Search

Your search keyword '"Baumgardt, Frederik"' showing total 4 results
Start Over Author "Baumgardt, Frederik"
4 results on '"Baumgardt, Frederik"'

1. Beta-band neural variability reveals age-related dissociations in human working memory maintenance and deletion.

Author

Wen, Wen, Grover, Shrey, Hazel, Douglas, Berning, Peyton, Baumgardt, Frederik, Viswanathan, Vighnesh, Tween, Olivia, and Reinhart, Robert M. G.

Subjects
SHORT-term memory, MEMORY, OLDER people, COGNITION disorders, OSCILLATIONS
Abstract

Maintaining and removing information in mind are 2 fundamental cognitive processes that decline sharply with age. Using a combination of beta-band neural oscillations, which have been implicated in the regulation of working memory contents, and cross-trial neural variability, an undervalued property of brain dynamics theorized to govern adaptive cognitive processes, we demonstrate an age-related dissociation between distinct working memory functions—information maintenance and post-response deletion. Load-dependent decreases in beta variability during maintenance predicted memory performance of younger, but not older adults. Surprisingly, the post-response phase emerged as the predictive locus of working memory performance for older adults, with post-response beta variability correlated with memory performance of older, but not younger adults. Single-trial analysis identified post-response beta power elevation as a frequency-specific signature indexing memory deletion. Our findings demonstrate the nuanced interplay between age, beta dynamics, and working memory, offering valuable insights into the neural mechanisms of cognitive decline in agreement with the inhibition deficit theory of aging. Neuronal beta-band oscillations regulate the maintenance and deletion of working memory representations in humans. This study shows that the working memory performance of older adults can be predicted by beta-band neural variability during working memory deletion. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

3. RDA Research Data Collections WG Recommendations

Author

Weigel, Tobias, Almas, Bridget, Baumgardt, Frederik, Zastrov, Thomas, Schwardmann, Ulrich, Hellström,Maggie, Quinteros, Javier, and Fleischer, Dirk

Subjects
conceptual model, cross-institutional adoption, research data
Abstract

Recent efforts of the Research Data Alliance have established a conceptual model for the management of research data that promotes the use of digital objects, transcending the traditional notion of files and decoupling questions of access and use from location and storage. In this context, the need for building aggregations or collections of such objects has become an essential element. However, contemporary work on object collections focuses on primarily describing such collections through metadata, whereas research data management practice requires not only to describe collections, but to make them actionable by automated processes to be able to cope with ever increasing amounts and volumes of data. To this effect, this recommendation provides a comprehensive model for actionable collections and a technical interface specification to enable client-server interaction. It also reports on first adoption and implementation efforts across communities and institutions and provides perspectives on the use of data types in connection with collection structures, highlighting pathways for possible future work.

Published
2017

4. Recommendation on Research Data Collections

Author

Weigel, Tobias, Almas, Bridget, Baumgardt, Frederik, Zastrow, Thomas, Schwardmann, Ulrich, Hellström, Maggie, Quinteros, Javier, Fleischer, Dirk, and RDA Research Data Collections WG

Abstract

Recent efforts of the Research Data Alliance have established a conceptual model for the management of research data that promotes the use of digital objects, transcending the traditional notion of files and decoupling questions of access and use from location and storage. In this context, the need for building aggregations or collections of such objects has become an essential element. However, contemporary work on object collections focuses on primarily describing such collections through metadata, whereas research data management practice requires not only to describe collections, but to make them actionable by automated processes to be able to cope with ever increasing amounts and volumes of data. To this effect, this recommendation provides a comprehensive model for actionable collections and a technical interface specification to enable client-server interaction. It also reports on first adoption and implementation efforts across communities and institutions and provides perspectives on the use of data types in connection with collection structures, highlighting pathways for possible future work.

Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results