Hemispherotomy: cortical islands of deep sleep in awake humans DOI Creative Commons
Marcello Massimini, Marcello Massimini,

Michele Colombo

и другие.

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Май 3, 2024

Abstract Hemispherotomy is a surgical procedure that disconnects large portion of the cerebral cortex from cortical and subcortical inputs in patients with severe refractory epilepsy. Whether disconnected - inaccessible to behavioral assessment supports consciousness remains unknown. Functional MRI studies have indicated preserved resting-state networks within hemisphere, raising possibility it may represent an ‘island awareness’. However, these can also persist unconscious states, such as anesthesia deep sleep. Here we assess capacity support by exploring its electrophysiological state, before after hemispherotomy, ten awake pediatric patients. After surgery, cortex–but not contralateral cortex–entered state dominated slow oscillations (<2 Hz) resembling those observed during sleep; further, spectral exponent, previously validated marker indexing 1/f-like decay power density, assumed values typically found brain-injured anesthetized adults. When compared reference sample, exponent were compatible wakefulness but attained levels typical sleep over cortex, suggesting island awareness.

Язык: Английский

Quantum Models of Consciousness from a Quantum Information Science Perspective DOI Creative Commons
Lea Gassab, Onur Pusuluk, Marco Cattaneo

и другие.

Entropy, Год журнала: 2025, Номер 27(3), С. 243 - 243

Опубликована: Фев. 26, 2025

This perspective explores various quantum models of consciousness from the viewpoint information science, offering potential ideas and insights. The under consideration can be categorized into three distinct groups based on level at which mechanics might operate within brain: those suggesting that arises electron delocalization microtubules inside neurons, proposing it emerges electromagnetic field surrounding entire neural network, positing originates interactions between individual neurons governed by neurotransmitter molecules. Our focus is particularly Posner model cognition, for we provide preliminary calculations preservation entanglement phosphate molecules geometric structure clusters. These findings valuable insights how theory enhance our understanding brain functions.

Язык: Английский

Процитировано

1
A measure centrality index for systematic empirical comparison of consciousness theories DOI Creative Commons
Robert Chis-Ciure, Lucía Melloni, Georg Northoff

и другие.

Neuroscience & Biobehavioral Reviews, Год журнала: 2024, Номер 161, С. 105670 - 105670

Опубликована: Апрель 12, 2024

Consciousness science is marred by disparate constructs and methodologies, making it challenging to systematically compare theories. This foundational crisis casts doubts on the scientific character of field itself. Addressing it, we propose a framework for comparing consciousness theories introducing novel inter-theory classification interface, Measure Centrality Index (MCI). Recognizing its gradient distribution, MCI assesses degree importance specific empirical measure has given theory. We apply probe how measures Global Neuronal Workspace Theory (GNW), Integrated Information (IIT), Temporospatial (TTC) would fare within context other two. demonstrate that direct comparison IIT, GNW, TTC meaningful valid some like Lempel-Ziv Complexity (LZC), Autocorrelation Window (ACW), possibly Mutual (MI). In contrast, problematic others anatomical physiological neural correlates (NCC) due their MCI-based differential weightings structure sum, introduce provide proof-of-principle systematic method comparisons, thereby addressing isolated evolution confirmatory bias issues in state-of-the-art neuroscience consciousness.

Язык: Английский

Процитировано

6
Is artificial consciousness achievable? Lessons from the human brain DOI Creative Commons
Michele Farisco, Kathinka Evers,

Jean‐Pierre Changeux

и другие.

Neural Networks, Год журнала: 2024, Номер 180, С. 106714 - 106714

Опубликована: Сен. 7, 2024

Язык: Английский

Процитировано

5
Taking consciousness for real: Increasing the ecological validity of the study of conscious vs. unconscious processes DOI Creative Commons
Liad Mudrik, Rony Hirschhorn,

Uri Korisky

и другие.

Neuron, Год журнала: 2024, Номер 112(10), С. 1642 - 1656

Опубликована: Апрель 22, 2024

The study of consciousness has developed well-controlled, rigorous methods for manipulating and measuring consciousness. Yet, in the process, experimental paradigms grew farther away from everyday conscious unconscious processes, which raises concern ecological validity. In this review, we suggest that field can benefit adopting a more approach, akin to other fields cognitive science. There, approach challenged some existing hypotheses, yielded stronger effects, enabled new research questions. We argue such move is critical studying consciousness, where tend be artificial small effect sizes are relatively prevalent. identify three paths doing so—changing stimuli settings, changing measures, questions themselves—and review works have already started implementing approaches. While acknowledging inherent challenges, call increasing validity studies.

Язык: Английский

Процитировано

4
Preliminaries to artificial consciousness: a multidimensional heuristic approach. DOI Creative Commons
Kathinka Evers, Michele Farisco, Raja Chatila

и другие.

