This episode, I talk to Saeedeh Sadeghi (Cornell University) and Irena Arslanova (Royal Holloway - London) about the heart and time perception. If you have ever been in a car accident, you might have felt as if time was slowing down. Some previous studies have tried to explain this phenomenon and argued that a state of 'arousal' may slow down time (subjectively). It's a bit more complicated than that. This year, Saeedeh and Irena published two papers showing how not average heart rate but heart dynamics on the sub-second scale influence time perception. Within a single cardiac cycle, time may contract and expand. We go in-depth on the methodology and findings of their papers and make links to interoception, predictive coding, meditation, breathing, psychoactive substances, and the many time perception theories out there. At the end, we also talk about science communication and their future research plans.Full show notes (with extra figures): https://akseliilmanen.wixsite.com/home/post/pod02Timestamps:((((((((((((((((((Saeedeh Sadeghi Twitter: @SdSadeghi1 Website Wrinkles in subsecond time perception are synchronized to the heart (2023) Affective experience in a virtual crowd regulates perceived travel time (2022)Irena Arslanova Twitter: @irena_arslanova Website Perceived time expands and contracts within each heartbeat (2023) Seeing Through Each Other’s Hearts: Inferring Others’ Heart Rate as a Function of Own Heart Rate Perception and Perceived Social Intelligence (2022)Josh Goheen LinkedIn From Lung to Brain: Respiration Modulates Neural and Mental Activity (2023)My BSc dissertation: Graph-driven comparative phenomenology of altered time perception in over 20,000 trip reports URLOther books/papers mentioned:Marc Wittmann (2017): Felt Time: The Science of How We Experience Time bookClaudia Hammond (2013): Time Warped: Unlocking the Mysteries of Time Perception bookCraig, 2009: Emotional moments across time: a possible neural basis for time perception in the anterior insulas paperSarigiannidis et al., 2020: Anxiety makes time pass quicker while fear has no effect paperCorcoran et al., 2023: Visceral afferent training in action paperReview paper on striatal beat frequency model (2016)Friston, 2018: Am I Self-Conscious? (Or Does Self-Organization Entail Self-Consciousness?) paperRoseboom et al., 2019: Activity in perceptual classification networks as a basis for human subjective time perception paperTsao et al., 2022: The neural bases for timing of durations paperBuonomano & Maass, 2009: State-dependent computations: spatiotemporal processing in cortical networks paperFollow me:For updates on new episode releases, follow me on Twitter.I welcome your comments, questions, and suggestions. Feel free to email me at [email protected]