Interoception can be broadly defined as the sense of signals originating within the body. As such, interoception is critical for our sense of embodiment, motivation, and well-being. And yet, despite its importance, interoception remains poorly understood within modern science. This paper reviews interdisciplinary perspectives on interoception, with the goal of presenting a unified perspective from diverse fields such as neuroscience, clinical practice, and contemplative studies. It is hoped that this integrative effort will advance our understanding of how interoception determines well-being, (...) and identify the central challenges to such understanding. To this end, we introduce an expanded taxonomy of interoceptive processes, arguing that many of these processes can be understood through an emerging predictive coding model for mind–body integration. The model, which describes the tension between expected and felt body sensation, parallels contemplative theories, and implicates interoception in a variety of affective and psychosomatic disorders. We conclude that maladaptive construal of bodily sensations may lie at the heart of many contemporary maladies, and that contemplative practices may attenuate these interpretative biases, restoring a person’s sense of presence and agency in the world. (shrink)

We become aware of our bodies interoceptively, by processing signals arising from within the body, and exteroceptively, by processing signals arising on or outside the body. Recent research highlights the importance of the interaction of exteroceptive and interoceptive signals in modulating bodily self-consciousness. The current study investigated the effect of social self-focus, manipulated via a video camera that was facing the participants and that was either switched on or off, on interoceptive sensitivity and on tactile perception ). The results indicated (...) a significant effect of self-focus on SSDT performance, but not on interoception. SSDT performance was not moderated by interoceptive sensitivity, although interoceptive sensitivity scores were positively correlated with false alarms, independently of self-focus. Together with previous research, our results suggest that self-focus may exert different effects on body perception depending on its mode . While interoception has been previously shown to be enhanced by private self-focus, the current study failed to find an effect of social self-focus on interoceptive sensitivity, instead demonstrating that social self-focus improves exteroceptive somatosensory processing. (shrink)

A recent strand in the philosophical literature on addiction emphasizes problems with diachronic self-control. Hanna Pickard, for example, argues that an important aspect of addiction consists in inability to identify with a non-addicted future self. This literature sits alongside another that treats addiction as the product of neural changes that “hijack” mechanisms of reward prediction, habit formation decision making and cognitive control. This hijacking literature originates in accounts that treat the neural changes characteristic of addiction as a brain disease. This (...) paper provides a framework based on predictive processing accounts of self-awareness that integrates the hijacking and diachronic accounts. I discuss a hijacking account proposed to explain disruption of addiction following lesion to the anterior insula cortex. I show how insula activity contributes to the type of identification implicated in diachronic accounts and how deactivation of the anterior insula can disrupt addiction by alienating the subject from her addictive tendencies. This is consistent with neural evidence but also incorporates the personal level features of addiction that are opaque to neural level explanation. (shrink)

The neuropeptide oxytocin has been suggested to facilitate social cognition and behavior. Therefore, published literature mainly focuses on the study of OT in a social context or in relation to others. But how we think, act and feel in social situations might strongly depend on our own state of being – the self. Thus, the present three studies examine the effects of OT on self-related processing and cognition. The first study explores the idea that OT might decrease self-related information processing, (...) even when individuals are specifically exposed to being self-aware. We could show that public self-awareness was increased when participants were placed in front of a mirror. Moreover, in the placebo group, lower scores in self-esteem were associated with increased self-awareness. This was not the case in the OT group in which self-esteem was unrelated to self-awareness. The results suggest that OT might function as a buffer against the negative consequences of enhanced self-related processing. The second study of this dissertation explores OT’s effects on self-related processing in a more physiological approach. Participants were to conduct a heartbeat perception task in front of a mirror and we hypothesized OT to inhibit interoceptive awareness. Usually, people become more attuned to bodily responses in front of a mirror due to increased self-awareness. In line with the concept of de-individuation under OT, we could show that heartbeat accuracy, and thus interoceptive accuracy, was increased among participants under placebo who were placed in front of the mirror, but no such effect occurred after treatment with OT. The third study provides empirical evidence testing OT’s effect on situational self-awareness when attentional focus is shifted, either to external sensory perception or explicit self-related cognition, using a categorization vs. introspection task. The results suggest that situational self-awareness was reduced after OT treatment compared to placebo, when participants had previously been instructed to introspect about their feelings. In sum, all findings support the idea of OT being significantly involved in self-related processing and cognition by enhancing de-individuation. (shrink)