Hemispheric Asymmetry in Lexical Decisions: The Effects of Grammatical Class and Imageability

Nieto, Antonieta; Santacruz, Rosario; Hernández, Sergio; Camacho-rosales, Juan; Barroso, José

doi:10.1006/brln.1999.2180

Cited by 22 publications

(31 citation statements)

References 55 publications

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“…Analogous results were obtained in experiments conducted in normal subjects, studying the categorization of verbal and pictorial stimuli tachistoscopically presented to the right and left hemisphere [34]. Similar results have also been found in studies using a semantic priming paradigm to examine whether perceptual or conceptual components of word meanings would be associated with the left or right hemisphere [35].…”

Section: Results Of Investigations Which Have Compared Memory or Csupporting

confidence: 76%

“…For instance, in the Nieto et al [34] study, a right visual field advantage was obtained for a categorization task using verbal material, whereas the visual field differences were not significant when pictorial material was used. In a similar manner, in the Gainotti et al [33] study, only the prevalent disruption of verbal memory in left BD patients was significant, whereas the trend in the opposite direction shown by right BD patients on the test of pictorial memory was nonsignificant.…”

Section: Results Of Investigations Which Have Compared Memory or Cmentioning

confidence: 99%

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Why Are the Right and Left Hemisphere Conceptual Representations Different?

Gainotti

2014

Behavioural Neurology

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The present survey develops a previous position paper, in which I suggested that the multimodal semantic impairment observed in advanced stages of semantic dementia is due to the joint disruption of pictorial and verbal representations, subtended by the right and left anterior temporal lobes, rather than to the loss of a unitary, amodal semantic system. The main goals of the present review are (a) to survey a larger set of data, in order to confirm the differences in conceptual representations at the level of the right and left hemispheres, (b) to examine if language-mediated information plays a greater role in left hemisphere semantic knowledge than sensory-motor information in right hemisphere conceptual knowledge, and (c) to discuss the models that could explain both the differences in conceptual representations at the hemispheric level and the prevalence of the left hemisphere language-mediated semantic knowledge over the right hemisphere perceptually based conceptual representations.

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Section: Results Of Investigations Which Have Compared Memory or Csupporting

confidence: 76%

Section: Results Of Investigations Which Have Compared Memory or Cmentioning

confidence: 99%

Why Are the Right and Left Hemisphere Conceptual Representations Different?

Gainotti

2014

Behavioural Neurology

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“…Such evidence comes primarily from reports of dextral patients with optic aphasia Saffran, 1989, 1992) and other language deficits resulting from right hemisphere damage (Cappa et al, 1990), as well as from split-brain patients (Gazzaniga, 1983;Gazzaniga and Sperry, 1967;Zaidel, 1976Zaidel, , 1983. Moreover, visual half-field research has shown that verbs are processed faster in the left hemisphere compared to the right, while there is no hemispheric advantage for the processing of concrete nouns (Day, 1979;Eviatar et al, 1990;Nieto et al, 1999;Sereno, 1999).…”

Section: Bilateral Processing Of Nounsmentioning

confidence: 99%

Dissociating neural correlates for nouns and verbs

et al. 2005

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Dissociations in the ability to produce words of different grammatical categories are well established in neuropsychology but have not been corroborated fully with evidence from brain imaging. Here we report on a PET study designed to reveal the anatomical correlates of grammatical processes involving nouns and verbs. German-speaking subjects were asked to produce either plural and singular nouns, or first-person plural and singular verbs. Verbs, relative to nouns, activated a left frontal cortical network, while the opposite contrast (nouns-verbs) showed greater activation in temporal regions bilaterally. Similar patterns emerged when subjects performed the task with pseudowords used as nouns or as verbs. These results converge with findings from lesion studies and suggest that grammatical category is an important dimension of organization for knowledge of language in the brain. D

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“…1983; Faust and Chiarello 1998; Federmeier and Kutas 1999; Nieto et al. 1999; Sereno 1999; Coney and Evans 2000; Faust and Weisper 2000; Gold and Kertesz 2000; Seger et al. 2000).…”

Section: Introductionmentioning

confidence: 99%

Spatio‐temporal distribution of brain activity associated with audio‐visually congruent and incongruent speech and the McGurk Effect

2015

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IntroductionSpatio‐temporal distributions of cortical activity to audio‐visual presentations of meaningless vowel‐consonant‐vowels and the effects of audio‐visual congruence/incongruence, with emphasis on the McGurk effect, were studied. The McGurk effect occurs when a clearly audible syllable with one consonant, is presented simultaneously with a visual presentation of a face articulating a syllable with a different consonant and the resulting percept is a syllable with a consonant other than the auditorily presented one.MethodsTwenty subjects listened to pairs of audio‐visually congruent or incongruent utterances and indicated whether pair members were the same or not. Source current densities of event‐related potentials to the first utterance in the pair were estimated and effects of stimulus–response combinations, brain area, hemisphere, and clarity of visual articulation were assessed.ResultsAuditory cortex, superior parietal cortex, and middle temporal cortex were the most consistently involved areas across experimental conditions. Early (<200 msec) processing of the consonant was overall prominent in the left hemisphere, except right hemisphere prominence in superior parietal cortex and secondary visual cortex. Clarity of visual articulation impacted activity in secondary visual cortex and Wernicke's area. McGurk perception was associated with decreased activity in primary and secondary auditory cortices and Wernicke's area before 100 msec, increased activity around 100 msec which decreased again around 180 msec. Activity in Broca's area was unaffected by McGurk perception and was only increased to congruent audio‐visual stimuli 30–70 msec following consonant onset.ConclusionsThe results suggest left hemisphere prominence in the effects of stimulus and response conditions on eight brain areas involved in dynamically distributed parallel processing of audio‐visual integration. Initially (30–70 msec) subcortical contributions to auditory cortex, superior parietal cortex, and middle temporal cortex occur. During 100–140 msec, peristriate visual influences and Wernicke's area join in the processing. Resolution of incongruent audio‐visual inputs is then attempted, and if successful, McGurk perception occurs and cortical activity in left hemisphere further increases between 170 and 260 msec.

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Hemispheric Asymmetry in Lexical Decisions: The Effects of Grammatical Class and Imageability

Cited by 22 publications

References 55 publications

Why Are the Right and Left Hemisphere Conceptual Representations Different?

Why Are the Right and Left Hemisphere Conceptual Representations Different?

Dissociating neural correlates for nouns and verbs

Spatio‐temporal distribution of brain activity associated with audio‐visually congruent and incongruent speech and the McGurk Effect

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