Visual Hallucinations as a Cerebral Localizing Phenomenon

When the left brain is not right the right brain may be left: report of personal experience of occipital hemianopia

“…Horrax27 strongly supported this view, as did Cushing. Horrax and Putnam28state more strongly that “formed figure hallucinations are not produced by occipital tumors.” (Their material consisted entirely of tumours.…”

When the left brain is not right the right brain may be left: report of personal experience of occipital hemianopia

“…Horrax27 strongly supported this view, as did Cushing. Horrax and Putnam28state more strongly that “formed figure hallucinations are not produced by occipital tumors.” (Their material consisted entirely of tumours.…”

Illusions of Comparative Interpretation and Emotion

“…Lund 5 reported two cases ; Gowers,6 Wilson,7 and Bender and Kanzer,8 each re¬ ported one case of visual illusions arising in the right hemisphere. Horrax,9 on the other hand, reported the occurrence of macropsia in a patient with a left temporal lobe tumor but did not definitely record handedness or speech localization. This lateralization of the visual illusions in the nondominant hemi¬ sphere is also in agreement with psycho¬ metric studies of Milner10 and Halstead,11 both of whom found evidence of impaired eye-hand coordination in cases of lesions in the nondominant temporal lobe.…”

Parietal and Occipital Lobe Epilepsy: A Review

“…Published reports describe a high association with parietooccipital lesions (Allen, 1930;Horrax and Putnam, 1932;Gloning et al, 1967;Lance and Misbach, 1974;Lance, 1976; Gastaut and Zifkin, 1984;Lance and Smee, 1989) perhaps in part due to ascertainment bias, but lesions of the temporal lobes have also been implicated (Horrax, 1923;David et al, 1945).…”

“…Head and eye turning may occur in the direction of the moving pictures, and it may be difficult to determine whether the movement is voluntary or a seizure manifestation. Size of the hallucinatory figures may be normal, diminutive, or larger than life (Horrax, 1923;Horrax and Putnam, 1932;Robinson and Watt, 1947). Color may be normal or the figures or pictures may be colorless, and they may appear distorted to take the form of grotesque images.…”

“…When epileptic in origin, visual hallucinations are almost always brief, lasting a few seconds to minutes, and the patients are usually aware of the unreality of the experience. Published reports describe a high association with parietooccipital lesions (Allen, 1930;Horrax and Putnam, 1932;Gloning et al, 1967;Lance and Misbach, 1974;Lance, 1976;Gastaut and Zifkin, 1984; Lance and Smee, 1989) perhaps in part due to ascertainment bias, but lesions of the temporal lobes have also been implicated (Horrax, 1923;David et al, 1945).…”

When the left brain is not right the right brain may be left: report of personal experience of occipital hemianopia

“…Horrax27 strongly supported this view, as did Cushing. Horrax and Putnam28state more strongly that “formed figure hallucinations are not produced by occipital tumors.” (Their material consisted entirely of tumours.…”

Illusions of Comparative Interpretation and Emotion

“…Lund 5 reported two cases ; Gowers,6 Wilson,7 and Bender and Kanzer,8 each re¬ ported one case of visual illusions arising in the right hemisphere. Horrax,9 on the other hand, reported the occurrence of macropsia in a patient with a left temporal lobe tumor but did not definitely record handedness or speech localization. This lateralization of the visual illusions in the nondominant hemi¬ sphere is also in agreement with psycho¬ metric studies of Milner10 and Halstead,11 both of whom found evidence of impaired eye-hand coordination in cases of lesions in the nondominant temporal lobe.…”

Parietal and Occipital Lobe Epilepsy: A Review

“…Published reports describe a high association with parietooccipital lesions (Allen, 1930;Horrax and Putnam, 1932;Gloning et al, 1967;Lance and Misbach, 1974;Lance, 1976; Gastaut and Zifkin, 1984;Lance and Smee, 1989) perhaps in part due to ascertainment bias, but lesions of the temporal lobes have also been implicated (Horrax, 1923;David et al, 1945).…”

“…Head and eye turning may occur in the direction of the moving pictures, and it may be difficult to determine whether the movement is voluntary or a seizure manifestation. Size of the hallucinatory figures may be normal, diminutive, or larger than life (Horrax, 1923;Horrax and Putnam, 1932;Robinson and Watt, 1947). Color may be normal or the figures or pictures may be colorless, and they may appear distorted to take the form of grotesque images.…”

“…When epileptic in origin, visual hallucinations are almost always brief, lasting a few seconds to minutes, and the patients are usually aware of the unreality of the experience. Published reports describe a high association with parietooccipital lesions (Allen, 1930;Horrax and Putnam, 1932;Gloning et al, 1967;Lance and Misbach, 1974;Lance, 1976;Gastaut and Zifkin, 1984; Lance and Smee, 1989) perhaps in part due to ascertainment bias, but lesions of the temporal lobes have also been implicated (Horrax, 1923;David et al, 1945).…”

When the left brain is not right the right brain may be left: report of personal experience of occipital hemianopia

“…Horrax27 strongly supported this view, as did Cushing. Horrax and Putnam28state more strongly that “formed figure hallucinations are not produced by occipital tumors.” (Their material consisted entirely of tumours.…”

Illusions of Comparative Interpretation and Emotion

“…Lund 5 reported two cases ; Gowers,6 Wilson,7 and Bender and Kanzer,8 each re¬ ported one case of visual illusions arising in the right hemisphere. Horrax,9 on the other hand, reported the occurrence of macropsia in a patient with a left temporal lobe tumor but did not definitely record handedness or speech localization. This lateralization of the visual illusions in the nondominant hemi¬ sphere is also in agreement with psycho¬ metric studies of Milner10 and Halstead,11 both of whom found evidence of impaired eye-hand coordination in cases of lesions in the nondominant temporal lobe.…”

Parietal and Occipital Lobe Epilepsy: A Review

“…Published reports describe a high association with parietooccipital lesions (Allen, 1930;Horrax and Putnam, 1932;Gloning et al, 1967;Lance and Misbach, 1974;Lance, 1976; Gastaut and Zifkin, 1984;Lance and Smee, 1989) perhaps in part due to ascertainment bias, but lesions of the temporal lobes have also been implicated (Horrax, 1923;David et al, 1945).…”

“…Head and eye turning may occur in the direction of the moving pictures, and it may be difficult to determine whether the movement is voluntary or a seizure manifestation. Size of the hallucinatory figures may be normal, diminutive, or larger than life (Horrax, 1923;Horrax and Putnam, 1932;Robinson and Watt, 1947). Color may be normal or the figures or pictures may be colorless, and they may appear distorted to take the form of grotesque images.…”

“…When epileptic in origin, visual hallucinations are almost always brief, lasting a few seconds to minutes, and the patients are usually aware of the unreality of the experience. Published reports describe a high association with parietooccipital lesions (Allen, 1930;Horrax and Putnam, 1932;Gloning et al, 1967;Lance and Misbach, 1974;Lance, 1976;Gastaut and Zifkin, 1984; Lance and Smee, 1989) perhaps in part due to ascertainment bias, but lesions of the temporal lobes have also been implicated (Horrax, 1923;David et al, 1945).…”