Polich updating p300 Erotic female chatbot
Effect size estimates were computed using the restricted maximum likelihood model.One hypothesis links the P300 to activation of the locus ceruleus, a noradrenergic center of the brainstem found in the pons .In this view, the role of this noradrenergic circuit is to potentiate significant stimuli for executive decision making.While the neural substrates of this ERP still remain hazy, the reproducibility of this signal makes it a common choice for psychological tests in both the clinic and the laboratory. The P300 wave itself is thought to be comprised of two 'wavelets' known as P3a and P3b signals.
These components respond individually to different stimuli, and it has been suggested that the P3a wave "originates from stimulus-driven frontal attention mechanisms during task processing, whereas P3b originates from temporal–parietal activity associated with attention and appears related to subsequent memory processing." .
These distinct regions are proposed to be separate processing sites for “target” and “distracter” stimuli in the oddball paradigm.