Connectivity of Superior Temporal Sulcus During Target Detection

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Authors

PAIL Martin DUFKOVÁ Petra MAREČEK Radek ZELINKOVÁ Jana MIKL Michal SHAW Daniel Joel BRÁZDIL Milan

Year of publication 2016
Type Article in Periodical
Magazine / Source Journal of Psychophysiology
MU Faculty or unit

Faculty of Medicine

Citation
Doi http://dx.doi.org/10.1027/0269-8803/a000151
Field Neurology, neurosurgery, neurosciences
Keywords fMRI; oddball task; psychophysiological interaction; connectivity; superior temporal sulcus
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Description The aim of the current research was to study functional connectivity (FC) of the right superior temporal sulcus (rSTS) during visual target stimulus processing. This structure is presumed to be crucial in social cognition, but evidently participates in target detection as well. Twenty subjects participated in functional magnetic resonance examination for studying FC. We used psychophysiological interaction (PPI) analysis of data acquired during the visual oddball task. During the visual oddball task rSTS had increased connectivity bilaterally with structures involved in memory operations (mesiotemporal cortices and basal ganglia) and evaluative processing related to decision making (left anterior cingulate cortex). Moreover, we revealed decreased connectivity of rSTS with structures involved in attentional processes (right dorsolateral prefrontal cortex (DLPFC) and the posterior area with bilateral parietal cortex). Based on our results we hypothesize that in the detection of rare events, during visual information processing, rSTS is involved within neuronal networks related to attention, but also at later stages of stimuli processing.
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