Selective modulation of auditory cortical alpha activity in an audiovisual spatial attention task.
J Neurosci
; 34(19): 6634-9, 2014 May 07.
Article
en En
| MEDLINE
| ID: mdl-24806688
ABSTRACT
Despite substantial research on attentional modulations of visual alpha activity, doubts remain as to the existence and functional relevance of auditory cortical alpha-band oscillations. It has been argued that auditory cortical alpha does not exist, cannot be measured noninvasively, or that it is dependent on visual alpha generators. This study aimed to address these remaining doubts concerning auditory cortical alpha. A magnetoencephalography study was conducted using a combined audiovisual spatial cueing paradigm. In each trial, a cue indicated the side (left or right) and the modality (auditory or visual) to attend, followed by a short lateralized auditory or visual stimulus. Participants were instructed to respond to the stimuli by a button press. Results show that auditory cortical alpha power is selectively modulated by the audiospatial, but not the visuospatial, attention task. These findings provide further evidence for a distinct auditory cortical alpha generator, which can be measured noninvasively.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Atención
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Corteza Auditiva
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Localización de Sonidos
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Percepción Espacial
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Ritmo alfa
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Año:
2014
Tipo del documento:
Article