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Keywords Integrated information theory ...

Integrated information theory consciousness

https://read.qxmd.com/read/37727746/the-integrative-process-promoted-by-emdr-in-dissociative-disorders-neurobiological-mechanisms-psychometric-tools-and-intervention-efficacy-on-the-psychological-impact-of-the-covid-19-pandemic
#21
REVIEW
Andrea Poli, Francesco Cappellini, Josephine Sala, Mario Miccoli
Dissociative disorders (DDs) are characterized by a discontinuity in the normal integration of consciousness, memory, identity, emotion, perception, bodily representation, motor control, and action. The life-threatening coronavirus disease 2019 (COVID-19) pandemic has been identified as a potentially traumatic event and may produce a wide range of mental health problems, such as depression, anxiety disorders, sleep disorders, and DD, stemming from pandemic-related events, such as sickness, isolation, losing loved ones, and fear for one's life...
2023: Frontiers in Psychology
https://read.qxmd.com/read/37711314/lifeworlds-in%C3%A2-pain-a-principled-method-for%C3%A2-investigation-and%C3%A2-intervention
#22
REVIEW
Abby Tabor, Axel Constant
The experience of pain spans biological, psychological and sociocultural realms, both basic and complex, it is by turns necessary and devastating. Despite an extensive knowledge of the constituents of pain, the ability to translate this into effective intervention remains limited. It is suggested that current, multiscale, medical approaches, largely informed by the biopsychosocial (BPS) model, attempt to integrate knowledge but are undermined by an epistemological obligation, one that necessitates a prior isolation of the constituent parts...
2023: Neuroscience of Consciousness
https://read.qxmd.com/read/37661056/method-for-quantifying-arousal-and-consciousness-in-healthy-states-and-severe-brain-injury-via-eeg-based-measures-of-corticothalamic-physiology
#23
JOURNAL ARTICLE
S Assadzadeh, J Annen, L Sanz, A Barra, E Bonin, A Thibaut, M Boly, S Laureys, O Gosseries, P A Robinson
BACKGROUND: Characterization of normal arousal states has been achieved by fitting predictions of corticothalamic neural field theory (NFT) to electroencephalographic (EEG) spectra to yield relevant physiological parameters. NEW METHOD: A prior fitting method is extended to distinguish conscious and unconscious states in healthy and brain injured subjects by identifying additional parameters and clusters in parameter space. RESULTS: Fits of NFT predictions to EEG spectra are used to estimate neurophysiological parameters in healthy and brain injured subjects...
September 1, 2023: Journal of Neuroscience Methods
https://read.qxmd.com/read/37560334/on-the-non-uniqueness-problem-in%C3%A2-integrated-information-theory
#24
JOURNAL ARTICLE
Jake R Hanson, Sara I Walker
Integrated Information Theory (IIT) 3.0 is among the leading theories of consciousness in contemporary neuroscience. The core of the theory relies on the calculation of a scalar mathematical measure of consciousness, Φ, which is inspired by the phenomenological axioms of the theory. Here, we show that despite its widespread application, Φ is not a well-defined mathematical concept in the sense that the value it specifies is non-unique. To demonstrate this, we introduce an algorithm that calculates all possible Φ values for a given system in strict accordance with the mathematical definition from the theory...
2023: Neuroscience of Consciousness
https://read.qxmd.com/read/37533209/sharing-the-space-of-the-creature-intersubjectivity-as-a-lens-toward-mutual-human-wildlife-dignity
#25
JOURNAL ARTICLE
Donna J Perry
Human-wildlife coexistence is critical for sustainable and healthy ecosystems as well as to prevent human and wildlife suffering. In this paper, an intersubjective approach to human-wildlife interactions is proposed as a lens toward human decentering and emergent mutual evolution. The thesis is developed through a secondary data analysis of a research study on wildlife care and philosophical analysis using the work of Bernard Lonergan and Edmund Husserl. The study was conducted using the theory of transcendent pluralism, which is grounded in human and ecological dignity, including the dignity of beyond-human beings...
