Abstract:
:Working memory (WM) performance is very often measured using the n-back task, in which the participant is presented with a sequence of stimuli, and required to indicate whether the current stimulus matches the one presented n steps earlier. In this study, we used high-density electroencephalography (hdEEG) coupled to source localization to obtain information on spatial distribution and temporal dynamics of neural oscillations associated with WM update, maintenance and readout. Specifically, we a priori selected regions from a large fronto-parietal network, including also the insula and the cerebellum, and we analyzed modulation of neural oscillations by event-related desynchronization and synchronization (ERD/ERS). During update and readout, we found larger θ ERS and smaller β ERS respect to maintenance in all the selected areas. γLOW and γHIGH bands oscillations decreased in the frontal and insular cortices of the left hemisphere. In the maintenance phase we observed decreased θ oscillations and increased β oscillations (ERS) in most of the selected posterior areas and focally increased oscillations in γLOW and γHIGH bands in the frontal and insular cortices of the left hemisphere. Finally, during WM readout, we also found a focal modulation of the γLOW band in the left fusiform cortex and cerebellum, depending on the response trial type (true positive vs. true negative). Overall, our study demonstrated specific spectral signatures associated with updating of memory information, WM maintenance, and readout, with relatively high spatial resolution.
journal_name
Hum Brain Mappjournal_title
Human brain mappingauthors
Semprini M,Bonassi G,Barban F,Pelosin E,Iandolo R,Chiappalone M,Mantini D,Avanzino Ldoi
10.1002/hbm.25283subject
Has Abstractpub_date
2020-11-17 00:00:00eissn
1065-9471issn
1097-0193pub_type
杂志文章abstract::Classically, model-based segmentation procedures match magnetic resonance imaging (MRI) volumes to an expertly labeled atlas using nonlinear registration. The accuracy of these techniques are limited due to atlas biases, misregistration, and resampling error. Multi-atlas-based approaches are used as a remedy and invol...
journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.22092
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journal_title:Human brain mapping
pub_type: 杂志文章
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更新日期:1997-01-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.21114
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.23186
更新日期:2016-07-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
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journal_title:Human brain mapping
pub_type: 杂志文章
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.22162
更新日期:2014-01-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.23518
更新日期:2017-04-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.24274
更新日期:2018-11-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.22680
更新日期:2015-03-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.21255
更新日期:2012-04-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.22002
更新日期:2013-07-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.24836
更新日期:2020-02-15 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.22904
更新日期:2015-10-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.22056
更新日期:2013-09-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章,评审
doi:10.1002/hbm.25029
更新日期:2020-05-18 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.24213
更新日期:2018-09-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.24779
更新日期:2019-12-15 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.10075
更新日期:2003-01-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.23259
更新日期:2016-10-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.22227
更新日期:2014-03-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.23515
更新日期:2017-04-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.10037
更新日期:2002-07-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.20217
更新日期:2006-09-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.23578
更新日期:2017-06-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.23819
更新日期:2017-12-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/(sici)1097-0193(1999)7:2<136::aid-hbm6>3.0
更新日期:1999-01-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.23467
更新日期:2017-03-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
doi:10.1002/hbm.24039
更新日期:2018-07-01 00:00:00
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journal_title:Human brain mapping
pub_type: 杂志文章
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更新日期:2007-04-01 00:00:00