dc.contributor.author
Velenosi, Lisa Alexandria
dc.contributor.author
Wu, Yuan-Hao
dc.contributor.author
Schmidt, Timo Torsten
dc.contributor.author
Blankenburg, Felix
dc.date.accessioned
2021-02-12T12:53:52Z
dc.date.available
2021-02-12T12:53:52Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/29613
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-29357
dc.description.abstract
Working memory (WM) representations are generally known to be influenced by task demands, but it is not clear whether this extends to the somatosensory domain. One way to investigate the influence of task demands is with categorization paradigms, wherein either a single stimulus or an associated category is maintained in WM. In the somatosensory modality, category representations have been identified in the premotor cortex (PMC) and the intraparietal sulcus (IPS). In this study we used multivariate-pattern-analysis with human fMRI data to investigate whether the WM representations in the PMC, IPS or other regions are influenced by changing task demands. We ensured the task-dependent, categorical WM information was decorrelated from stimulus features by (1) teaching participants arbitrary, non-rule based stimulus groupings and (2) contrasting identical pairs of stimuli across experimental conditions, where either a single stimulus or the associated group was maintained in WM. Importantly, we also decoupled the decision and motor output from the WM representations. With these experimental manipulations, we were able to pinpoint stimulus-specific WM information to the left frontal and parietal cortices and context-dependent, group-specific WM information to the left IPS. By showing that grouped stimuli are represented more similarly in the Group condition than in the Stimulus condition, free from stimulus and motor output confounds, we provide novel evidence for the adaptive nature of somatosensory WM representations in the IPS with changing task-demands.
en
dc.format.extent
11 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Working memory
en
dc.subject
Somatosensory
en
dc.subject
Adaptive coding
en
dc.subject
Categorization
en
dc.subject
Multivariate
en
dc.subject.ddc
100 Philosophie und Psychologie::150 Psychologie::153 Kognitive Prozesse, Intelligenz
dc.title
Intraparietal sulcus maintains working memory representations of somatosensory categories in an adaptive, context-dependent manner
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
117146
dcterms.bibliographicCitation.doi
10.1016/j.neuroimage.2020.117146
dcterms.bibliographicCitation.journaltitle
NeuroImage
dcterms.bibliographicCitation.volume
221
dcterms.bibliographicCitation.url
https://doi.org/10.1016/j.neuroimage.2020.117146
refubium.affiliation
Erziehungswissenschaft und Psychologie
refubium.affiliation.other
Arbeitsbereich Neurocomputation and Neuroimaging
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1053-8119
refubium.resourceType.provider
WoS-Alert