Non-rhythmic temporal prediction involves phase resets of low-frequency delta oscillations.
Neuroimage
; 224: 117376, 2021 01 01.
Article
em En
| MEDLINE
| ID: mdl-32949708
ABSTRACT
The phase of neural oscillatory signals aligns to the predicted onset of upcoming stimulation. Whether such phase alignments represent phase resets of underlying neural oscillations or just rhythmically evoked activity, and whether they can be observed in a rhythm-free visual context, however, remains unclear. Here, we recorded the magnetoencephalogram while participants were engaged in a temporal prediction task, judging the visual or tactile reappearance of a uniformly moving stimulus. The prediction conditions were contrasted with a control condition to dissociate phase adjustments of neural oscillations from stimulus-driven activity. We observed stronger delta band inter-trial phase consistency (ITPC) in a network of sensory, parietal and frontal brain areas, but no power increase reflecting stimulus-driven or prediction-related evoked activity. Delta ITPC further correlated with prediction performance in the cerebellum and visual cortex. Our results provide evidence that phase alignments of low-frequency neural oscillations underlie temporal predictions in a non-rhythmic visual and crossmodal context.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Tato
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Córtex Visual
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Ritmo beta
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Ritmo Delta
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article