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| LÓPEZ,JAVIER; LÓPEZ,VLADIMIR; ROJAS,DANIEL; CARRASCO,XIMENA; ROTHHAMMER,PAULA; GARCÍA,RICARDO; ROTHHAMMER,FRANCISCO; ABOITIZ,FRANCISCO. |
| Although there is extensive literature about the effects of stimulants on sustained attention tasks in attentional deficit/hyperactivity disorder (ADHD), little is known about the effect of these drugs on other attentional tasks involving different neural systems. In this study we measured the effect of stimulants on ADHD children, both in the electroencephalographic (EEG) activity during sustained attentional tasks and in psychometric performance during selective attentional tasks. These tasks are known to rely on different cortical networks. Our results in children medicated with 10 mg of d-amphetamine administered 60 min before the study indicate (i) a significant increase in amplitude but not latency of the P300 component of the event-related potential... |
| Tipo: Journal article |
Palavras-chave: Attentional deficit; EEG; Event-related potentials; Hyperactivity; Stroop; P300. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000300010 |
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| IBÁÑEZ,AGUSTÍN M; SAN MARTÍN,RENÉ; HURTADO,ESTEBAN; LÓPEZ,VLADIMIR. |
| In the last few decades, several works on event related potentials (ERPs hereafter) during sleep have been reported. In spite of numerous studies, clear methodological rules for this kind of study are often missing, making it difficult to valorize the scope of these results. We propose here a description of methodological aspects to be considered when evaluating ERPs during sleep. The use of Rechtschaffen and Kales rules versus automatic methods is assessed, plus the additional use of certain quantitative measures. Additionally, two topics are discussed which must be controlled in ERPs sleep studies: the First Night Effect, and sleep disturbances. Better control of experimental paradigms is relevant for the growth of the neuroscience of sleep. |
| Tipo: Journal article |
Palavras-chave: Sleep; ERP; Rechtschaffen and Kales rules; First Night Effect; Automatic sleep scoring systems. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602008000300004 |
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