Lexical decision after left, right and bilateral presentation of function words, content words and non-words: Evidence for interhemispheric interaction

Mohr, Bettina; Pulvermüller, Freidemann; Zaidel, Eran

doi:10.1016/0028-3932(94)90073-6

Cited by 229 publications

(120 citation statements)

References 33 publications

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“…[33,43]). Finally, there is also evidence suggesting that word processing is more effective if both hemispheres have access the stimulus information compared with stimulation of the left-dominant hemisphere alone, implying a facilitatory effect of the right hemisphere's word processor on that in the left [29,30]. These results further confirm the existence of complementary language areas outside the left-hemispheric core areas, and suggest category-specific processes even on the non-dominant side of the brain.…”

Section: Introductionsupporting

confidence: 51%

Word-category specific deficits after lesions in the right hemisphere

2003

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A speeded lexical decision task was used to investigate word-category deficits in patients suffering from lesions in the right hemisphere and in neurological controls without cortical lesion. In all patients from one group (n = 12), the right frontal lobe was affected causing a left-sided hemiparesis. In the second group (n = 6), lesions primarily affected areas in the right inferior temporo-occipital lobes. Patients with motor deficits due to lesions in the spinal cord or in the periphery served as neurological controls (n = 9). Processing of three categories of words was investigated: verbs referring to actions (action verbs (acVs)); nouns with strong visual associations (visually-related nouns (viNs)); and nouns with both strong action and visual associations (bimodal nouns (biNs)). Stimulus categories were matched for word length and normalized lexical frequency. Error scores revealed a significant word category by patient group interaction. Patients with lesions in the right frontal lobe showed most severe deficits in processing action verbs, whereas those with lesions in their right temporo-occipital areas showed most severe deficits in processing visually-related nouns. Neurological controls did not show any differences between word categories. The double dissociation of the processing impairments seen in frontal versus temporo-occipital patients demonstrates that specific word-category deficits can arise from lesions in the right non-dominant hemisphere. An account for these results in terms of distributed neuronal systems representing words is offered.

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Section: Introductionsupporting

confidence: 51%

Word-category specific deficits after lesions in the right hemisphere

2003

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“…Word recognition involves synchronous activation of those multiple representations, coordinated, paced, and controlled by ''convergence zones'' (lexical entries) (Damasio, 1989;Damasio & Damasio, 1990), and semantic features from both hemispheres may converge to facilitate processing. This implies that bilateral copies of the word should be more potent in generating resource sharing than either single unilateral copies or two copies in the same hemisphere (Mohr, Pulvermuller, & Zaidel, 1994;Zaidel & Rayman, 1994a). An anatomical model fitting our design has been described in anterior cortical regions of primates where pathways from primary sensory, intermediate, and higher-order association cortices converge (Goldman-Rakic, 1988).…”

Section: Discussionmentioning

confidence: 99%

Hemispheric Independence in Word Recognition: Evidence from Unilateral and Bilateral Presentations

1996

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“…Finally, work on lateralized tachistoscopic presentation of open-and closed-class words has yielded evidence in support of the vocabulary distinction. Chiarello and Nuding (1987) and Mohr, Pulvermüller, and Zaidel (1994) demonstrated that closed-class words are processed fastest with right visual-ªeld presentation (i.e., primary input to the left hemisphere), with less or no differential visual-ªeld effect for open-class words.…”

Section: Introductionmentioning

confidence: 99%

Electrophysiological Signatures of Visual Lexical Processing: Open-and Closed-Class Words

Brown

Hagoort

Keurs

1999

Journal of Cognitive Neuroscience

145

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Abstractn This paper presents evidence of the disputed existence of an electrophysiological marker for the lexical-categorical distinction between open-and closed-class words. Event-related brain potentials were recorded from the scalp while subjects read a story. Separate waveforms were computed for open-and closed-class words. Two aspects of the waveforms could be reliably related to vocabulary class. The ªrst was an early negativity in the 230-to 350-msec epoch, with a bilateral anterior predominance. This negativity was elicited by open-and closedclass words alike, was not affected by word frequency or word length, and had an earlier peak latency for closed-class words.The second was a frontal slow negative shift in the 350-to 500-msec epoch, largest over the left side of the scalp. This late negativity was only elicited by closed-class words. Although the early negativity cannot serve as a qualitative marker of the open-and closed-class distinction, it does reºect the earliest electrophysiological manifestation of the availability of categorical information from the mental lexicon. These results suggest that the brain honors the distinction between open-and closed-class words, in relation to the different roles that they play in on-line sentence processing. s

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Lexical decision after left, right and bilateral presentation of function words, content words and non-words: Evidence for interhemispheric interaction

Cited by 229 publications

References 33 publications

Word-category specific deficits after lesions in the right hemisphere

Word-category specific deficits after lesions in the right hemisphere

Hemispheric Independence in Word Recognition: Evidence from Unilateral and Bilateral Presentations

Electrophysiological Signatures of Visual Lexical Processing: Open-and Closed-Class Words

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