Attention Supports Verbal Short-Term Memory via Competition between Dorsal and Ventral Attention Networks

Majerus, Steve; Attout, Lucie; D'Argembeau, Arnaud; Degueldre, Christian; Fias, Wim; Maquet, Pierre; Martinez Perez, Trecy; Stawarczyk, David; Salmon, Eric; Van der Linden, Martial; Phillips, Christophe; Balteau, Evelyne

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Title		Attention Supports Verbal Short-Term Memory via Competition between Dorsal and Ventral Attention Networks
Authors		Majerus, Steve Attout, Lucie D'Argembeau, Arnaud Degueldre, Christian Fias, Wim Maquet, Pierre Martinez Perez, Trecy Stawarczyk, David Salmon, Eric Van der Linden, Martial Phillips, Christophe Balteau, Evelyne show all authors [1 - 12]
Published in		Cerebral Cortex. 2012, vol. 22, no. 5, p. 1086-1097
Abstract		Interactions between the neural correlates of short-term memory (STM) and attention have been actively studied in the visual STM domain but much less in the verbal STM domain. Here we show that the same attention mechanisms that have been shown to shape the neural networks of visual STM also shape those of verbal STM. Based on previous research in visual STM, we contrasted the involvement of a dorsal attention network centered on the intraparietal sulcus supporting task-related attention and a ventral attention network centered on the temporoparietal junction supporting stimulus-related attention. We observed that, with increasing STM load, the dorsal attention network was activated while the ventral attention network was deactivated, especially during early maintenance. Importantly, activation in the ventral attention network increased in response to task-irrelevant stimuli briefly presented during the maintenance phase of the STM trials but only during low-load STM conditions, which were associated with the lowest levels of activity in the dorsal attention network during encoding and early maintenance. By demonstrating a trade-off between task-related and stimulus-related attention networks during verbal STM, this study highlights the dynamics of attentional processes involved in verbal STM.
Keywords		Adolescent — Adult — Attention/physiology — Brain/physiology — Brain Mapping — Female — Humans — Image Interpretation, Computer-Assisted — Magnetic Resonance Imaging — Male — Memory, Short-Term — Neural Pathways/physiology — Verbal Behavior/physiology — Young Adult
Identifiers		DOI: 10.1093/cercor/bhr174 PMID: 21765184
Full text		Article (Published version) (755 Kb) - Limited access to UNIGE
Structures		Faculté de psychologie et des sciences de l'éducation / Section de psychologie Centres et instituts / Centre interfacultaire des sciences affectives
Research group		Unité de psychopathologie et neuropsychologie cognitive (UPNC)
Citation (ISO format)		MAJERUS, Steve et al. Attention Supports Verbal Short-Term Memory via Competition between Dorsal and Ventral Attention Networks. In: Cerebral Cortex, 2012, vol. 22, n° 5, p. 1086-1097. https://archive-ouverte.unige.ch/unige:29502