Hallucinations and illusions : a study of the fallacies of perception / by Edmund Parish.
- Edmund Parish
- Date:
- 1897
Licence: Public Domain Mark
Credit: Hallucinations and illusions : a study of the fallacies of perception / by Edmund Parish. Source: Wellcome Collection.
Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.
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![arouse violent emotions which render calm con- sideration impossible.^ While, on the one hand, hallucinations may impli- cate several senses simultaneously, on the other partial or unilateral fallacies may occur.^ It is true that Rose has denied the existence of unilateral hallucinations, and has endeavoured to explain them away, as probably a mixture of delusion and true sensation ; for instance, in one case where an insane patient was suffering from ear-ache caused by inflam- mation of the middle ear. But their existence ought by this time to be pretty well established. Gall relates the case of a minister of state who constantly heard insulting w^ords whispered into his left ear ; and in the more recent literature of the subject such examples are no longer rare. According to Krafft-Ebing, the uni- lateral voices are heard better when the other ear is closed—when, for instance, the patient is lying on it. Fallacious Perception iji Psychoneuroses,—Concern- ing the occurrence of hallucinations in neuras- thenia^ opinion is still divided, but there can be no ^ G. Ackermann, Ueber die Eniivickehing von Wahnideen ans Hallucinalorischen Vorgdngen (Diss, Jena, 1892). ^ Called hallucinations dedoublees byMichea; compare, among others, Souchon, Ueber einseitige Hallncinationen (Diss. Berlin, 1890); Alex. Robertson, in the Glasgow Med. Jotirn., vii. 4, pp. 196 et seq., 1875. Higier, Ueber unilaterale Hallucinationen, Wiener Klinik. (1894), quotes 52 cases from various sources, including Fiirer's self-obser- vations [Cejiiralbl. f. Nervenhlknd. ^^.Y. v.). Toulouse analyses 39 of these cases, which are distributed among the various senses as follows :— Unilateral auditory hallucinations, 26; visual, 7; tactile, I ; auditory and visual together, 4 ; visual, auditory, and tactile, I. ^ Thus Falret, for instance, in the Congres Intern, d. Med. Ment. (Paris, 1889), maintains that imperative ideas do not occur in associa- tion with hallucinations. On the other side, compare II. Kaan, Der Nturastheji. Angstaffect, etc.; Seglas, De Pobsession, Anti. ]\fel. Psych. ^ vii. p. 119 (1892). Their occurrence seems to be becoming more and more recognised.](https://iiif.wellcomecollection.org/image/b2107141x_0052.jp2/full/800%2C/0/default.jpg)
