Ageing affects event-related potentials and brain oscillations: a behavioral and electrophysiological study using a haptic recognition memory task.
Identifieur interne : 002D18 ( Main/Exploration ); précédent : 002D17; suivant : 002D19Ageing affects event-related potentials and brain oscillations: a behavioral and electrophysiological study using a haptic recognition memory task.
Auteurs : Manuel Sebastián [Espagne] ; José M. Reales ; Soledad BallesterosSource :
- Neuropsychologia [ 1873-3514 ] ; 2011.
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Abstract
In this electrophysiological study, we investigated the effects of ageing on recognition memory for three-dimensional (3D) familiar objects presented to touch in a continuous paradigm. To examine changes in event-related potentials (ERPs) and brain oscillations, we recorded the EEGs of healthy groups of young (n=14; mean age=32.3 years) and older adults (n=14; mean age=65.1). Both age groups exhibited similar accuracy and exploration times when making old-new judgments. Young and older participants showed a marginally significant ERP old/new effect widely distributed over the scalp between 550-750 ms. In addition, the elders showed lower amplitude than younger participants within 1200-1500 ms. There were age-related differences in brain oscillations as measured by event-related spectral perturbation (ERSP). Older adults showed greater alpha and beta power reductions than young participants, suggesting the recruitment of additional neural resources. In contrast, the two age groups showed a reliable old/new effect in the theta band that temporarily overlapped the ERP old/new effect. The present results suggest that despite similar behavioral performance, the young and older adults recruited different neural resources to perform a haptic recognition task.
DOI: 10.1016/j.neuropsychologia.2011.10.013
PubMed: 22027172
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Reales</name></author><author><name sortKey="Ballesteros, Soledad" sort="Ballesteros, Soledad" uniqKey="Ballesteros S" first="Soledad" last="Ballesteros">Soledad Ballesteros</name></author></analytic><series><title level="j">Neuropsychologia</title><idno type="eISSN">1873-3514</idno><imprint><date when="2011" type="published">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Aging (physiology)</term><term>Analysis of Variance</term><term>Biological Clocks</term><term>Brain (physiology)</term><term>Electroencephalography</term><term>Evoked Potentials (physiology)</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Neuropsychological Tests</term><term>Physical Stimulation</term><term>Reaction Time</term><term>Recognition (Psychology)</term><term>Touch (physiology)</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Aging</term><term>Brain</term><term>Evoked Potentials</term><term>Touch</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Analysis of Variance</term><term>Biological Clocks</term><term>Electroencephalography</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Neuropsychological Tests</term><term>Physical Stimulation</term><term>Reaction Time</term><term>Recognition (Psychology)</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In this electrophysiological study, we investigated the effects of ageing on recognition memory for three-dimensional (3D) familiar objects presented to touch in a continuous paradigm. To examine changes in event-related potentials (ERPs) and brain oscillations, we recorded the EEGs of healthy groups of young (n=14; mean age=32.3 years) and older adults (n=14; mean age=65.1). Both age groups exhibited similar accuracy and exploration times when making old-new judgments. Young and older participants showed a marginally significant ERP old/new effect widely distributed over the scalp between 550-750 ms. In addition, the elders showed lower amplitude than younger participants within 1200-1500 ms. There were age-related differences in brain oscillations as measured by event-related spectral perturbation (ERSP). Older adults showed greater alpha and beta power reductions than young participants, suggesting the recruitment of additional neural resources. In contrast, the two age groups showed a reliable old/new effect in the theta band that temporarily overlapped the ERP old/new effect. The present results suggest that despite similar behavioral performance, the young and older adults recruited different neural resources to perform a haptic recognition task.</div></front></TEI><affiliations><list><country><li>Espagne</li></country><region><li>Communauté de Madrid</li></region></list><tree><noCountry><name sortKey="Ballesteros, Soledad" sort="Ballesteros, Soledad" uniqKey="Ballesteros S" first="Soledad" last="Ballesteros">Soledad Ballesteros</name><name sortKey="Reales, Jose M" sort="Reales, Jose M" uniqKey="Reales J" first="José M" last="Reales">José M. Reales</name></noCountry><country name="Espagne"><region name="Communauté de Madrid"><name sortKey="Sebastian, Manuel" sort="Sebastian, Manuel" uniqKey="Sebastian M" first="Manuel" last="Sebastián">Manuel Sebastián</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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