Topography of evoked brain activity during mental arithmetic and language tasks: sex differences

Skrandies, Wolfgang; Reik, Petra; Kunze, Ch

doi:10.1016/s0028-3932(98)00103-1

Cited by 47 publications

(24 citation statements)

References 36 publications

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“…These latencies indicate that sex differences occur at a relatively early time point within the temporal cascade of the attentional processing stream. Our results are strongly supported by previous electrophysiological studies on different functional sexual dimorphisms occurring up to 300 ms [Desrocher et al, 1995;Emmerson-Hanover et al, 1994;Gootjes et al, 2008;Gü ntekin and Basar 2007;Proverbio et al, 2006;Skrandies et al, 1999]. Our findings were observed in the absence of significant behavioral differences and are unlikely to be confounded by group disparities other than sex as distribution of demographic variables including video playing experience and performance on basic neuropsychological tasks were not significantly different between groups in multivariate analysis.…”

Section: Discussionsupporting

confidence: 90%

“…This is in line with other studies reporting on sex differences at this latency, although various measures were pursued, including visual evoked potentials [Emmerson-Hanover et al, 1994], potential fields and global field power [Skrandies et al, 1999], face recognition-related potentials [Proverbio et al, 2006], and eventrelated oscillations [Gü ntekin and Basar, 2007]. Despite reporting partially divergent directions of obtained results, these studies indicate where in the temporal cascade of the visual processing stream sex differences might be sought.…”

Section: Introductionsupporting

confidence: 88%

See 1 more Smart Citation

Spatiotemporal mapping of sex differences during attentional processing

Neuhaus¹,

Opgen‐Rhein²,

Urbanek³

et al. 2009

Human Brain Mapping

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Functional neuroimaging studies have increasingly aimed at approximating neural substrates of human cognitive sex differences elicited by visuospatial challenge. It has been suggested that females and males use different behaviorally relevant neurocognitive strategies. In females, greater right prefrontal cortex activation has been found in several studies. The spatiotemporal dynamics of neural events associated with these sex differences is still unclear. We studied 22 female and 22 male participants matched for age, education, and nicotine with 29-channel-electroencephalogram recorded under a visual selective attention paradigm, the Attention Network Test. Visual event-related potentials (ERP) were topographically analyzed and neuroelectric sources were estimated. In absence of behavioral differences, ERP analysis revealed a novel frontal-occipital second peak of visual N100 that was significantly increased in females relative to males. Further, in females exclusively, a corresponding central ERP component at around 220 ms was found; here, a strong correlation between stimulus salience and sex difference of the central ERP component amplitude was observed. Subsequent source analysis revealed increased cortical current densities in right rostral prefrontal (BA 10) and occipital cortex (BA 19) in female subjects. This is the first study to report on a tripartite association between sex differences in ERPs, visual stimulus salience, and right prefrontal cortex activation during attentional processing.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionsupporting

confidence: 88%

Spatiotemporal mapping of sex differences during attentional processing

Neuhaus¹,

Opgen‐Rhein²,

Urbanek³

et al. 2009

Human Brain Mapping

View full text Add to dashboard Cite

show abstract

“…In conclusion, the patterns of the results obtained in the current study suggest that the gender-related differences in EEG patterns obtained during the absence of EMF appear to be consistent with gender differences in functional brain organization as indicated from psychophysiological and neurobiological studies (Skrandies et al 1999;Dimpfel et al 2003;Briere et al 2003).…”

Section: Discussionsupporting

confidence: 83%

Influence of a 1,800 MHz electromagnetic field on the EEG energy

et al. 2009

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The present study investigated the influence of electromagnetic fields (EMF), similar to that emitted by mobile phones, on brain activity. Ten women and ten men, matched for age and educational level, performed a short memory task (Wechsler test), with simultaneous Electroencephalogram (EEG) recordings at 15 scalp electrodes, both without (baseline) and with exposure to an 1,800 MHz signal. The EEG energy was found concentrated at the four basic EEG bands [a (8-13 Hz), b (14-30 Hz), d (0-4 Hz), and h (5-7 Hz)]. The analysis revealed that in the presence of EMF, the energy of the b band was significantly greater for females than for males at the majority of the electrodes. Since beta oscillation is associated with the shift of attention during the perception, these findings may indicate that the particular EMF (1,800 MHz signal) exerts an influence on this brain activity, which appears to be gender-related.

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“…The results of Corsi-Cabrera, Arce, Ramos, and Guevara (1997) and Rescher and Rappelsberger (1999) indicate different intra-and interhemispheric correlations of EEG activity in males and females, a finding commonly related to gender differences in certain brain structures (e.g., the posterior corpus callosum). Skrandies, Reik, and Kunze (1999) found a consistently larger global field power in females, suggesting that during visual information processing, different neural assemblies are activated in males and females. Empirical evidence favoring gender differences in physiological parameters of cortical activation comes also from PET, fMRI, and brain nerve conduction velocity studies.…”

Section: Gender Differencesmentioning

confidence: 86%