Topo-electroencephalographie quantitative par ordinateur

Pidoux, B.; Etevenon, P.; Campistron, D; Peron-Magnan, P.; Bisserbe, J.-C.; Verdeaux, G; Deniker, P

doi:10.1016/s0370-4475(83)80014-8

Cited by 7 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Small samples can be ade quately tested by this statistic. The statistical programs were written in FORTRAN IV and applied to the EEG cartography data-base (IMAGE 1000, HewlettPackard) and its application programs, stored on hard disc (20 M words of 16 bits) containing 8 M words of reserved 400 EEG indi vidual lists of spectral parameters, each of them providing 90 EEG mappings [22].…”

Section: Permutation Fisher Testmentioning

confidence: 99%

Electroencephalographic Cartography

1985

View full text Add to dashboard Cite

10 male volunteers, right-handers, mean age 30.4 years, were recorded in four successive sequences: under ‘eyes closed’ conditions, right and then left hemisphere, followed by an ‘eyes open’ situation with visual attention fixed on a cartoon, right and then left hemisphere recordings. Each EEG recording was made simultaneously over 16 EEG channels for each hemisphere, according to a protocol previously described as well as Fourier analysis and EEG mapping on a minicomputer (HP 5451 C, HP 1000). Each EEG recording was stored on a cartography data base, and 90 maps could be drawn from 10 spectral parameters applied to the raw EEG and 5 frequency bands. Permutation paired Fisher tests were applied to three main EEG parameters: mean centroid frequencies, RMS amplitudes in microvolts and relative (%) amplitudes. Activation of EEG in the ‘eyes open’ situation during visual fixation was found compared to the ‘eyes closed’ situation: decreasing dominant EEG frequency and low δ and Θ mean frequencies, no change in a mean α frequency; increasing fast mean β frequencies, together with a major decrease in Θ, α, β₁ amplitudes, and a concomitant increase in raw EEG, δ and β₂ amplitudes. Finally, the percent α amplitude was decreased when other percent amplitudes were increased in δ, Θ, β₁ and β₂ frequency bands. A symmetry between hemispheres was observed in the ‘eyes closed’ situation. Averaged EEG maps between subjects illustrate these findings, especially relative (%) α amplitude maps and also maps of coefficients of resonance of the α rhythm.

show abstract

Section: Permutation Fisher Testmentioning

confidence: 99%

Electroencephalographic Cartography

1985

View full text Add to dashboard Cite

show abstract

“…In 1971 Lehmann [ 10], followed by Ueno et al [20], Petsche [14] and Ragot and Remond [18] presented evoked potentials and/or EEG mapping by computers. In 1979, Duffy et al [5] published their first article on the brain electrical activity mapping technique, followed by Dubinsky and Barlow [4], Buchsbaum et al [1,2], Eteve non et al [8], Persson and Hjorth [12], and Pidoux et al [ 16]. In 1984, Gaches and Etevenon [9], Sebban et al [ 19] and Debouzy et al [3], presented first results obtained by using a microcomputer instead of a minicomputer for mapping EEG.…”

Section: Introductionmentioning

confidence: 99%

Electroencephalographic Cartography

et al. 1985

View full text Add to dashboard Cite

We have recorded control subjects, neurological and psychiatric patients (n = 217 sequences recorded over both hemispheres). Minicomputers (HP Fourier analyzer, HP 1000) for spectral analysis provided 10 spectral parameters over 5 spectral frequency bands (δ, Θ, α, β₁, Β₂, raw EEG). For each recorded sequence, 90 EEG maps could be computed over both hemispheres. Topo-EEGs were stored in an EEG image data bank. An EEG mapping microcomputer system linked with a digital polygraph (Alvar Electronic, REEGA 2000) has been used simultaneously. White noises have been fed into both computers for testing spatial resolution. Ten topo-EEGs have been recorded in control subjects and patients. The microcomputer system has provided very reliable topographical results when compared to similar maps generated by the minicomputer. A common average reference has been used. First clinical applications have been studied (brain strokes, brain tumors). The method appears very reliable in comparison with CT scans.

show abstract

EEG Imaging of Brain Activity in Clinical Psychopharmacology

Saletu¹

1989

Topographic Brain Mapping of EEG and Evoked Potentials

View full text Add to dashboard Cite

Topo-electroencephalographie quantitative par ordinateur

Cited by 7 publications

References 10 publications

Electroencephalographic Cartography

Electroencephalographic Cartography

Electroencephalographic Cartography

EEG Imaging of Brain Activity in Clinical Psychopharmacology

Contact Info

Product

Resources

About