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Formalisation of Damasio’s Theory of Emotion, Feeling and Core Consciousness
"... This paper contributes an analysis and formalisation of Damasio’s theory on core consciousness. Three important concepts in this theory are ‘emotion’, ‘feeling’, and ‘feeling a feeling ’ (or core consciousness). In particular, a simulation model is described of the dynamics of basic mechanisms leadi ..."
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This paper contributes an analysis and formalisation of Damasio’s theory on core consciousness. Three important concepts in this theory are ‘emotion’, ‘feeling’, and ‘feeling a feeling ’ (or core consciousness). In particular, a simulation model is described of the dynamics of basic mechanisms leading via emotion and feeling to core consciousness, and dynamic properties are formally specified that hold for these dynamics at a more global level. These properties have been automatically checked for the simulation model. Moreover, a formal analysis is made of relevant notions of representation used by Damasio. As part of this analysis, specifications of representation relations have been verified and confirmed against the simulation model. 1
Neuroanatomical correlates of brainstem coma
- Brain
, 2003
"... The brainstem tegmentum, including the reticular for-mation, contains distinct nuclei, each of which has a set of chemical, physiological and anatomical features. Damage to the brainstem tegmentum is known to cause coma, the most radical disturbance of consciousness. However, it has remained unclear ..."
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The brainstem tegmentum, including the reticular for-mation, contains distinct nuclei, each of which has a set of chemical, physiological and anatomical features. Damage to the brainstem tegmentum is known to cause coma, the most radical disturbance of consciousness. However, it has remained unclear which nuclei within the tegmentum are crucial for the maintenance of con-sciousness in humans. Accordingly, we initiated a retro-spective study of MRIs obtained from 47 patients with brainstem stroke. The lesion boundaries were charted on patient MRIs and transferred onto a corresponding series of 4.7 T MRIs obtained from a control brainstem specimen that later was cut on a freezing microtome and analysed histologically. In addition, medical charts and available post-mortem materials were used to
Killing the Observer
, 2005
"... Phenomenal consciousness is often thought to involve a first-person perspective or point of view which makes available to the subject categorically private, first-person facts about experience, facts that are irreducible to third-person physical, functional, or representational facts. This paper se ..."
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Cited by 8 (0 self)
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Phenomenal consciousness is often thought to involve a first-person perspective or point of view which makes available to the subject categorically private, first-person facts about experience, facts that are irreducible to third-person physical, functional, or representational facts. This paper seeks to show that on a representational account of consciousness, we don’t have an observational perspective on experience that gives access to such facts, although our representational limitations and the phenomenal structure of consciousness make it strongly seem that we do. Qualia seem intrinsic and functionally arbitrary, and thus categorically private, because they are first-order sensory representations that are not themselves directly represented. Further, the representational architecture that on this account instantiates conscious subjectivity helps to generate the intuition of observerhood, since the phenomenal subject may be construed as outside, not within, experience. Once the seemings of private phenomenal facts and the observing subject are discounted, we can understand consciousness as a certain variety of neurally instantiated, behaviour controlling content, that constituted by an integrated representation of the organism in the world. Neuroscientific research suggests that consciousness and its characteristic behavioural capacities are supported by widely distributed but highly integrated neural processes involving communication between multiple functional sub-systems in the brain. This ‘global workspace’ may be the brain’s physical realization of the representational architecture that constitutes consciousness.
Binocular rivalry and the cerebral hemispheres : with a note on the correlates and constitution of visual consciousness
- Brain and Mind
, 2001
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Review Clinical review: Prognostic value of magnetic resonance imaging in acute brain injury and coma
, 2007
"... Progress in management of critically ill neurological patients has led to improved survival rates. However, severe residual neurological impairment, such as persistent coma, occurs in some survivors. This raises concerns about whether it is ethically appropriate to apply aggressive care routinely, w ..."
