Approche statistique de l'E.E.G. dans l'hystérie de conversion

Timsit, Marc Olivier; Hougardy, G; Dongiermontagnac, S; Timsit‐Berthier, M.

doi:10.1016/s0370-4475(72)80055-8

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sustained attentional preparation can be indexed by the deployment of a centrally distributed event-related potential (ERP), the Contingent Negative Variation (CNV; Segalowitz et al, 1997 ; Kropp et al, 2001 ). With growing age, the CNV amplitude over the vertex increases (Timsit-Berthier and Hausmann, 1972 ; Jonkman, 2006 ; Hämmerer et al, 2010 ), and its topographical distribution changes: Tecce ( 1971 ) reported an increase in frontal CNV contribution, while Padilla et al ( 2013 ) observed a decrease in parietal CNV contribution beginning at age 12. Moreover, allocation of attentional resources to relevant stimuli can be reflected by the P3 amplitude (Becker and Shapiro, 1980 ; Johnson, 1986 ; Peltz et al, 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Sustained attention and prediction: distinct brain maturation trajectories during adolescence

Thillay

Roux

Gissot

et al. 2015

Front. Hum. Neurosci.

View full text Add to dashboard Cite

Adolescence is a key period for frontal cortex maturation necessary for the development of cognitive ability. Sustained attention and prediction are cognitive functions critical for optimizing sensory processing, and essential to efficiently adapt behaviors in an ever-changing world. The aim of the current study was to investigate the brain developmental trajectories of attentive and predictive processing through adolescence. We recorded EEG in 36 participants from the age of 12–24 years (three age groups: 12–14, 14–17, 18–24 years) to target development during early and late adolescence, and early adulthood. We chose a visual target detection task which loaded upon sustained attention, and we manipulated target predictability. Continued maturation of sustained attention after age 12 was evidenced by improved performance (hits, false alarms (FAs) and sensitivity) in a detection task, associated with a frontal shift in the scalp topographies of the Contingent Negative Variation (CNV) and P3 responses, with increasing age. No effect of age was observed on predictive processing, with all ages showing similar benefits in reaction time, increases in P3 amplitude (indexing predictive value encoding and memorization), increases in CNV amplitude (corresponding to prediction implementation) and reduction in target-P3 latency (reflecting successful prediction building and use), with increased predictive content. This suggests that adolescents extracted and used predictive information to generate predictions as well as adults. The present results show that predictive and attentive processing follow distinct brain developmental trajectories: prediction abilities seem mature by the age of 12 and sustained attention continues to improve after 12-years of age and is associated with maturational changes in the frontal cortices.

show abstract