Attention, in and Out: Scalp-Level and Intracranial EEG Correlates of Interoception and Exteroception.

ABSTRACT: Interoception, the monitoring of visceral signals, is often presumed to engage attentional mechanisms specifically devoted to inner bodily sensing. In fact, most standardized interoceptive tasks require directing attention to internal signals. However, most studies in the field have failed to compare attentional modulations between internally- and externally-driven processes, thus probing blind to the specificity of the former. Here we address this issue through a multidimensional approach combining behavioral measures, analyses of event-related potentials and functional connectivity via high-density electroencephalography, and intracranial recordings. In Study 1, 50 healthy volunteers performed a heartbeat detection task as we recorded modulations of the heartbeat-evoked potential (HEP) i

SUBMITTER: Garcia-Cordero I 

PROVIDER: S-EPMC5515904 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature