Interoceptive signals, brain dynamics, and subjectivity

Author(s):  
Mariana Babo-Rebelo ◽  
Catherine Tallon-Baudry

The self has long been hypothesized to be rooted in the neural monitoring of bodily signals. We propose here to focus on visceral inputs, which present some key characteristics. Inputs from the heart or the gastrointestinal tract are continuously produced, and can reach multiple cortical targets. In addition, cardiac inputs elicit a neural response at each heartbeat that can be recorded non-invasively in humans, even in the absence of measurable changes in bodily state. We review the recent experimental evidence that neural responses to heartbeats are related to the self, in situations where the self is explicit or reflective (bodily awareness, thinking about oneself) but also when the self is implicit (the self as the agent, the self experiencing a visual input). These results are compatible with our proposal that the integration of visceral signals generates a subject-centered reference frame underlying different facets of the self.

2016 ◽  
Vol 371 (1708) ◽  
pp. 20160004 ◽  
Author(s):  
Mariana Babo-Rebelo ◽  
Nicolai Wolpert ◽  
Claude Adam ◽  
Dominique Hasboun ◽  
Catherine Tallon-Baudry

The self has been proposed to be rooted in the neural monitoring of internal bodily signals and might thus involve interoceptive areas, notably the right anterior insula (rAI). However, studies on the self consistently showed the involvement of midline default network (DN) nodes, without referring to visceral monitoring. Here, we investigate this apparent discrepancy. We previously showed that neural responses to heartbeats in the DN encode two different self-dimensions, the agentive ‘I’ and the introspective ‘Me’, in a whole-brain analysis of magnetoencephalography (MEG) data. Here, we confirm and anatomically refine this result with intracranial recordings (intracranial electroencephalography, iEEG). In two patients, we show a parametric modulation of neural responses to heartbeats by the self-relatedness of thoughts, at the single trial level. A region-of-interest analysis of the insula reveals that MEG responses to heartbeats in the rAI encode the ‘I’ self-dimension. The effect in rAI was weaker than in the DN and was replicated in iEEG data in one patient out of two. We propose that a common mechanism, the neural monitoring of cardiac signals, underlies the self in both the DN and rAI. This might reconcile studies on the self highlighting the DN, with studies on interoception focusing on the insula. This article is part of the themed issue ‘Interoception beyond homeostasis: affect, cognition and mental health’.


PMLA ◽  
1959 ◽  
Vol 74 (4-Part1) ◽  
pp. 464-469
Author(s):  
Michael Fixler

In march of 1890, after a preparatory experience with Madame Blavatsky's Theosophical Society, W. B. Yeats joined the Hermetic Students of the Golden Dawn. Like Joris-Karl Huysmans, who at about this time became interested in the activities of the French counterpart of the Golden Dawn, “Le Grand Ordre Kabbalistique du Rose Croix,” Yeats's interests were largely aroused by the willingness of the members of the group to experiment with magical practices. Where Yeats, however, committed himself by oaths and rituals to a cult which pretended to be the guardian of ancient insights into the super-sensory life, Huysmans stood apart, first skeptical, then fascinated, and finally outraged. The eccentric MacGregor Mathers headed the London Rosicrucians, and he and his French wife, the sister of Henri Bergson, were acquainted with all the principal figures involved with the slightly older French order. The latter had been founded in 1888 by Sâr Joséphin Péladan and the self-styled nobleman Stanislas de Guaita. The French group existed on the shady fringe of clerical politics in the hostile rationalism of the early Third Republic, and it was in search of documentary material for a novel about this fantastic circle of clerical Royalists that Huysmans was first drawn to them. Like Saul who only sought lost asses, this quest led him, as he came to believe, to God's grace.Before he became a Catholic Huysmans was, in effect, something of a Manichean. As Yeats did, he sought experimental evidence to confirm the existence of opposing forces of good and evil, and when he had this evidence he rejected forcefully the Devil through whom he had found God. Yeats was more equivocal. The inversion of values in Huysmans' A rebours, and of ritual in his Là-bas never confounded or reconciled the opposition of good and evil and of false and true worship, as Yeats tried to do in his Rosicrucian stories of 1896. But then Huysmans was never so deeply involved as Yeats in constructing out of the farrago of late nineteenth-century occult beliefs a systematic basis for his life. The Rosicrucian Golden Dawn did provide the beginnings for such a systematic basis, and in his three stories of 1896, “The Tables of the Law,” “Rosa Alchemica,” and “The Adoration of the Magi,” Yeats draws on the beliefs and rituals of his cult. It seems to me that there are elements in the first two of these Rosicrucian stories which have curious affinities to the writings of Huysmans, and these become significant in the context of other relations between the two writers.


