Sub-second "temporal attention" modulates alpha rhythms. A high-resolution EEG study.
In the present high-resolution electroencephalographic (EEG) study, event-related desynchronization/synchronization (ERD/ERS) of alpha rhythms was computed during an S1-S2 paradigm, in which a visual cue (S1) predicted a SHORT (600 ms) or LONG (1400 ms) foreperiod, preceding a visual go stimulus (S2...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2004
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| _version_ | 1797068757896527872 |
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| author | Babiloni, C Miniussi, C Babiloni, F Carducci, F Cincotti, F Del Percio, C Sirello, G Fracassi, C Nobre, A Rossini, P |
| author_facet | Babiloni, C Miniussi, C Babiloni, F Carducci, F Cincotti, F Del Percio, C Sirello, G Fracassi, C Nobre, A Rossini, P |
| author_sort | Babiloni, C |
| collection | OXFORD |
| description | In the present high-resolution electroencephalographic (EEG) study, event-related desynchronization/synchronization (ERD/ERS) of alpha rhythms was computed during an S1-S2 paradigm, in which a visual cue (S1) predicted a SHORT (600 ms) or LONG (1400 ms) foreperiod, preceding a visual go stimulus (S2) triggering right or left finger movement. Could orienting attention to a selective point in time influence the alpha rhythms as a function of the SHORT vs. LONG foreperiod? Stronger selective attentional modulations were predicted for the SHORT than LONG condition. EEG data from 54 channels were "depurated" from phase-locked visual evoked potentials and spatially enhanced by surface Laplacian estimation (i.e., final data analysis was conducted on 16 subjects having a sufficient number of artifact-free EEG single trials). Low-band alpha rhythms (about 6-10 Hz) were supposed to be related to anticipatory attentional processes, whereas high-band alpha rhythms (10-12 Hz) would indicate task-specific visuo-motor processes. Compared to the LONG condition (foreperiod), the SHORT condition induced a quicker and stronger ERS at low-band alpha rhythm (about 6-8 Hz) over midline and bilateral prefrontal, sensorimotor, and posterior parietal areas. In contrast, the concomitant high-band alpha (about 10-12 Hz) ERD/ERS showed no significant difference between the two conditions. In conclusion, temporal attention for a sub-second delay (800 ms) did modulate low-band alpha rhythm over large regions of both cortical hemispheres. |
| first_indexed | 2024-03-06T22:14:42Z |
| format | Journal article |
| id | oxford-uuid:52ffaa80-0cc4-443e-947f-fc165cfdef26 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:14:42Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:52ffaa80-0cc4-443e-947f-fc165cfdef262022-03-26T16:28:56ZSub-second "temporal attention" modulates alpha rhythms. A high-resolution EEG study.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:52ffaa80-0cc4-443e-947f-fc165cfdef26EnglishSymplectic Elements at Oxford2004Babiloni, CMiniussi, CBabiloni, FCarducci, FCincotti, FDel Percio, CSirello, GFracassi, CNobre, ARossini, PIn the present high-resolution electroencephalographic (EEG) study, event-related desynchronization/synchronization (ERD/ERS) of alpha rhythms was computed during an S1-S2 paradigm, in which a visual cue (S1) predicted a SHORT (600 ms) or LONG (1400 ms) foreperiod, preceding a visual go stimulus (S2) triggering right or left finger movement. Could orienting attention to a selective point in time influence the alpha rhythms as a function of the SHORT vs. LONG foreperiod? Stronger selective attentional modulations were predicted for the SHORT than LONG condition. EEG data from 54 channels were "depurated" from phase-locked visual evoked potentials and spatially enhanced by surface Laplacian estimation (i.e., final data analysis was conducted on 16 subjects having a sufficient number of artifact-free EEG single trials). Low-band alpha rhythms (about 6-10 Hz) were supposed to be related to anticipatory attentional processes, whereas high-band alpha rhythms (10-12 Hz) would indicate task-specific visuo-motor processes. Compared to the LONG condition (foreperiod), the SHORT condition induced a quicker and stronger ERS at low-band alpha rhythm (about 6-8 Hz) over midline and bilateral prefrontal, sensorimotor, and posterior parietal areas. In contrast, the concomitant high-band alpha (about 10-12 Hz) ERD/ERS showed no significant difference between the two conditions. In conclusion, temporal attention for a sub-second delay (800 ms) did modulate low-band alpha rhythm over large regions of both cortical hemispheres. |
| spellingShingle | Babiloni, C Miniussi, C Babiloni, F Carducci, F Cincotti, F Del Percio, C Sirello, G Fracassi, C Nobre, A Rossini, P Sub-second "temporal attention" modulates alpha rhythms. A high-resolution EEG study. |
| title | Sub-second "temporal attention" modulates alpha rhythms. A high-resolution EEG study. |
| title_full | Sub-second "temporal attention" modulates alpha rhythms. A high-resolution EEG study. |
| title_fullStr | Sub-second "temporal attention" modulates alpha rhythms. A high-resolution EEG study. |
| title_full_unstemmed | Sub-second "temporal attention" modulates alpha rhythms. A high-resolution EEG study. |
| title_short | Sub-second "temporal attention" modulates alpha rhythms. A high-resolution EEG study. |
| title_sort | sub second temporal attention modulates alpha rhythms a high resolution eeg study |
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