Temporal-Spatial Neural Activation Patterns Linked to Perceptual Encoding of Emotional Salience

摘要: It is well known that we continuously filter incoming sensory information, selectively allocating attention to what important while suppressing distracting or irrelevant information. Yet questions remain about spatiotemporal patterns of neural processes underlying attentional biases toward emotionally significant aspects the world. One index affectively biased an emotional variant blink (AB) paradigm, which reveals enhanced perceptual encoding for salient over neutral stimuli under conditions limited executive attention. The present study took advantage high spatial and temporal resolution magnetoencephalography (MEG) investigate activation related targets in AB task. MEG data were collected participants performed a rapid stimulus visual presentation task two target embedded stream distractor words. first (T1) was number second (T2) either word. Behavioural results replicated previous findings greater accuracy than T2 source analyses showed orbitofrontal cortex, characterized by power theta alpha bands, dorsolateral prefrontal associated with successful relative These effects observed between 250 550 ms, latencies discrimination perceived from unperceived stimuli. suggest nodes both salience frontoparietal systems are modulation blink.