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Attentional training in elderly subjects affects voluntarily oriented, but not automatic attention: A neurophysiological study
- Source :
-
Neuroscience Research . Aug2005, Vol. 52 Issue 4, p379-386. 8p. - Publication Year :
- 2005
-
Abstract
- Abstract: Objectives:: Our study aimed at investigating the effect of repetitive recordings on somatosensory evoked potentials (SEPs) related to spatial attention in a population of healthy elderly subjects. Methods:: Fifteen healthy elderly subjects were tested for six consecutive days using a somatosensory oddball paradigm, in which target stimuli were applied above the elbow and the non-target stimuli on the ipsilateral shoulder. Brain electrical activity was recorded from six scalp electrodes (Fz, Cz, F3, F4, T3 and T4). Results:: The N140 response to target stimuli showed a significantly decreased amplitude across the sessions with the lowest value during the fourth day of recording and with a partial recovery at the sixth day. On the contrary, the amplitude of the N140 response to non-target stimuli and that of the P300 potential to target stimuli were not significantly modified. Conclusions:: The significant amplitude reduction of the N140 potential in target, but not in non-target recordings across sessions, suggests that the voluntarily oriented attention is reduced by stimulus repetition, while the automatic attention is not. [Copyright &y& Elsevier]
- Subjects :
- *NEUROPHYSIOLOGY
*SOMATOSENSORY evoked potentials
*ELECTROENCEPHALOGRAPHY
*BRAIN
Subjects
Details
- Language :
- English
- ISSN :
- 01680102
- Volume :
- 52
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Neuroscience Research
- Publication Type :
- Academic Journal
- Accession number :
- 18091805
- Full Text :
- https://doi.org/10.1016/j.neures.2005.05.001