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Titolo:
GENETIC INFLUENCES ON EEG COHERENCE IN 5-YEAR-OLD TWINS
Autore:
VANBAAL GCM; DEGEUS EJC; BOOMSMA DI;
Indirizzi:
VRIJE UNIV AMSTERDAM,DEPT PSYCHOPHYSIOL,DE BOELELAAN 1111 NL-1081 HV AMSTERDAM NETHERLANDS
Titolo Testata:
Behavior genetics
fascicolo: 1, volume: 28, anno: 1998,
pagine: 9 - 19
SICI:
0001-8244(1998)28:1<9:GIOECI>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHILDREN;
Keywords:
BRAIN; EEG COHERENCE; TWINS; HERITABILITY; CHILDREN; GENETICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
G.C.M. Vanbaal et al., "GENETIC INFLUENCES ON EEG COHERENCE IN 5-YEAR-OLD TWINS", Behavior genetics, 28(1), 1998, pp. 9-19

Abstract

Electroencephalographic (EEG) coherence has been suggested to be an index of the connectivity of the brain. It represents the coupling between two EEG signals from different brain areas and is mathematically analogous to a cross-correlation in the frequency domain. We obtained data from 167 pairs of 5-year-old twins to study genetic and environmental influences on individual differences in intrahemispheric coherences. Coherence was computed in the theta band (4.0 to 7.5 cycles/s) between prefrontal, frontal, central, parietal, and occipital regions during quiet rest. Univariate genetic analyses of the data showed moderateto strong genetic influences for all coherences. Broad heritabilitiesranged from 30 to 71%, with a mean heritability of 49%. With one exception, no sex differences were found. Split-half reliabilities varied with interelectrode distances, ranging from .91 for the shortest distance to .62 for the longest distance. When split-half reliabilities arecompared with heritabilities, the data suggest that for cortico-cortical connections between adjacent brain areas, a large part of the variance is explained by ''true'' environmental influences, whereas for longer connections, that is, sensory to frontal areas, the variance is mostly genetic in origin.

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Documento generato il 29/01/20 alle ore 19:04:08