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Progress in management of critically ill neurological patients has led to improved survival rates. However, severe residual neurological impairment, such as persistent coma, occurs in some survivors. This raises concerns about whether it is ethically appropriate to apply aggressive care routinely, which is also associated with burdensome long-term management costs. Adapting the management approach based on long-term neurological prognosis represents a major challenge to intensive care. Magnetic resonance imaging (MRI) can show brain lesions that are not visible by computed tomography, including early cytotoxic oedema after ischaemic stroke, diffuse axonal injury after traumatic brain injury and cortical laminar necrosis after cardiac arrest. Thus, MRI increases the accuracy of neurological diagnosis in critically ill patients. In addition, there is some evidence that MRI may have
The Human Connectome Project and beyond: Initial applications of 300mT/m gradients
- Neuroimage
, 2013
"... The engineering of a 3 T human MRI scanner equipped with 300 mT/m gradients -the strongest gradients ever built for an in vivo human MRI scanner -was a major component of the NIH Blueprint Human Connectome Project (HCP). This effort was motivated by the HCP's goal of mapping, as completely as ..."
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The engineering of a 3 T human MRI scanner equipped with 300 mT/m gradients -the strongest gradients ever built for an in vivo human MRI scanner -was a major component of the NIH Blueprint Human Connectome Project (HCP). This effort was motivated by the HCP's goal of mapping, as completely as possible, the macroscopic structural connections of the in vivo healthy, adult human brain using diffusion tractography. Yet, the 300 mT/m gradient system is well suited to many additional types of diffusion measurements. Here, we present three initial applications of the 300 mT/m gradients that fall outside the immediate scope of the HCP. These include: 1) diffusion tractography to study the anatomy of consciousness and the mechanisms of brain recovery following traumatic coma; 2) q-space measurements of axon diameter distributions in the in vivo human brain and 3) postmortem diffusion tractography as an adjunct to standard histopathological analysis. We show that the improved sensitivity and diffusion-resolution provided by the gradients are rapidly enabling human applications of techniques that were previously possible only for in vitro and animal models on small-bore scanners, thereby creating novel opportunities to map the microstructure of the human brain in health and disease.
Simulation and Representation of Body, Emotion, and Core Consciousness
- In: Proceedings of the AISB 2005 Symposium on Next Generation Approaches to Machine Consciousness: Imagination, Development, Intersubjectivity, and Embodiment, 2005
, 2005
"... This paper contributes an analysis and formalisation of Damasio’s theory on core consciousness. Three important concepts in this theory are “emotion”, “feeling”, and “feeling a feeling ” (or core consciousness). In particular, a simulation model is described of the neural dynamics leading via emotio ..."
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Cited by 2 (1 self)
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This paper contributes an analysis and formalisation of Damasio’s theory on core consciousness. Three important concepts in this theory are “emotion”, “feeling”, and “feeling a feeling ” (or core consciousness). In particular, a simulation model is described of the neural dynamics leading via emotion and feeling to core consciousness, and dynamic properties are formally specified that hold for these dynamics. These properties have been automatically checked for the simulation traces. Moreover, a formal analysis is made and verified of relevant notions of representation. 1
Consciousness and Agency: The Importance of Self- Organized Action
"... Abstract. Following the tracks of Ryle and based upon the theory of complex systems, we shall develop a characterization of action-based consciousness as an embodied, embedded, selforganized process in which action and dispositions occupy a special place. From this perspective, consciousness is not ..."
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Abstract. Following the tracks of Ryle and based upon the theory of complex systems, we shall develop a characterization of action-based consciousness as an embodied, embedded, selforganized process in which action and dispositions occupy a special place. From this perspective, consciousness is not a unique prerogative of humans, but it is spread all around, throughout the evolution of life. We argue that artificial systems such as robots currently lack the genuine embodied embeddedness that allows the type of self-organization that is relevant to consciousness. Sommario. Seguendo la linea tracciata da Ryle e basata sulla teorie dei sistemi complessi, svilupperemo una caratterizzazione della coscienza basata sull’azione come un processo incarnato, situato e auto organizzante nel quale le azioni e le disposizioni occupano un ruolo decisivo. Da questo punto di vista, la coscienza non è una prerogativa esclusiva degli esseri umani, ma è diffusa nel mondo naturale grazie ai processi evolutivi. Noi sosteniamo che i sistemi artificiali come i robot attualmente sono carenti del tipo di relazione con la corporeità e con l’ambiente che consente quel tipo di auto-organizzazione indispensabile per l’emergenza della coscienza. 1
Cognition
, 2006
"... This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or sel ..."
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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier’s archiving and manuscript policies are encouraged to visit:
