Article (Scientific journals)
Short-term memory and the left intraparietal sulcus: Focus of attention? Further evidence from a face short-term memory paradigm
Majerus, Steve; Bastin, Christine; Poncelet, Martine et al.
2007In NeuroImage, 35 (1), p. 353-367
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Keywords :
perception; Attention/physiology; Adult; Face; Female; Fixation, Ocular; Humans; Image Processing, Computer-Assisted; Magnetic Resonance Imaging; Male; Memory, Short-Term/physiology; Nerve Net/physiology; Oxygen/blood; Parietal Lobe/physiology; Photic Stimulation; Psychomotor Performance/physiology; Recognition (Psychology)/physiology
Abstract :
[en] This study explored the validity of an attentional account for the involvement of the left intraparietal sulcus (IPS) in visual STM tasks. This account considers that during STM tasks, the IPS acts as an attentional modulator, maintaining activation in long-term memory networks that underlie the initial perception and processing of the specific information to be retained. In a recognition STM paradigm, we presented sequences of unfamiliar faces and instructed the participants to remember different types of information: either the identity of the faces or their order of presentation. We hypothesized that, if the left IPS acts as an attentional modulator, it should be active in both conditions, but connected to different neural networks specialized in serial order or face identity processing. Our results showed that the left IPS was activated during both order and identity encoding conditions, but for different reasons. During order encoding, the left IPS showed functional connectivity with order processing areas in the right IPS, bilateral premotor and cerebellar cortices, reproducing earlier results obtained in a verbal STM experiment. During identity encoding, the left IPS showed preferential functional connectivity with right temporal, inferior parietal and medial frontal areas involved in detailed face processing. These results not only support an attentional account of left IPS involvement in visual STM, but given their similarity with previous results obtained for a verbal STM task, they further highlight the importance of the left IPS as an attentional modulator in a variety of STM tasks.
Disciplines :
Radiology, nuclear medicine & imaging
Theoretical & cognitive psychology
Neurosciences & behavior
Author, co-author :
Majerus, Steve  ;  Université de Liège - ULiège > Département des sciences cognitives > Psychopathologie cognitive
Bastin, Christine  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Poncelet, Martine ;  Université de Liège - ULiège > Département des sciences cognitives > Neuropsychologie du langage et des apprentissages
Van der Linden, Martial ;  Université de Liège - ULiège > Département des sciences cognitives > Psychopathologie cognitive
Salmon, Eric  ;  Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn.
Collette, Fabienne  ;  Université de Liège - ULiège > Département des sciences cognitives > Neuropsychologie
Maquet, Pierre  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Language :
English
Title :
Short-term memory and the left intraparietal sulcus: Focus of attention? Further evidence from a face short-term memory paradigm
Publication date :
March 2007
Journal title :
NeuroImage
ISSN :
1053-8119
eISSN :
1095-9572
Publisher :
Academic Press, San Diego, United States - California
Volume :
35
Issue :
1
Pages :
353-367
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 02 February 2009

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