Lateralized deficits in complex visual discrimination and bilateral transfer of reminiscence following unilateral temporal lobectomy

Meier, Manfred J.; French, Lyle A.

doi:10.1016/0028-3932(65)90028-x

Cited by 81 publications

(22 citation statements)

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“…AIthough the longer response latency of the RT group relative to other subject groups was not obtained for the same tasks in the two experiments, the fact that it was evident in both studies would argue against it being spurious. AIthough Frisk and Milner (1991) suggested that the slowed response time of the RT ( :( \ 41 subjects was secondary to the more general visual-perceptual deficit associated with such les ions (Kimura, 1963;LansdeIl, 1968;Meier & French, 1965;Milner, 1958), the results of the present investigation argue against this explanation, since a similar deficit was found in the auditory modality. It is also unlikely that the longer response latencies are simply due to an impainllent in motor control caused by the surgery: the effect was obtained not only for the hand contralateral to the lesion, but also for the ipsilateral one (that is, for judgements of both plausibility and implausibility).…”

Section: Discussioncontrasting

confidence: 50%

The effect of presentation rate on the comprehension and recall of speech after anterior temporal-lobe resection

Johnsrude

Milner

1994

Neuropsychologia

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AbstraetAbnonnally slow proeessing of language may be a factor eontributing to the poor verbal memory seen in many patients with lesions of the anterior temporal region in the left hemisphere. This possibility was examined by comparing the performance of 12 patients with left temporal-lobe resections (L T), 10 patients with similar lesions in the right hemisphere (RT) and 13 normal control (NC) subiects on a lexical-decision task, a sentence-plausibility-judgement task, and a story-reeall task. Stimuli were presented aurally, and, in the latter two tasks, at 5 different speech rates ranging from 125 words per minute (wpm) to 325 wpm. Recall of stories by L T subjects was not abnormally sensitive to the effeet of inereasing rate, although il was inferior to that by NC subjeets at all speeds. L T patients were also impaired at judging the lexicality of words and nonwords presented aurally but not visually (Frisk and Milner, 1991), suggesting that the left anterior temporal region plays a special role in the proeessing of speech sounds. rappel des histoires par les sujets TG n'a pas été anonnaJement affecté par l'augmentation de la vitesse de la parole, bien qu'il fût inférieur à celui des sujets témoins à toutes les vitesses. La perfonnanc~ des sujets TG a été également affecteé lors des tâches de jugement de la légitimité de mots et dc faux-mots, qui avaient été presentés auditive ment mais pas visuellement (Frisk et Milner, 1991). Ceci suggère que le lobe temporal antéricur gauche joue un rôle particulier dans le traitement des sons du langage.

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Section: Discussioncontrasting

confidence: 50%

The effect of presentation rate on the comprehension and recall of speech after anterior temporal-lobe resection

Johnsrude

Milner

1994

Neuropsychologia

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“…Studies of humans with unilateral (Biederman, Gerhardstein, Cooper, & Nelson, 1997;Ellis, Young, & Critchley, 1989;Greenlee, Lang, Mergner, & Seeger, 1995;Greenlee, Richewski, Mergner, & Seeger, 1993;Kimura, 1963;Lansdell, 1968;Meier & French, 1965;Milner, 1958;Milner, 1968;Milner, 1990) or bilateral (Damasio, Damasio, Tranel, & Brandt, 1990;Damasio, Damasio, & Van Hoesen, 1982) temporal lobectomies have demonstrated profound effects on visual learning and memory, particularly when tested with object, pattern, and face recognition. Although this literature has emphasized the learning-and memory-related nature of these deªcits, it remains possible that they were due in part to perceptual disruptions.…”

