発現機序仮説について述べた。筆者の仮説に従えば, 左半身の麻痺に気づかないようにみえるのは, 実は決して麻痺している左半身の麻痺を否認しているのではない。右半球損傷によって喪失した左半身の「身体意識」が, 残存する「身体図式」を介して右半身に組み込まれ, 右半身が身体意識のすべてとなる。患者は, 実は麻痺している左半身の麻痺を否認している訳ではない。ソマトパラフレニアは, 自身に帰属しなくなった左半身と現実の麻痺肢との間の矛盾解決のために生じた, 誘発作話, 空想作話である。

Intimidation and Anosognosia

Intimidation and Anosognosia

Self-consciousness, consciousness of the other and dementias

Studies of self-consciousness in dementia concern essentially anosognosia or the loss of insight. However, Self-consciousness is multifaceted: it includes awareness of the body, perceptions, one's own history, identity, and one's own projects. Self-consciousness is linked to consciousness of others i.e. to social cognition supported by identification of others, but also by comprehension of facial expression of emotions, comprehension and expression of emotional prosody, pragmatic abilities, ability to infer other's people's mental states, thoughts, and feelings (theory of mind and empathy), knowledge of social norms and rules, social reasoning. The subtypes of dementias (and namely Alzheimer's disease and frontotemporal dementia) affect heterogeneously the different aspects of the self-and other-consciousness. Further studies are needed for a better knowledge of the complex relationship between Self-consciousness, social cognition, decision making and neuropsychiatric symptoms and behavioral disturbances occurring in demented patients.

Freud and Neuropsychology: Comments Related to Anosognosia

Freud and Neuropsychology: Comments Related to Anosognosia

Hemispatial Neglect Has Important Implications for Prognosis

Hemispatial neglect is a dramatic and protean neurologic syndrome. In this study, researchers examined the clinical characteristics, neglect subtypes, lesion locations, and affiliated conditions in 166 patients after right-hemisphere strokes; participants were recruited from rehabilitation services and were fairly evenly distributed between acute (<6 weeks poststroke) and chronic (3 months to 3 years poststroke) groups. Patients underwent routine clinical and more specialized tests of neglect and were administered an anosognosia scale and a clinical-severity test (the functional independence measure). The …

Anosognosia, completion and confabulation: the neutral-personal dichotomy

Anosognosia, completion and confabulation: the neutral-personal dichotomy

Anosognosia, Completion and Confabulation: The Neutral-Personal Dichotomy

Anosognosia, Completion and Confabulation: The Neutral-Personal Dichotomy

Frequency, Determinants, and Consequences of Anosognosia in Acute Stroke

Anosognosia is a well-known symptom after stroke but its frequency following acute stroke is not known and knowledge of its impact on functional outcome is limited. This prospective study included 566 consecutive, unselected, acute stroke patients. Anoso gnosia was evaluated on acute admission using the test of Bisiach et al. (1986), stroke severity with the Scandinavian Neurological Stroke Scale (SNSS), and activities of daily living (ADLs) with the Barthel Index (BI). Multiple linear and logistic regres sion analyses were done to find the influence of anosognosia on the outcome of stroke per se. The frequency of anosognosia was 21% on acute admission. The lesion was located in the right hemisphere in 81% of the patients. Anosognosia was seen more frequently following cortical vs. subcortical lesions but showed no significant rela tionship to any of the four cortical lobes. The presence of anosognosia per se predicted 11.5 points less in discharge BI, increased the likelihood of death during the hospital stay by a factor of 4.4, and reduced the likelihood of discharge to independent living in survivors by 0.43. Anosognosia is common in acute stroke, has a profound influence on the prognosis, and indicates patients needing special encouragement and assistance with mobilization.

Introduction: The evidence for anosognosia

Introduction: The evidence for anosognosia

Displacement of disease in anosognosia

Displacement of disease in anosognosia

Absence of somatosensory evoked potentials in patients with anosognosia

Absence of somatosensory evoked potentials in patients with anosognosia