INSIDE-OUT: An Innovative Sound Technology for Altering Interoceptive Signals

Cyberpsychology Behavior and Social Networking, Journal Year: 2023, Volume and Issue: 26(5), P. 386 - 388

Published: April 24, 2023

Language: Английский

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Exposure to false cardiac feedback alters pain perception and anticipatory cardiac frequency

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: June 9, 2023

Abstract The experience of pain, like other interoceptive processes, has recently been conceptualized in light predictive coding models and the free energy minimization framework. In these views, brain integrates sensory, proprioceptive, signals to generate probabilistic inferences about upcoming events, which heavily shape both state perception our inner body. Here we ask whether it is possible induce pain expectations by providing false faster (vs. slower) acoustic cardiac feedback before administering electrical cutaneous shocks, test will body’s physiological toward prior predictions. Results confirmed that elicited affected perceptual judgments response. Perceptual were biased towards expected level such participants illusorily perceived identical noxious stimuli as more intense unpleasant. Physiological changes mirrored predicted participants’ actual response anticipation showed a deceleration heart rates, coherently with well-known orienting threatening (Experiment 1). control experiment, modulations dramatically reduced when reproduced an exteroceptive, instead 2). These findings show for first time manipulation can be terms inference modulates body, thereby actively generating autonomic consequences have predicted.

Language: Английский

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Exploring Aesthetic Chills as a Biomarker in Depression

Published: July 19, 2023

Background. Major Depression Disorder (MDD) is a pressing public health crisis affecting 121 million individuals globally and contributing to 850,000 annual deaths. Few studies investigate the mechanisms underlying positive emotion dysregulation in depression. This study aims bridge this gap provide novel methods for elicitation of affect its brain, body, behavioral mechanisms. Methods. ChillsDB, an open-source database validated audiovisual stimuli, was used identify stimuli. A total 193 participants took part experiment, including 74 males, with mean age 41.5 (SD=15.4). The Beck Inventory (BDI) Snaith-Hamilton Pleasure Scale (SHAPS) were screen depression (cut-off at 19) anhedonia 32). All groups balanced terms gender age. 78 clinically diagnosed depression, 46 them having BDI score larger than 19. Additionally, 30 subjects anhedonic (SHAPS>32) included. remaining 84 did not have history clinical or mental issues. Results. intensity chills significantly lower depressed group compared that healthy (p = 0.037). who classified as mildly associated higher odds (Estimate 1.373). scores between reported experiencing those not. Conclusions. findings important implications understanding neurophysiological responsible highlight need further investigation area.

Language: Английский

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Heart Is Deceitful Above All Things: threat expectancy induces the illusory perception of increased heartrate

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown

Published: Sept. 8, 2022

Abstract The perception of the internal milieu is thought to reflect beliefs and prior knowledge about expected state body, rather than only actual interoceptive states. This study investigated whether heartbeat could be illusorily distorted towards subjective beliefs, such that threat expectations suffice induce a false increased frequency. Participants were instructed focus on their cardiac activity report heartbeat, either tapping along it (Experiment 1) or silently counting 2) while ECG was recorded. While completing this task, different cues provided valid predictive information intensity an upcoming cutaneous stimulation (high- vs. low- pain). Results showed participants heart rate increase over anticipation high- low-pain stimuli belief perceptually instantiated, as shown by reports. Importantly, perceived not mirrored real rate. Perceptual modulations absent when executed same task but with exteroceptive stimulus 3). findings reveal, for first time, illusion heartbeats elicited expectancy shed new light processes through lenses Bayesian processes, providing tantalizing insights into how illusory phenomena may intersect recognition regulation people’s

Language: Английский

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