Section: Introductionmentioning

confidence: 99%

Deficits in Complex Visual Perception Following Unilateral Temporal Lobectomy

Huxlin

Merigan

1998

Journal of Cognitive Neuroscience

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Although human temporal cortex is known to be important for short- and long-term memory, its role in visual perception is not well understood. In this study, we compared the performance of three patients with unilateral temporal lobectomies to that of normal controls on both "simple" and "complex" visual discriminations that did not involve explicit memory components. Two types of complex tasks were tested that involved discriminations secondary to texture segmentation. These were contrasted with simple discriminations using luminance-defined stimuli. Patients showed impaired thresholds only on tasks involving texture segmentation, performing as well as controls when the targets were defined by luminance rather than texture. The minimum stimulus presentation times for threshold performance were also measured for all tasks and found to be elevated in temporal lobectomy patients relative to controls. Although the magnitude of the deficits observed was substantial, loss was equivalent in ipsi- and contra-lesional regions of the visual field. Additional control experiments showed that the patients' perceptual deficits were not due, even in part, to disturbances of basic visual capacities such as acuity and contrast sensitivity. Our results indicate that temporal lobe damage disrupts complex, but not simple, visual discriminations throughout the visual field.

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“…This conclusion seems warranted even if the Object Assembly score reduction reflected an artifact resulting from selective differences in construction between the WAIS and W-B performance scales. Additional support of such a deficit derives from evidence of selective impairment after right temporal lobectomy in the ability to discriminate between fragmented concentric circle patterns (6) and adds credence to the hypothesis that the deficit constitutes a loss in visual discriminability which arises as a direct function of stimulus complexity rather than the level of nonverbal cognition required by visually guided tasks.…”

Section: Manfred J Meirr and Lyle A Frenchmentioning

confidence: 82%

Longitudinal assessment of intellectual functioning following unilateral temporal lobectomy

Meier

French

1966

J. Clin. Psychol.

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INTRODUCTIONAlthough evidence for the presence of lateralized cognitive deficits in man is not unequivocal(8), acute destructive lesions of the dominant cerebral hemisphere have been shown to produce selective verbal impairment while nondominant hemisphere lesions have been associated with visuospatial dysfunction", l a ) . Such differential patterns of psychological test performance have appeared more consistently in cases with lateralized posterior lesions @). Furthermore, the verbal deficits arising out of left hemisphere involvement have been more clearly measurable in the presence of aphasic disturbances ( I ) , although more incisive assessment procedures have revealed subtle verbal deficits without gross impairment of verbal functioning(5, 9, li, l6).Since many of these investigations have operationally defined the independent lateralization variable by sampling representative neurological groups, factors such as nature of the neuropathological process, interruption of function through cerebral edema or intracranial pressure, lesion-induced changes in vascular supply to other areas, and pre-existing diffuse cerebral deterioration have not been amenable to direct surveillance and control. As a consequence, these factors have probably been confounded with the lateralization variable to obscure higher order interactions among such dimensions and, in so doing, have served to produce seemingly contradictory findings("). On the other hand, systematic investigation of lateral hemispheric differences in intellectual function has been actualized through cognitive assessment before and after unilateral temporal lobectomy in the neurosurgical treatment of temporal lobe epilepsy. Since the epileptogenic lesions in such patients are typically rather static in nature and, thus, less complicated by such irrelevant variables, resection of the anterior temporal lobe has provided a basis for more precise determination of lateral differences in cerebral dysfunction. 9 , a general tendency toward higher subtest scores in patients with epileptogenic foci of predominantly right temporal lobe origin was observed preoperatively, especially on the verbal tests. One month postoperatively, their nondominant group showed an increased superiority on all subtests largely as a function of a verbal subtest decline in the dominant group. This finding led to the postulation of a dysphasic basis for the obtained result. By contrast, Milner(lO) reported a deficit on the Picture Arrangement subtest of the Wechsler-Bellevue Form I before and after unilateral temporal lobectomy, but she did not mention any differential deficit between the left and right temporal lobectomy groups. A similar defect in the sequential ordering of complex pictorial stimuli was found in a small group of cases with acutely destructive right as compared with the left anterior temporal lobe lesions(la). However, none of the previous pre-to postoperative comparisons were made over a significant time interval longitudinally so that transient operative effects might have b...

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Lateralized deficits in complex visual discrimination and bilateral transfer of reminiscence following unilateral temporal lobectomy

Cited by 81 publications

References 17 publications

The effect of presentation rate on the comprehension and recall of speech after anterior temporal-lobe resection

The effect of presentation rate on the comprehension and recall of speech after anterior temporal-lobe resection

Deficits in Complex Visual Perception Following Unilateral Temporal Lobectomy

Longitudinal assessment of intellectual functioning following unilateral temporal lobectomy

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