Dynamic premotor-to-parietal interactions during spatial imagery.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Alexander T SackElia Formisano

Abstract

The neurobiological processes underlying mental imagery are a matter of debate and controversy among neuroscientists, cognitive psychologists, philosophers, and biologists. Recent neuroimaging studies demonstrated that the execution of mental imagery activates large frontoparietal and occipitotemporal networks in the human brain. These previous imaging studies, however, neglected the crucial interplay within and across the widely distributed cortical networks of activated brain regions. Here, we combined time-resolved event-related functional magnetic resonance imaging with analyses of interactions between brain regions (functional and effective brain connectivity) to unravel the premotor-parietal dynamics underlying spatial imagery. Participants had to sequentially construct and spatially transform a mental visual object based on either verbal or visual instructions. By concurrently accounting for the full spatiotemporal pattern of brain activity and network connectivity, we functionally segregated an early from a late premotor-parietal imagery network. Moreover, we revealed that the modality-specific information upcoming from sensory brain regions is first sent to the premotor cortex and then to the medial-dorsal parietal cor...Continue Reading

Citations

Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Samuel T Moulton, Stephen M Kosslyn
Oct 7, 2009·Journal of Cognitive Neuroscience·Tom A de GraafAlexander T Sack
Aug 22, 2012·Journal of Cognitive Neuroscience·Jihoon OhJaeseung Jeong
Feb 27, 2009·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Amber M LeaverJosef P Rauschecker
Feb 15, 2012·Neuroscience and Biobehavioral Reviews·Achille Pasqualotto, Michael J Proulx
Jul 3, 2009·Magnetic Resonance Imaging·Giancarlo ValenteElia Formisano
May 26, 2009·Behavioural Brain Research·Alexander T Sack
Apr 24, 2009·Human Brain Mapping·Andrew S KayserMark D'Esposito
Oct 1, 2009·The European Journal of Neuroscience·Zaira CattaneoJuha Silvanto
Mar 26, 2010·Human Brain Mapping·Maren BoeckerSiegfried Gauggel
Feb 7, 2013·The European Journal of Neuroscience·Mikhail ZvyagintsevKlaus Mathiak
May 27, 2014·Current Biology : CB·Petra VetterLars Muckli
Mar 24, 2015·Frontiers in Human Neuroscience·Li-Jun YinYi Hu
Jul 16, 2014·Neuropsychologia·Simon LaceyK Sathian
Jan 3, 2019·Human Brain Mapping·Giorgia Cona, Cristina Scarpazza
Feb 25, 2019·Cognitive Processing·Massimiliano PalmieroMarta Olivetti Belardinelli
Aug 23, 2016·Brain and Behavior·Toshihiko AsoHidenao Fukuyama
Jul 28, 2020·Brain Sciences·Massimiliano Palmiero, Laura Piccardi
Jul 25, 2017·Brain and Cognition·Aaron L GardonyHolly A Taylor

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