August 2, 2023: Nursing Inquiry
https://read.qxmd.com/read/37528279/a-theory-of-visibility-measures-in-the-dissociation-paradigm
#26
REVIEW
Thomas Schmidt, Melanie Biafora
Research on perception without awareness primarily relies on the dissociation paradigm, which compares a measure of awareness of a critical stimulus (direct measure) with a measure indicating that the stimulus has been processed at all (indirect measure). We argue that dissociations between direct and indirect measures can only be demonstrated with respect to the critical stimulus feature that generates the indirect effect, and the observer's awareness of that feature, the critical cue. We expand Kahneman's (Psychological Bulletin, 70, 404-425, 1968) concept of criterion content to comprise the set of all cues that an observer actually uses to perform the direct task...
August 1, 2023: Psychonomic Bulletin & Review
https://read.qxmd.com/read/37498741/the-non-specific-matrix-thalamus-facilitates-the-cortical-information-processing-modes-relevant-for-conscious-awareness
#27
JOURNAL ARTICLE
Eli J Müller, Brandon R Munn, Michelle J Redinbaugh, Joseph Lizier, Michael Breakspear, Yuri B Saalmann, James M Shine
The neurobiological mechanisms of arousal and anesthesia remain poorly understood. Recent evidence highlights the key role of interactions between the cerebral cortex and the diffusely projecting matrix thalamic nuclei. Here, we interrogate these processes in a whole-brain corticothalamic neural mass model endowed with targeted and diffusely projecting thalamocortical nuclei inferred from empirical data. This model captures key features seen in propofol anesthesia, including diminished network integration, lowered state diversity, impaired susceptibility to perturbation, and decreased corticocortical coherence...
July 25, 2023: Cell Reports
https://read.qxmd.com/read/37498717/from-racial-awakening-to-collective-action-asian-americans-pathways-to-activism-and-benevolent-support-during-covid-19
#28
JOURNAL ARTICLE
Doris F Chang, Nari Yoo, Christina Seowoo Lee, Aakriti Prasai, Sumie Okazaki
OBJECTIVES: In response to increased anti-Asian discrimination and violence during the COVID-19 pandemic, this study examined pathways from discrimination experiences to own-group collective action in a diverse sample of 689 Asian Americans. METHOD: Informed by theories of ethnoracial identity, critical consciousness, and collective action and utilizing structural equation modeling, we examined the associations among discrimination, psychological distress, critical awareness and motivation (CAM) to resist racism, and two types of own-group collective action: political activism and benevolent support...
July 27, 2023: Cultural Diversity & Ethnic Minority Psychology
https://read.qxmd.com/read/37407655/an-implementation-of-integrated-information-theory-in-resting-state-fmri
#29
JOURNAL ARTICLE
Idan E Nemirovsky, Nicholas J M Popiel, Jorge Rudas, Matthew Caius, Lorina Naci, Nicholas D Schiff, Adrian M Owen, Andrea Soddu
Integrated Information Theory was developed to explain and quantify consciousness, arguing that conscious systems consist of elements that are integrated through their causal properties. This study presents an implementation of Integrated Information Theory 3.0, the latest version of this framework, to functional MRI data. Data were acquired from 17 healthy subjects who underwent sedation with propofol, a short-acting anaesthetic. Using the PyPhi software package, we systematically analyze how Φmax , a measure of integrated information, is modulated by the sedative in different resting-state networks...
July 5, 2023: Communications Biology
https://read.qxmd.com/read/37342235/about-the-compatibility-between-the-perturbational-complexity-index-and%C3%A2-the-global-neuronal-workspace-theory-of%C3%A2-consciousness
#30
JOURNAL ARTICLE
Michele Farisco, Jean-Pierre Changeux
This paper investigates the compatibility between the theoretical framework of the global neuronal workspace theory (GNWT) of conscious processing and the perturbational complexity index (PCI). Even if it has been introduced within the framework of a concurrent theory (i.e. Integrated Information Theory), PCI appears, in principle, compatible with the main tenet of GNWT, which is a conscious process that depends on a long-range connection between different cortical regions, more specifically on the amplification, global propagation, and integration of brain signals...
