Laterality Effects in the Processing of Syllable Structure

Meinschaefer, Judith; Hausmann, Markus; Güntürkün, Onur

doi:10.1006/brln.1999.2153

Cited by 17 publications

(7 citation statements)

References 13 publications

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“…Compared with men, women yielded fewer if any lateral asymmetries in behavioral (McGlone, 1980;Halpern, 1986;Hough et al, 1994;Meinschaefer et al, 1999), neuroimaging (Shaywitz et al, 1995;Rossell et al, 2002) and anatomical (Wada et al, 1975;Kulynych et al, 1994;Shapleske et al, 1999;Amunts et al, 2000) studies. Such gender differences are supported by results obtained from patients with unilateral cerebral lesions (McGlone, 1977;Inglis and Lawson, 1981;Grabowska et al, 2001).…”

Section: Discussionmentioning

confidence: 85%

Brain State-dependent Functional Hemispheric Specialization in Men but not in Women

Möhr¹,

Michel²,

Lantz³

et al. 2005

Cerebral Cortex

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Hemispheric specialization is reliably demonstrated in patients with unilateral lesions or disconnected hemispheres, but is inconsistent in healthy populations. The reason for this paradox is unclear. We propose that functional hemispheric specialization in healthy participants depends upon functional brain states at stimulus arrival (FBS). Brain activity was recorded from 123 surface electrodes while 22 participants (11 women) performed lateralized lexical decisions (left hemisphere processing) on neutral and emotional (right hemisphere processing) words. We determined two classes of stable FBS, one with right anterior--left posterior orientations (RA-LP maps) and one with left anterior--right posterior orientations (LA-RP maps). Results show that functional hemispheric specialization is dependent upon the class of FBS and gender. Of those with LA-RP maps, only men showed a strong emotional word advantage (EWA) after left visual field (right hemisphere) presentation, but no EWA after right visual field (left hemisphere) presentation. Subsequent to all other brain states, there was an almost equal EWA after presentation to either visual field. Only about half of the FBS in men led to the pattern of functional hemispheric specialization. We suggest that 'split-brain' research may be marginally describable by a model, but only in exceptional situations, while in connected brains this functional hemispheric specialization is only one of many dynamic states.

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Section: Discussionmentioning

confidence: 85%

Brain State-dependent Functional Hemispheric Specialization in Men but not in Women

Möhr¹,

Michel²,

Lantz³

et al. 2005

Cerebral Cortex

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show abstract

“…A recent MEG study (personal communication with M. Haerle and B. Rockstroh) demonstrated a similar lateralization pattern in male and female subjects in a language production task. The left ear advantage in male participants observed by Meinschaefer et al [10] points in the same direction -although they examined processing of syllable structure, a task that was expected to trigger right-hemispheric dominant activity.…”

mentioning

confidence: 77%

“…Some evidence suggests that processing strategies influence lateralization of speech stimuli [13,16], and that processing strategies differ for the two sexes [6,10]. Therefore it seems unfortunate that most studies of vowel or CV/ CVC-syllable representation did not consider gender as a factor [1,2,4,11,15].…”

mentioning

confidence: 99%

Gender differences in functional hemispheric asymmetry during processing of vowels as reflected by the human brain magnetic response

Obleser

Eulitz

Lahiri

et al. 2001

Neuroscience Letters

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A number of findings indicate gender differences in language-related functional hemispheric brain asymmetry. To test if such gender-specific laterality is already present at the level of vowel-processing, the auditory evoked magnetic field was recorded in healthy right-handed male and female participants in response to the German synthetic vowels [a], [e] and [i]. Female participants exhibited stronger N100m responses than male participants over the left hemisphere. This observation was highly reliable across repeated experimental sessions. The present lateralization shows that previous findings suggesting a stronger left-hemispheric dominance for verbal material in males than in females can not be generalized to basic speech elements. Furthermore, the present results support the importance of controlling for gender ratio in studies of phonetic processing. q

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“…Impairments in schizophrenia have been found to be more pronounced in male than female patients (Hafner, 2003;Kumari, Aasen, & Sharma, 2004), in particular when hemispheric laterality is considered (Falkai et al, 1992;Ragland, Gur, Klimas, McGrady, & Gur, 1999). The same holds true for hemispheric functions in healthy individuals in general (McGlone, 1980;Meinschaefer, Hausmann, & Güntürkün, 1999) and healthy schizotypal individuals in particular (Mohr, Röhrenbach, Laska, & Brugger, 2001). We asked participants to imagine their body and perspective in the position of another person's body in space, requiring own-body imagery and spatial perspective taking.…”

Section: Discussionmentioning

confidence: 99%

Perceptual aberrations impair mental own-body transformations.

Möhr

Blanke

Brugger

2006

Behavioral Neuroscience

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Dysfunctional self and bodily processing have been reported from the schizophrenia spectrum. Here, the authors tested 72 students (40 women) to determine whether performance in a mental own-body transformation task relates to self-rated frequency of spontaneously experienced schizotypal body schema alterations (perceptual aberration). Participants provided speeded left-right decisions concerning the body of a visually depicted human figure (front view vs. back view). For men, reaction times to disembodied perspectives increased with increasing scores on a validated perceptual aberration scale. This finding constitutes behavioral evidence for the clinically postulated association between aberrant bodily experiences during everyday life and aberrant processing in a mental own-body transformation task arguably reflecting mild dysfunction at the temporo-parietal junction.

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Laterality Effects in the Processing of Syllable Structure

Cited by 17 publications

References 13 publications

Brain State-dependent Functional Hemispheric Specialization in Men but not in Women

Brain State-dependent Functional Hemispheric Specialization in Men but not in Women

Gender differences in functional hemispheric asymmetry during processing of vowels as reflected by the human brain magnetic response

Perceptual aberrations impair mental own-body transformations.

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