2017 ◽  
Author(s):  
Jakob Hohwy ◽  
John Michael

We use a general computational framework for brain function to develop a theory of the self. The theory is that the self is an inferred model of endogenous, deeply hidden causes of behavior. The general framework for brain function on which we base this theory is that the brain is fundamentally an organ for prediction error minimization.There are three related parts to this project. In the first part (Sections 2-3), we explain how prediction error minimization must lead to the inference of a network of deeply hidden endogenous causes. The key concept here is that prediction error minimization in the long term approximates hierarchical Bayesian inference, where the hierarchy is critical to understand the place of the self, and the body, in the world.In the second part (Sections 4-5), we discuss why such a set of hidden endogenous causes should qualify as a self. We show how a comprehensive prediction error minimization account can accommodate key characteristics of the self. It turns out that, though the modelled endogenous causes are just some among other inferred causes of sensory input, the model is special in being, in a special sense, a model of itself.The third part (Sections 6-7) identifies a threat from such self-modelling: how can a self-model be accurate if it represents itself? We propose that we learn to be who we are through a positive feedback loop: from infancy onward, humans apply agent-models to understand what other agents are up to in their environment, and actively align themselves with those models. Accurate self-models arise and are sustained as a natural consequence of humans’ skill in modeling and interacting with each other. The concluding section situates this inferentialist yet realist theory of the self with respect to narrative conceptions of the self.


1999 ◽  
Vol 197 (3) ◽  
pp. 612-615 ◽  
Author(s):  
U.V Desnica ◽  
I.D Desnica-Franković ◽  
R Magerle ◽  
A Burchard ◽  
M Deicher

2017 ◽  
pp. 153-176 ◽  
Author(s):  
Tahseen Kazi

I propose in this paper that Foucault’s interest in parrhesia as a “technique of the self,” particularly in his reading of Cynic parrhesia, can be fruitfully taken as an exemplar for new political thought on leadership. I make my case by comparing parrhesia with Weber’s charisma, which is the only force Weber allows for inserting new valuations into traditional and rational-legal legitimate dominations. I propose that charisma and parrhesia not only share several key characteristics, but express an overabundance of identities. Although it is rarely acknowledged, I propose that this should hardly be surprising given Foucault’s longstanding interest in Weber’s work. Foucault’s governmentality can be productively set next to Weber’s psycho-sociology of modern man, Menschentum, to reveal the parallel courses taken by these two thinkers on the modern predicament. Both share a critical curiosity – one that revolves around Kant’s presentation in “What is Enlightenment?” – about life, and about seeing how we have come to be how we are as a philosophical problem. Yet, even with all of their parallels, particularly on the subject of leadership, the staggering difference between Foucault and Weber is that while Weber approached charisma as a possible therapy to the problem of the Menschentum being unable to derive new valuations from his rational-legal calculations, Foucault approached parrhesia by looking for techniques for confronting disciplined and biopolitical subjects within society with dangerous truths. Whereas conventional wisdom may presume that it is at such points as Weber’s charismatic leadership that Weber and Foucault would part ways, careful study shows that leadership is a point of connection between these two thinkers.


1980 ◽  
Vol 60 (2) ◽  
pp. 205-221 ◽  
Author(s):  
P. M. KENNEDY ◽  
L. P. MILLIGAN

Urea transferred from the blood to the digestive tract of ruminants is potentially an important source of nitrogen for microbial growth in the reticulorumen and hind gut. Early attempts to assess the quantitative importance of urea transfer did not distinguish between its reticuloruminal and hind gut components. However, recent advances in tracer methodology have facilitated this partition, and a number of estimates have been made, principally using sheep on roughage diets. For some roughage diets, the rate of urea transfer to the rumen of sheep was small and was attributable to salivary urea, whereas for other diets substantial amounts of urea appeared to be entering the rumen across the rumen epithelium in addition to that carried in saliva. Regression analysis indicated that the rate of transfer of endogenous urea to the rumen of sheep given those diets was associated with the concentration of rumen ammonia and of plasma urea, and with the amount of organic matter digested in the rumen. Experimental evidence supporting the validity of this concept is discussed. Relationships are presented which show that the clearance of plasma urea to the rumen is inversely proportional to the concentration of rumen ammonia in both sheep and cattle, but that clearance is increased by the addition of grain or sucrose to the diet. It is concluded that transfer of urea across the rumen epithelium may contribute significantly to the nitrogen economy of the microorganisms, but the mechanism by which such transfer is controlled by the ruminant remains obscure.


NeuroImage ◽  
2010 ◽  
Vol 49 (2) ◽  
pp. 1690-1698 ◽  
Author(s):  
Sara C. Verosky ◽  
Alexander Todorov
Keyword(s):  
The Self ◽  

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