2023: Neuroscience of Consciousness
https://read.qxmd.com/read/37316844/-but-what-if-you-miss-something-%C3%A2-factors-that-influence-medical-student-consideration-of-cost-in-decision-making
#31
JOURNAL ARTICLE
Emmanuel Tan, Wei Ming Ng, Poh Choong Soh, Daniel Tan, Jennifer Cleland
CONTEXT: Cost-conscious care is critical for healthcare sustainability but evidence suggests that most doctors do not consider cost in their clinical decision making. A critical step in changing this is understanding the barriers to encouraging behaviours and attitudes related to cost-conscious care. We therefore conducted a qualitative study to address the research question: what factors influence consideration of cost in emergency medicine (ED) clinical decision making? METHODS: This was a qualitative focus group study using patient vignettes to explore attitudes towards cost-conscious clinical decision making...
June 14, 2023: BMC Medical Education
https://read.qxmd.com/read/37275559/when-do-parts-form-wholes-integrated-information-as-the-restriction-on-mereological-composition
#32
JOURNAL ARTICLE
Kelvin J McQueen, Naotsugu Tsuchiya
Under what conditions are material objects, such as particles, parts of a whole object? This is the composition question and is a longstanding open question in philosophy. Existing attempts to specify a non-trivial restriction on composition tend to be vague and face serious counterexamples. Consequently, two extreme answers have become mainstream: composition (the forming of a whole by its parts) happens under no or all conditions. In this paper, we provide a self-contained introduction to the integrated information theory (IIT) of consciousness...
2023: Neuroscience of Consciousness
https://read.qxmd.com/read/37269478/the-qbit-theory-of-consciousness-information-correlation-and-coherence
#33
JOURNAL ARTICLE
Majid Beshkar
The ultimate goal of the QBIT theory is to provide a scientific solution to the problem of consciousness. The theory assumes that qualia (plural for quale) are real physical entities. Each quale is a physical system consisting of qubits bonded together by quantum entanglement. The qubits of a quale are so intimately bonded together that they collectively form a unified whole that is more than (and different from) the sum of its parts. A quale is a highly organized, coherent system. Organization and coherence are manifestations of information...
June 3, 2023: Integrative Psychological & Behavioral Science
https://read.qxmd.com/read/37265655/a-systematic-approach-to-brain-dynamics-cognitive-evolution-theory-of-consciousness
#34
JOURNAL ARTICLE
Sergey B Yurchenko
The brain integrates volition, cognition, and consciousness seamlessly over three hierarchical (scale-dependent) levels of neural activity for their emergence: a causal or 'hard' level, a computational (unconscious) or 'soft' level, and a phenomenal (conscious) or 'psyche' level respectively. The cognitive evolution theory (CET) is based on three general prerequisites: physicalism, dynamism, and emergentism, which entail five consequences about the nature of consciousness: discreteness, passivity, uniqueness, integrity, and graduation...
June 2023: Cognitive Neurodynamics
https://read.qxmd.com/read/37214949/time-resolved-network-control-analysis-links-reduced-control-energy-under-dmt-with-the-serotonin-2a-receptor-signal-diversity-and-subjective-experience
#35
S Parker Singleton, Christopher Timmermann, Andrea I Luppi, Emma Eckernäs, Leor Roseman, Robin L Carhart-Harris, Amy Kuceyeski
Psychedelics offer a profound window into the functioning of the human brain and mind through their robust acute effects on perception, subjective experience, and brain activity patterns. In recent work using a receptor-informed network control theory framework, we demonstrated that the serotonergic psychedelics lysergic acid diethylamide (LSD) and psilocybin flatten the brain's control energy landscape in a manner that covaries with more dynamic and entropic brain activity. Contrary to LSD and psilocybin, whose effects last for hours, the serotonergic psychedelic N,N-dimethyltryptamine (DMT) rapidly induces a profoundly immersive altered state of consciousness lasting less than 20 minutes, allowing for the entirety of the drug experience to be captured during a single resting-state fMRI scan...
