Differentielle EEG-Ver�nderungen bei visuomotorischen und kognitiven T�tigkeiten

Grünewald, G; Симонова, О А; Creutzfeldt, O. D.

doi:10.1007/bf00341969

Cited by 12 publications

(3 citation statements)

References 16 publications

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“…The present study also sought to test whether the demand of a cognitive load (KLT) under caffeine results in quantifiable EEG alternations which differ from those under resting conditions or under placebo conditions. The course of EEG power density during KLT without caffeine shows an increase in all frequency ranges in the occipital region and an increase in theta power in frontal areas, and corresponded with knowledge of cortical activity under cognitive load [11,23]. Our studies on rats have shown, in addition, that spectral power density in the theta range is modulated by pharmacological interventions with respect to the noradrenergic transmitter system.…”

Section: Resultsmentioning

confidence: 81%

The influence of caffeine on human EEG under resting condition and during mental loads

Dimpfel¹,

Schober²,

Spüler³

1993

Clin Investig

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The effect of caffeine (single oral doses of 200 mg and 400 mg) on the CNS was tested under resting conditions and while performing a concentration performance test in a placebo-controlled pilot study on ten healthy males. The EEG was evaluated quantitatively by spectral analysis with a Computer Aided Topographical ElectroEncephaloMetry system. Comparison of the averaged frequency content revealed a clear difference between the change in the functional state of the brain due to the mental arithmetics, on the one hand, and the caffeine effect, on the other. Both states of altered brain activity were reflected in a particular topographical distribution of the frequency change with respect to a frontal-occipital accentuation. Comparison of the two periods of mental arithmetics in the absence or presence of caffeine showed a tendency to concentration-dependent differences from each other. Administration of 200 mg and 400 mg caffeine in the relaxed state effected the decrease in spectral power in the theta and alpha ranges. The concentration performance test without caffeine effected decreases in power in the alpha range in frontal to parietal cortex and enhanced theta power in frontal and occipital regions and the alpha power in occipital cortex. The caffeine-dependent decrease in theta power and the decrease in delta power seen under relaxation conditions after 400 mg are not observed during the concentration performance test in the presence of caffeine.

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Section: Resultsmentioning

confidence: 81%

The influence of caffeine on human EEG under resting condition and during mental loads

Dimpfel¹,

Schober²,

Spüler³

1993

Clin Investig

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show abstract

“…Hinweise auf eine unterschiedliche Funktion der @Aktivität im passiven bzw. aktiven Wach-EEG (46,48), Beziehungen zu Persönlichkeitsvariablen (14, 17, 49) und dem jeweiligen hirnelektrischen Ausgangsniveau (1 0, 15,26,38) wurden von den genannten Autoren gegeben. Mulholland U. Mitarb.…”

Section: Untersuchungen üBer Struktur Und Verlauf Des Hirnelektrischeunclassified

“…ProbandenUntersucht wurden 13 männliche Probanden im Alter von[23][24][25][26][27][28][29][30][31][32][33][34][35] Jahren, die nach EEGKriterien (crTyp, keine ausgeprägte Hemispa rendifferenz, keine paroxysmalen Potentiale oder steilere Abläufe) ausgewählt waren. Besonderer Wert wurde auf eine okzipital gut ausgeprägte, stabile ruheA Aktivität gelegtErgebnisseIn den Tab.…”

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Veränderungen der hirnelektrischen Organisation bei visuellen Such- und Diskriminationsprozessen unterschiedlichen Schwierigkeitsgrades

Zeller¹,

Bente²

1983

Klin Neurophysiol

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Statistical EEG Analysis in Strains of Rats with Genetically Determined Different Learning Performance

Dolce¹,

Offenloch²,

Sannita³

et al. 1973

Memory and Transfer of Information

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Differentielle EEG-Ver�nderungen bei visuomotorischen und kognitiven T�tigkeiten

Cited by 12 publications

References 16 publications

The influence of caffeine on human EEG under resting condition and during mental loads

The influence of caffeine on human EEG under resting condition and during mental loads

Veränderungen der hirnelektrischen Organisation bei visuellen Such- und Diskriminationsprozessen unterschiedlichen Schwierigkeitsgrades

Statistical EEG Analysis in Strains of Rats with Genetically Determined Different Learning Performance

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