Gastrointestinal Interoception in Eating Disorders: Charting a New Path

Current Psychiatry Reports, Journal Year: 2022, Volume and Issue: 24(1), P. 47 - 60

Published: Jan. 1, 2022

Abnormal interoception has been consistently observed across eating disorders despite limited inclusion in diagnostic conceptualization. Using the alimentary tract as well recent developments interoceptive neuroscience and predictive processing a guide, current review summarizes evidence of gastrointestinal dysfunction disorders.

Language: Английский

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Ingestible pills reveal gastric correlates of emotions

eLife, Journal Year: 2024, Volume and Issue: 13

Published: June 4, 2024

Although it is generally held that gastrointestinal (GI) signals are related to emotions, direct evidence for such a link currently lacking. One of the reasons why internal milieu GI system poorly investigated because visceral organs difficult access and monitor. To directly measure influence endoluminal markers activity on emotional experience, we asked group healthy male participants ingest pill measured pH, pressure, temperature their tract while they watched video clips consistently induced disgust, fear, happiness, sadness, or control neutral state. In addition objective physiological activity, subjective ratings perceived emotions (i.e. gastric, respiratory cardiac) sensations were recorded, as well changes in heart rate (HR), variability (HRV) spontaneous eyes blinks non-gastric behavioral autonomic experience. We found when observed fearful disgusting clips, reported perceive not only cardiac but also gastric sensations, nausea. Moreover, there was clear relation between physiology stomach emotions. Specifically, displayed, more acidic feelings disgust fear; less happiness. Complementing results deep realm, stimuli significant increase HRV compared scenarios, together with decrease HR. Our findings suggest contribute unique states ingestible pills may open new avenues exploring deep-body

Language: Английский

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The role of bodily self-consciousness in episodic memory of naturalistic events: an immersive virtual reality study

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Oct. 9, 2023

Abstract Recent studies suggest that the human body plays a critical role in episodic memory. Still, precise relationship between bodily self-consciousness (BSC) and memory formation of specific events, especially real-life contexts, remains topic ongoing research. The present study investigated BSC (EM) using immersive virtual reality (VR) technology. Participants were immersed an urban environment with naturalistic while their visuomotor feedback was manipulated three within-subjects conditions: Synchronous, Asynchronous, No-body. Our results show asynchronous not seeing one’s body, compared to synchronous feedback, decrease sense self-identification, self-location agency, presence. Moreover, navigating Asynchronous condition had detrimental impact on incidental event memory, perceptual details, contextual association, subjective remembering, consolidation. In contrast, participants No-Body only impaired egocentric spatial remembering at ten-day delay. We discuss these findings relation self-representation space during encoding. This sheds light complex interplay BSC, presence, processes, strengthens potential embodiment VR technology studying enhancing cognition.

Language: Английский

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Multimodal, Idiographic Ambulatory Sensing Will Transform our Understanding of Emotion

Affective Science, Journal Year: 2023, Volume and Issue: 4(3), P. 480 - 486

Published: Aug. 10, 2023

Emotions are inherently complex - situated inside the brain while being influenced by conditions body and outside in world resulting substantial variation experience. Most studies, however, not designed to sufficiently sample this variation. In paper, we discuss what could be discovered if emotion were systematically studied within persons 'in wild', using biologically-triggered experience sampling: a multimodal deeply idiographic approach ambulatory sensing that links mind across contexts over time. We outline rationale for approach, challenges its implementation widespread adoption, set out opportunities innovation afforded emerging technologies. Implementing these innovations will enrich method theory at frontier of affective science, propelling contextually study into future.

Language: Английский

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Probing corporeal awareness in women through virtual reality induction of embreathment illusion

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: April 23, 2024

We capitalized on the respiratory bodily illusion that we discovered in a previous study and called 'Embreathment' where showed breathing modulates corporeal awareness men. Despite relevance of issue, no such studies are available women. To bridge this gap, tested whether synchronization avatar-participant respiration patterns influenced females' awareness. collected cardiac interoceptive measures, administered body (dis)satisfaction questionnaires, tracked participants' menstrual cycles via mobile app. Our approach allowed us to characterize women, explore relationships between cycle, interoception image. found was as crucial visual appearance eliciting feelings ownership held greater significance than any other cue with respect agency both women Moreover, positive correlation cycle days image concerns, negative sensibility dissatisfaction were found, confirming women's arises during last is associated interoception. These findings have potential implications for alterations clinical conditions like eating disorders schizophrenia.

