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Kunstformen der Natur (1904) by Ernst Haeckel
Kunstformen der Natur (1904) by Ernst Haeckel
  1. A state of reduced consciousness or sensibility
  2. a state in which one has difficulty in thinking or using one's senses

Stupor represents an important loss in cognitive functions. The word derives from the Latin "stupure," meaning insensible. Being characterised by impairments of reactions to external stimuli, it usually appears in infectious diseases, complicated toxic states, mental illnesses (e.g. schizophrenia), vascular illnesses (e.g. hypertensive encephalopathy), neoplasms (e.g. brain tumors), and so on.


If not stimulated externally, a patient with Stupor will be in a sleepy mode most of the time. Short periods of restricted responsivity can be achieved by intense stimulation (e.g. pain, bright light, loud noise).

Localisation of brain lesions

Lesions of the Ascending Reticular Activation System on height of the Pons and Metencephalon have been shown to cause Stupor. The incidence is higher after left-sided lesions.

See also

Unless indicated otherwise, the text in this article is either based on Wikipedia article "Stupor" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on original research by Jahsonic and friends. See Art and Popular Culture's copyright notice.

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