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. 2002 Jan;88(1):13-21.

[Activation of the human cortex during visual attention and selection]

[Article in Russian]
I N Baranov-Krylov  1 , I E Kanunikov, V T Shuvaev, D N Berlov, N A Kavshbaia
Affiliations
  • PMID: 11868256

[Activation of the human cortex during visual attention and selection]

[Article in Russian]
I N Baranov-Krylov et al. Ross Fiziol Zh Im I M Sechenova. 2002 Jan.

Abstract

Cortical activation in visual discrimination tasks was estimated by measurement of the CNV (contingent negative variation) and N1-P3 components of visual ERPs in frontal, parietal, occipital and temporal leads recorded in 18 young healthy adults. In all investigated tasks, the maximal values of CNV and ERPa were observed in parietal regions. The estimation of cortical readiness state (CNV) is quite a useful procedure in the attention tasks because amplitude and stability of ERPs depend on preceding cortical excitability. The prevalence of parietal activation in visual attention tasks may be considered as the dominance of occipito-parietal way (stream) in human visual attention system.

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