Language: Английский

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From feeling chilly to burning up: How thermal signals shape the physiological state of the body and impact physical, emotional, and social well-being

Neuroscience & Biobehavioral Reviews, Journal Year: 2025, Volume and Issue: unknown, P. 105992 - 105992

Published: Jan. 1, 2025

Language: Английский

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Cardiac afferent signals can facilitate visual dominance in binocular rivalry

eLife, Journal Year: 2024, Volume and Issue: 13

Published: April 11, 2024

Sensory signals from the body’s visceral organs (e.g. heart) can robustly influence perception of exteroceptive sensations. This interoceptive–exteroceptive interaction has been argued to underlie self-awareness by situating one’s perceptual awareness stimuli in context internal state, but studies probing cardiac influences on visual have yielded conflicting findings. In this study, we presented separate grating each subjects’ eyes as a classic binocular rivalry paradigm – measuring duration for which stimulus dominates perception. However, caused gratings ‘pulse’ at specific times relative real-time electrocardiogram, manipulating whether pulses occurred during systole, when baroreceptors signal brain that heart contracted, or diastole are silent. The influential ‘Baroreceptor Hypothesis’ predicts effect baroreceptive input should be uniformly suppressive. contrast, observed dominance durations increased systole-entrained stimuli, inconsistent with Baroreceptor Hypothesis. Furthermore, show cardiac-dependent is preserved subjects who at-chance discriminating between and diastole-presented interoceptive task, suggesting our results not dependent conscious access heartbeat

Language: Английский

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Understanding the neural bases of bodily self-consciousness: recent achievements and main challenges

Frontiers in Integrative Neuroscience, Journal Year: 2023, Volume and Issue: 17

Published: June 19, 2023

The last two decades have seen a surge of interest in the mechanisms underpinning bodily self-consciousness (BSC). Studies showed that BSC relies on several experiences (i.e., self-location, body ownership, agency, first-person perspective) and multisensory integration. aim this literature review is to summarize new insights novel developments into understanding neural bases BSC, such as contribution interoceptive signals overlap with conscious experience general higher-level forms self cognitive self). We also identify main challenges propose future perspectives need be conducted progress BSC. In particular, we point lack crosstalk cross-fertilization between subdisciplines integrative neuroscience better understand especially research animal models decipher networks systems neurotransmitters highlight for more causal evidence specific brain areas are instrumental generating studies tapping interindividual differences phenomenal their underlying mechanisms.

Language: Английский

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The thermoception task: a thermal imaging-based procedure for measuring awareness of changes in peripheral body temperature

Journal of Neurophysiology, Journal Year: 2023, Volume and Issue: 130(4), P. 1053 - 1064

Published: Aug. 2, 2023

Although thermal body signals provide crucial information about the state of an organism and changes in temperature may be a sign affective states (e.g., stress, pain, sexual arousal), research on awareness is limited. Here we developed task measuring peripheral (thermal interoception) compared it to classical heartbeat counting (cardiac interoception). With infrared light bulb delivered stimuli different intensities right hand 31 healthy participants. Thermal interoceptive accuracy, i.e., difference between participants' real perceived change temperature, showed good interindividual variability. We found that interoception did not correlate with (and was generally higher than) cardiac interoception, suggesting interceptive channels separate contributions bodily states. Moreover, results hint at great salience need for thermoregulation day-to-day life. Finally, accuracy associated self-reported ability regulate distress by focusing sensations. Our has potential significantly increase current knowledge role cognition behavior, particularly social emotional contexts.

Language: Английский

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Dissociative Symptoms and Interoceptive Integration

Current topics in behavioral neurosciences, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Language: Английский

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