Presentation Information
[P2-32]Neural correlates of changes of mind and confidence in the judgement of elapsed time
*Chetan Desai1, Martin Wiener1 (1. George Mason University (United States of America))
Keywords:
decision-making,changes-of-mind,temporal metacognition
The ability to monitor and correct errors is essential for accurate timing. Recently, investigators have started probing confidence in temporal decisions as a means of understanding temporal metacognition (Fu, et al. 2023). However, few studies have investigated the EEG correlates of metacognitive inferences in time perception (Kononowicz, et al. 2019; Kononowicz & van Wassenhove, 2019). Separately, perceptual decision-making studies have found that, when given the option, subjects will shift their decisions from one choice to another, so-called "changes of mind” (Resulaj, et al. 2009; van Den Berg, et al. 2016). We have found that changes-of-mind also exist for temporal decisions (Wiener, et al. 2019). Here, we probed the EEG correlates of these changes-of-mind and confidence estimates in a suprasecond auditory temporal bisection task. Our initial analysis revealed that the late positive component of timing (LPCt), an EEG signal associated with post-decisional evidence in timing tasks (Wiener & Thompson, 2015; Ofir & Landau, 2022), is significantly lower on trials in which subjects changed their minds about their decision. Additional analyses will examine the link between this shift in LPCt amplitude and decision confidence, both at the neural and behavioral level, as well as if changes-of-mind can be predicted by pre-decisional evidence accumulation.