Physics of Life Reviews, Год журнала: 2025, Номер 52, С. 180 - 193

Опубликована: Янв. 5, 2025

The pursuit of artificial consciousness requires conceptual clarity to navigate its theoretical and empirical challenges. This paper introduces a composite, multilevel, multidimensional model as heuristic framework guide research in this field. Consciousness is treated complex phenomenon, with distinct constituents dimensions that can be operationalized for study evaluating their replication. We argue provides balanced approach by avoiding binary thinking (e.g., conscious vs. non-conscious) offering structured basis testable hypotheses. To illustrate utility, we focus on "awareness" case study, demonstrating how specific pragmatically analyzed targeted potential instantiation. By breaking down the intricacies aligning them practical goals, lays groundwork robust strategy advance scientific technical understanding consciousness.

Язык: Английский

Процитировано

0
A Comprehensive Taxonomy of Machine Consciousness DOI
Ruilin Qin, Changle Zhou, Mengjie He

и другие.

Information Fusion, Год журнала: 2025, Номер 119, С. 102994 - 102994

Опубликована: Янв. 31, 2025

Язык: Английский

Процитировано

0
Consciousness Research Through Pain DOI Open Access
Dong Ah Shin, Min Cheol Chang

Healthcare, Год журнала: 2025, Номер 13(3), С. 332 - 332

Опубликована: Фев. 6, 2025

Background/Objectives: Consciousness is a complex and elusive phenomenon encompassing self-awareness, sensory perception, emotions, cognition. Despite significant advances in neuroscience, understanding the neural mechanisms underlying consciousness remains challenging. Pain, as subjective multifaceted experience, offers unique lens for exploring by integrating inputs with emotional cognitive dimensions. This study examines relationship between pain, highlighting potential of pain model interplay experience activity. Methods: Literature review. Results: Key theories consciousness, such Global Workspace Theory Integrated Information Theory, provide diverse frameworks interpreting emergence consciousness. Similarly, research emphasizes role interpretation context shaping experiences, reflecting broader challenges studies. The limitations current methodologies, particularly difficulty objectively measuring phenomena, like are also addressed. highlights importance correlates, particular focus on brain regions, anterior cingulate cortex insula, which bridge experiences. By analyzing shared attributes this underscores to serve measurable proxy research. Conclusions: Ultimately, it contributes unraveling philosophical underpinnings offering implications mental health treatment advancements artificial intelligence. fills critical gap leveraging reproducible combining theoretical empirical evidence, novel insights into how emerges from processes.

Язык: Английский

Процитировано

0
Functional Tests Guide Complex “Fidelity“ Tradeoffs in Whole-Brain Emulation DOI Creative Commons
Charl Linssen, Randal A. Koene

Journal of Ethics and Emerging Technologies, Год журнала: 2025, Номер 35(1), С. 1 - 14

Опубликована: Март 17, 2025

The human brain can be understood as a vast network of neurons connected via synapses, the state which is characterized by ion concentrations, phosphorylation patterns, receptor densities, etc. It plausible that mechanistic simulation at scale whole (a “whole-brain emulation“ or WBE) will made, raising questions about moral status and personal agency. Creating dynamical model presents complex tradeoff between better performance, data collection operating costs. To make informed scientific, engineering well decisions, set tests should defined, quantify performance individual on comprehensive repertoire skills in variety domains. "Fidelity" then defined measure how behavior corresponds with original individual, respect to stereotyped brains. Models subsequently optimized obtain highest fidelity. Nevertheless, an overall fidelity outcome complex, high-dimensional optimization problem (that choosing parameters for remains itself (as index) challenging define. Different people organizations are expected different tradeoffs based diverse criteria. Consequently, there multiple variants offer translation from original, biological WBE. If some deemed cognitively superior, but available only high cost, this could have undesired socioeconomic effects where those who wealthy afford higher-tier emulations. However, competition WBE providers attempting achieve lowest cost help drive costs down. A framework ethical standards pertaining recommend minimum standardized tests.

Язык: Английский

Процитировано

0
Explanation, understanding, and the methodological problem in consciousness science DOI
Andy Mckilliam

Synthese, Год журнала: 2025, Номер 205(4)

Опубликована: Март 28, 2025

Язык: Английский

Процитировано

0
Detecting Introspective Errors in Consciousness Science DOI Creative Commons
Andy Mckilliam

Ergo an Open Access Journal of Philosophy, Год журнала: 2025, Номер 12(0)

Опубликована: Апрель 7, 2025

Detecting introspective errors about consciousness presents challenges that are widely supposed to be difficult, if not impossible, overcome. This is a problem for science because many central questions turn on when and what extent we should trust subjects’ reports. has led some authors suggest abandon introspection as source of evidence constructing consciousness. Others have concluded in cannot answered via empirical investigation. I argue closer inspection, the associated with detecting can demonstrate how natural kind reasoning—the iterative application inference best explanation home leverage regularities nature—can allow us detect even difficult cases such judgments mental imagery, conclude worries intractable methodological misguided.

Язык: Английский

Процитировано

0