May 12, 2023: bioRxiv
https://read.qxmd.com/read/37213564/brain-circuitry-of-consciousness-a-review-of-current-models-and-a-novel-synergistic-model-with-clinical-application
#36
JOURNAL ARTICLE
Theresa C Gammel, Leor N Alkadaa, Jordan R Saadon, Sabir Saluja, John Servider, Nathaniel A Cleri, Michael Egnor, Raphael P Davis, Chuan Huang, Yuri B Saalmann, Sima Mofakham, Charles B Mikell
How consciousness arises in the brain has important implications for clinical decision-making. We summarize recent findings in consciousness studies to provide a toolkit for clinicians to assess deficits in consciousness and predict outcomes after brain injury. Commonly encountered disorders of consciousness are highlighted, followed by the clinical scales currently used to diagnose them. We review recent evidence describing the roles of the thalamocortical system and brainstem arousal nuclei in supporting awareness and arousal and discuss the utility of various neuroimaging studies in evaluating disorders of consciousness...
June 2023: Neurosurg Pract
https://read.qxmd.com/read/37205987/separating-weak-integrated-information-theory-into-inspired-and-aspirational-approaches
#37
REVIEW
Angus Leung, Naotsugu Tsuchiya
Mediano et al. (The strength of weak integrated information theory. Trends Cogn Sci 2022; 26 : 646-55.) separate out strong and weak flavours of the integrated information theory (IIT) of consciousness. They describe 'strong IIT' as attempting to derive a universal formula for consciousness and 'weak IIT' as searching for empirically measurable correlates of aspects of consciousness. We put forward that their overall notion of 'weak IIT' may be too weak. Rather, it should be separated out to distinguish 'aspirational-IIT', which aims to empirically test IIT by making trade-offs to its proposed measures, and 'IIT-inspired' approaches, which adopt high-level ideas of IIT while dropping the mathematical framework it reaches through its introspective, first-principles approach to consciousness...
2023: Neuroscience of Consciousness
https://read.qxmd.com/read/37155704/feedback-information-sharing-in-the-human-brain-reflects-bistable-perception-in-the-absence-of-report
#38
JOURNAL ARTICLE
Andres Canales-Johnson, Lola Beerendonk, Srivas Chennu, Matthew J Davidson, Robin A A Ince, Simon van Gaal
In the search for the neural basis of conscious experience, perception and the cognitive processes associated with reporting perception are typically confounded as neural activity is recorded while participants explicitly report what they experience. Here, we present a novel way to disentangle perception from report using eye movement analysis techniques based on convolutional neural networks and neurodynamical analyses based on information theory. We use a bistable visual stimulus that instantiates two well-known properties of conscious perception: integration and differentiation...
May 8, 2023: PLoS Biology
https://read.qxmd.com/read/36981337/computing-the-integrated-information-of-a-quantum-mechanism
#39
JOURNAL ARTICLE
Larissa Albantakis, Robert Prentner, Ian Durham
Originally conceived as a theory of consciousness, integrated information theory (IIT) provides a theoretical framework intended to characterize the compositional causal information that a system, in its current state, specifies about itself. However, it remains to be determined whether IIT as a theory of consciousness is compatible with quantum mechanics as a theory of microphysics. Here, we present an extension of IIT's latest formalism to evaluate the mechanism integrated information (φ) of a system subset to discrete, finite-dimensional quantum systems (e...
March 3, 2023: Entropy
https://read.qxmd.com/read/36845431/disturbed-functional-connectivity-and-topological-properties-of-the-frontal-lobe-in-minimally-conscious-state-based-on-resting-state-fnirs
#40
JOURNAL ARTICLE
Hui Chen, Guofu Miao, Sirui Wang, Jun Zheng, Xin Zhang, Junbin Lin, Chizi Hao, Hailong Huang, Ting Jiang, Yu Gong, Weijing Liao
BACKGROUND: Patients in minimally conscious state (MCS) exist measurable evidence of consciousness. The frontal lobe is a crucial part of the brain that encodes abstract information and is closely related to the conscious state. We hypothesized that the disturbance of the frontal functional network exists in MCS patients. METHODS: We collected the resting-state functional near-infrared spectroscopy (fNIRS) data of fifteen MCS patients and sixteen age- and gender-matched healthy controls (HC)...
2023: Frontiers in Neuroscience
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