Material-specific memory processing is related to language dominance

Weber, Bernd; Fließbach, Klaus; Lange, Nadine; Kügler, Frank; Elger, Christian E.

doi:10.1016/j.neuroimage.2007.05.022

Cited by 29 publications

(31 citation statements)

References 25 publications

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“…Furthermore, memory lateralization and language lateralization correlate. Although correlations between material-specific memory and language dominance have been found in healthy individuals [11], our results demonstrate that functional memory performance, as measured with the IAP, is concordant with language lateralization in patients with epilepsy. This relationship was not universal; the correlation between language lateralization and memory lateralization was strong in patients with cortical dysplasia (i.e., developmental lesions), whereas it was not significant in patients without MRI-identifiable lesions.…”

Section: Discussioncontrasting

confidence: 74%

“…One study provides evidence for a relationship between language dominance and memory processing in a group of healthy patients undergoing fMRI. In this study, verbal encoding correlates well with language dominance, whereas face encoding shows the opposite effect [11] and [12]. The relationship between language and memory dominance in patients with intractable epilepsy needs to be characterized.…”

Section: Introductionmentioning

confidence: 72%

“…There is only limited previous evidence supporting the fact that language lateralization and memory lateralization are linked [11] and [24]. Previous studies using fMRI have shown a material-specific lateralization of memory, with lateralization of verbal memory to the dominant hemisphere in healthy subjects [11]. However, no mixed item stimuli have been applied in this study.…”

Section: Correlation Between Language Lateralization and Memory Latermentioning

confidence: 87%

“…Furthermore, it has been shown that interhemispheric shifts in language dominance are usually associated with lesions found in close proximity to classic language-related areas, but with early-onset lesions in the temporal lobe, thus providing an indirect link between memory and language [10]. There is only limited previous evidence supporting the fact that language lateralization and memory lateralization are linked [11] and [24]. Previous studies using fMRI have shown a material-specific lateralization of memory, with lateralization of verbal memory to the dominant hemisphere in healthy subjects [11].…”

Section: Correlation Between Language Lateralization and Memory Latermentioning

confidence: 99%

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Memory performance is related to language dominance as determined by the intracarotid amobarbital procedure

Kovač¹,

Möddel²,

Reinholz³

et al. 2009

Epilepsy & Behavior

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ObjectiveThe goal of this study was to explore the relationship between language and memory lateralization in patients with epilepsy undergoing the intracarotid amobarbital procedure. MethodsIn 386 patients, language lateralization and memory lateralization as determined by laterality index (LI) were correlated with each other. ResultsLanguage lateralization and memory lateralization were positively correlated (r = 0.34, P < 0.01). Correlations differed depending on the presence and type of lesion (χ 2 = 7.98, P < 0.05). LIs correlated significantly higher (z = 2.82, P < 0.05) in patients with cortical dysplasia (n = 41, r = 0.61, P < 0.01) compared with the group without lesions (n = 90, r = 0.16, P > 0.05), with patients with hippocampal sclerosis falling between these two groups. Both memory (P < 0.01) and language (P < 0.01) LIs were higher in right-compared with left-sided lesions. ConclusionCorrelation of language and memory is more pronounced in patients with structural lesions as compared with patients without lesions on MRI.

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Section: Discussioncontrasting

confidence: 74%

Section: Introductionmentioning

confidence: 72%

Section: Correlation Between Language Lateralization and Memory Latermentioning

confidence: 87%

Section: Correlation Between Language Lateralization and Memory Latermentioning

confidence: 99%

See 2 more Smart Citations

Memory performance is related to language dominance as determined by the intracarotid amobarbital procedure

Kovač¹,

Möddel²,

Reinholz³

et al. 2009

Epilepsy & Behavior

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show abstract

“…In a previous study, we investigated the effect of language dominance on material-specific long-term memory processes in the medial temporal lobes (MTL) of healthy subjects [Weber et al, 2007]. In left dominant subjects, we found that memory for words and faces was lateralized to the left and right MTL, respectively; memory for pictures did not show lateralization.…”

Section: Introductionmentioning

confidence: 95%

Working memory representation in atypical language dominance

Axmacher

Bialleck

Weber

et al. 2008

Human Brain Mapping

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One of the most important factors controlling material specific processing in the human brain is language dominance, i.e. hemispheric specialization in semantic processes. Although previous studies have shown that lateralized long-term memory processes in the medial temporal lobes are modified in subjects with atypical (right) language dominance, the effect of language dominance on the neural basis of working memory (WM) has remained unknown. Here, we used functional MRI (fMRI) to study the impact of language dominance on the neural representation of WM. We conducted an nback task in three different load conditions and with both verbal and nonverbal (spatial) material in matched groups of left and right language dominant subjects. This approach allowed us to investigate regions showing significant interactions between language dominance and material. Overall, right dominant subjects showed an increased inter-individual variability of WM-related activations. Verbal WM involved more pronounced activation of the left fusiform cortex in left dominant subjects and of the right inferior parietal lobule in the right dominant group. Spatial WM, on the other hand, induced activation of right hemispheric regions in left dominant subjects, but no specific activations in right dominant subjects. Taken together, these findings indicate that the neural basis of verbal WM processes depends on language dominance and is more mutable in right dominant subjects. The increased variability in right dominant subjects strongly suggests that a standard network of material-dependent WM processes exists in left dominant subjects, and that right dominant subjects use variable alternative networks. Hum Brain Mapp 30:2032Mapp 30: -2043Mapp 30: , 2009. V V C 2008 Wiley-Liss, Inc.

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Differential effects of semantic processing on memory encoding

Fließbach

Buerger

Trautner

et al. 2010

Human Brain Mapping

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Deeper semantic processing of words leads to enhanced memory encoding (depth of processing effect). The left inferior prefrontal cortex (LIPC) and the left hippocampus are known to be involved in this effect. We tested the hypothesis that different semantic encoding processes contribute qualitatively differently to memory encoding. In a memory experiment using functional magnetic resonance imaging, we compared three different encoding tasks: a nonsemantic alphabetical, an animacy decision, and a size comparison tasks. Recognition memory was tested subsequently. We hypothesized that the size comparison task would activate brain areas involved in the processing of object features and that this would be associated with successful memory encoding. Results showed that the size comparison task led to significantly better memory encoding than the two other tasks. As with the animacy decision task, it led to stronger activation of the LIPC and left hippocampus than the nonsemantic task. Both regions also had stronger activations for later remembered than for nonremembered words. The size comparison task additionally led to stronger activation in the left anterior fusiform gyrus, which was also associated with successful memory encoding. We conclude that different types of semantic processing affect memory encoding based on distinguishable brain processes.

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Material-specific memory processing is related to language dominance

Cited by 29 publications

References 25 publications

Memory performance is related to language dominance as determined by the intracarotid amobarbital procedure

Memory performance is related to language dominance as determined by the intracarotid amobarbital procedure

Working memory representation in atypical language dominance

Differential effects of semantic processing on memory encoding

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