Wrinkles in subsecond time perception are synchronized to the heart.
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| Title: | Wrinkles in subsecond time perception are synchronized to the heart. |
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| Authors: | Sadeghi, Saeedeh (AUTHOR), Wittmann, Marc (AUTHOR), De Rosa, Eve (AUTHOR), Anderson, Adam K. (AUTHOR) |
| Source: | Psychophysiology. Aug2023, Vol. 60 Issue 8, p1-18. 18p. 1 Diagram, 2 Charts, 6 Graphs. |
| Subjects: | Time perception, Heart beat, Judgment (Psychology), Heart, Decision making, Bioenergetics |
| Abstract: | The role of the heart in the experience of time has been long theorized but empirical evidence is scarce. Here, we examined the interaction between fine‐grained cardiac dynamics and the momentary experience of subsecond intervals. Participants performed a temporal bisection task for brief tones (80–188 ms) synchronized with the heart. We developed a cardiac Drift‐Diffusion Model (cDDM) that embedded contemporaneous heart rate dynamics into the temporal decision model. Results revealed the existence of temporal wrinkles—dilation or contraction of short intervals—in synchrony with cardiac dynamics. A lower prestimulus heart rate was associated with an initial bias in encoding the millisecond‐level stimulus duration as longer, consistent with facilitation of sensory intake. Concurrently, a higher prestimulus heart rate aided more consistent and faster temporal judgments through more efficient evidence accumulation. Additionally, a higher speed of poststimulus cardiac deceleration, a bodily marker of attention, was associated with a greater accumulation of sensory temporal evidence in the cDDM. These findings suggest a unique role of cardiac dynamics in the momentary experience of time. Our cDDM framework opens a new methodological avenue for investigating the role of the heart in time perception and perceptual judgment. With the novel consideration of cardiac dynamics in the Drift‐Diffusion Model of temporal decision making, we found a close relationship between heart rate and the perception of millisecond durations. Heart rate before a brief stimulus and the subsequent cardiac orienting response explained components of the perceptual evidence accumulation process to determine the stimulus duration. These findings suggest a unique role for bioenergetics in subsecond time perception. [ABSTRACT FROM AUTHOR] |
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| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | The role of the heart in the experience of time has been long theorized but empirical evidence is scarce. Here, we examined the interaction between fine‐grained cardiac dynamics and the momentary experience of subsecond intervals. Participants performed a temporal bisection task for brief tones (80–188 ms) synchronized with the heart. We developed a cardiac Drift‐Diffusion Model (cDDM) that embedded contemporaneous heart rate dynamics into the temporal decision model. Results revealed the existence of temporal wrinkles—dilation or contraction of short intervals—in synchrony with cardiac dynamics. A lower prestimulus heart rate was associated with an initial bias in encoding the millisecond‐level stimulus duration as longer, consistent with facilitation of sensory intake. Concurrently, a higher prestimulus heart rate aided more consistent and faster temporal judgments through more efficient evidence accumulation. Additionally, a higher speed of poststimulus cardiac deceleration, a bodily marker of attention, was associated with a greater accumulation of sensory temporal evidence in the cDDM. These findings suggest a unique role of cardiac dynamics in the momentary experience of time. Our cDDM framework opens a new methodological avenue for investigating the role of the heart in time perception and perceptual judgment. With the novel consideration of cardiac dynamics in the Drift‐Diffusion Model of temporal decision making, we found a close relationship between heart rate and the perception of millisecond durations. Heart rate before a brief stimulus and the subsequent cardiac orienting response explained components of the perceptual evidence accumulation process to determine the stimulus duration. These findings suggest a unique role for bioenergetics in subsecond time perception. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00485772 |
| DOI: | 10.1111/psyp.14270 |
