Theta Oscillations and Source Connectivity During Complex Audiovisual Object Encoding in Working Memory
Working memory is a limited capacity memory system that involves the short-term storage and processing of information. Neuroscientific studies of working memory have mostly focused on the essential roles of neural oscillations during item encoding from single sensory modalities (e.g., visual and aud...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2021-03-01
|
| Series: | Frontiers in Human Neuroscience |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fnhum.2021.614950/full |
| _version_ | 1818620569011093504 |
|---|---|
| author | Yuanjun Xie Yuanjun Xie Yanyan Li Haidan Duan Xiliang Xu Wenmo Zhang Wenmo Zhang Peng Fang |
| author_facet | Yuanjun Xie Yuanjun Xie Yanyan Li Haidan Duan Xiliang Xu Wenmo Zhang Wenmo Zhang Peng Fang |
| author_sort | Yuanjun Xie |
| collection | DOAJ |
| description | Working memory is a limited capacity memory system that involves the short-term storage and processing of information. Neuroscientific studies of working memory have mostly focused on the essential roles of neural oscillations during item encoding from single sensory modalities (e.g., visual and auditory). However, the characteristics of neural oscillations during multisensory encoding in working memory are rarely studied. Our study investigated the oscillation characteristics of neural signals in scalp electrodes and mapped functional brain connectivity while participants encoded complex audiovisual objects in a working memory task. Experimental results showed that theta oscillations (4–8 Hz) were prominent and topographically distributed across multiple cortical regions, including prefrontal (e.g., superior frontal gyrus), parietal (e.g., precuneus), temporal (e.g., inferior temporal gyrus), and occipital (e.g., cuneus) cortices. Furthermore, neural connectivity at the theta oscillation frequency was significant in these cortical regions during audiovisual object encoding compared with single modality object encoding. These results suggest that local oscillations and interregional connectivity via theta activity play an important role during audiovisual object encoding and may contribute to the formation of working memory traces from multisensory items. |
| first_indexed | 2024-12-16T17:55:27Z |
| format | Article |
| id | doaj.art-b65779207687455db52fe26b62956f53 |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-16T17:55:27Z |
| publishDate | 2021-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-b65779207687455db52fe26b62956f532022-12-21T22:22:11ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612021-03-011510.3389/fnhum.2021.614950614950Theta Oscillations and Source Connectivity During Complex Audiovisual Object Encoding in Working MemoryYuanjun Xie0Yuanjun Xie1Yanyan Li2Haidan Duan3Xiliang Xu4Wenmo Zhang5Wenmo Zhang6Peng Fang7School of Education, Xin Yang College, Xinyang, ChinaDepartment of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, ChinaSchool of Education, Xin Yang College, Xinyang, ChinaSchool of Education, Xin Yang College, Xinyang, ChinaSchool of Education, Xin Yang College, Xinyang, ChinaDepartment of Fundamental, Army Logistical University, Chongqing, ChinaDepartment of Social Medicine and Health and Management, College of Military Preventive Medicine, Army Medical University, Chongqing, ChinaDepartment of Military Medical Psychology, Fourth Military Medical University, Xi'an, ChinaWorking memory is a limited capacity memory system that involves the short-term storage and processing of information. Neuroscientific studies of working memory have mostly focused on the essential roles of neural oscillations during item encoding from single sensory modalities (e.g., visual and auditory). However, the characteristics of neural oscillations during multisensory encoding in working memory are rarely studied. Our study investigated the oscillation characteristics of neural signals in scalp electrodes and mapped functional brain connectivity while participants encoded complex audiovisual objects in a working memory task. Experimental results showed that theta oscillations (4–8 Hz) were prominent and topographically distributed across multiple cortical regions, including prefrontal (e.g., superior frontal gyrus), parietal (e.g., precuneus), temporal (e.g., inferior temporal gyrus), and occipital (e.g., cuneus) cortices. Furthermore, neural connectivity at the theta oscillation frequency was significant in these cortical regions during audiovisual object encoding compared with single modality object encoding. These results suggest that local oscillations and interregional connectivity via theta activity play an important role during audiovisual object encoding and may contribute to the formation of working memory traces from multisensory items.https://www.frontiersin.org/articles/10.3389/fnhum.2021.614950/fullworking memoryaudiovisual objectencodingthetafunctional connectivityEEG |
| spellingShingle | Yuanjun Xie Yuanjun Xie Yanyan Li Haidan Duan Xiliang Xu Wenmo Zhang Wenmo Zhang Peng Fang Theta Oscillations and Source Connectivity During Complex Audiovisual Object Encoding in Working Memory Frontiers in Human Neuroscience working memory audiovisual object encoding theta functional connectivity EEG |
| title | Theta Oscillations and Source Connectivity During Complex Audiovisual Object Encoding in Working Memory |
| title_full | Theta Oscillations and Source Connectivity During Complex Audiovisual Object Encoding in Working Memory |
| title_fullStr | Theta Oscillations and Source Connectivity During Complex Audiovisual Object Encoding in Working Memory |
| title_full_unstemmed | Theta Oscillations and Source Connectivity During Complex Audiovisual Object Encoding in Working Memory |
| title_short | Theta Oscillations and Source Connectivity During Complex Audiovisual Object Encoding in Working Memory |
| title_sort | theta oscillations and source connectivity during complex audiovisual object encoding in working memory |
| topic | working memory audiovisual object encoding theta functional connectivity EEG |
| url | https://www.frontiersin.org/articles/10.3389/fnhum.2021.614950/full |
| work_keys_str_mv | AT yuanjunxie thetaoscillationsandsourceconnectivityduringcomplexaudiovisualobjectencodinginworkingmemory AT yuanjunxie thetaoscillationsandsourceconnectivityduringcomplexaudiovisualobjectencodinginworkingmemory AT yanyanli thetaoscillationsandsourceconnectivityduringcomplexaudiovisualobjectencodinginworkingmemory AT haidanduan thetaoscillationsandsourceconnectivityduringcomplexaudiovisualobjectencodinginworkingmemory AT xiliangxu thetaoscillationsandsourceconnectivityduringcomplexaudiovisualobjectencodinginworkingmemory AT wenmozhang thetaoscillationsandsourceconnectivityduringcomplexaudiovisualobjectencodinginworkingmemory AT wenmozhang thetaoscillationsandsourceconnectivityduringcomplexaudiovisualobjectencodinginworkingmemory AT pengfang thetaoscillationsandsourceconnectivityduringcomplexaudiovisualobjectencodinginworkingmemory |