Theories of consciousness

Nature reviews. Neuroscience, Journal Year: 2022, Volume and Issue: 23(7), P. 439 - 452

Published: May 3, 2022

Language: Английский

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The Border Between Seeing and Thinking

Oxford University Press eBooks, Journal Year: 2023, Volume and Issue: unknown

Published: Feb. 16, 2023

Abstract This book argues that there is a joint in nature between seeing and thinking, perception, cognition. Perception constitutively iconic, nonconceptual, nonpropositional, whereas cognition does not have these properties constitutively. The appeal to “intuitions,” as common philosophy, but empirical evidence, including experiments neuroscience psychology. affects i.e., perception cognitively penetrable, this impugn the nature. A key part of argument we perceive only low-level like colors, shapes, textures also high-level such faces causation. Along way, explains difference perceptual memory, differences format content, whether probabilistic despite our lack awareness properties. for categories are concepts, need be singular, attribution discrimination equally fundamental, basic features mind known “core cognition” third category chapter on consciousness leverages results argue against some most widely accepted theories consciousness. Although one about consciousness, much rest repurposes work isolate scientific basis perception.

Language: Английский

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An integrative, multiscale view on neural theories of consciousness

Neuron, Journal Year: 2024, Volume and Issue: 112(10), P. 1531 - 1552

Published: March 5, 2024

How is conscious experience related to material brain processes? A variety of theories aiming answer this age-old question have emerged from the recent surge in consciousness research, and some are now hotly debated. Although most researchers so far focused on development validation their preferred theory relative isolation, article, written by a group scientists representing different theories, takes an alternative approach. Noting that various often try explain aspects or mechanistic levels consciousness, we argue do not necessarily contradict each other. Instead, several them may converge fundamental neuronal mechanisms be partly compatible complementary, multiple can simultaneously contribute our understanding. Here, consider unifying, integration-oriented approaches been largely neglected, seeking combine valuable elements theories.

Language: Английский

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Consciousness and sleep

Neuron, Journal Year: 2024, Volume and Issue: 112(10), P. 1568 - 1594

Published: May 1, 2024

Language: Английский

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Human visual consciousness involves large scale cortical and subcortical networks independent of task report and eye movement activity

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Nov. 29, 2022

The full neural circuits of conscious perception remain unknown. Using a visual task, we directly recorded subcortical thalamic awareness potential (TAP). We also developed unique paradigm to classify perceived versus not stimuli using eye measurements remove confounding signals related reporting on experiences. fMRI, discovered three major brain networks driving independent report: first, increases in signal detection regions visual, fusiform cortex, and frontal fields; arousal/salience involving midbrain, thalamus, nucleus accumbens, anterior cingulate, insula; second, frontoparietal attention executive control the cerebellum; finally, decreases default mode network. These results were largely maintained after excluding movement-based fMRI changes. Our findings provide evidence that neurophysiology consciousness is complex even without overt report, multiple cortical overlapping space time.

Language: Английский

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An academic survey on theoretical foundations, common assumptions and the current state of consciousness science

Neuroscience of Consciousness, Journal Year: 2022, Volume and Issue: 2022(1)

Published: Jan. 1, 2022

Abstract We report the results of an academic survey into theoretical and methodological foundations, common assumptions, current state field consciousness research. The consisted 22 questions was distributed on two different occasions annual meeting Association Scientific Study Consciousness (2018 2019). examined responses from 166 researchers with backgrounds (e.g. philosophy, neuroscience, psychology, computer science) at various stages their careers junior/senior faculty graduate/undergraduate students). reveal that there remains considerable discussion debate between surveyed about definition way it should be studied. To highlight a few observations, majority respondents believe machines could have consciousness, is gradual phenomenon in animal kingdom, unconscious processing extensive, encompassing both low-level high-level cognitive functions. Further, we show which theories are currently considered most promising by how supposedly cluster together, dependent measures best to index presence or absence neural thought likely signatures consciousness. These findings provide us snapshot views may therefore help prioritize research approaches foster progress.

Language: Английский

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Towards a pluralistic neurobiological understanding of consciousness

Trends in Cognitive Sciences, Journal Year: 2023, Volume and Issue: 27(5), P. 420 - 432

Published: Feb. 25, 2023

Language: Английский

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Constructing Experience

Published: Jan. 30, 2025

This Element examines the influence of expectation and attention on conscious perception. It explores debate whether is necessary for perception by presenting empirical evidence from studies inattentional blindness, change attentional blink. While strongly suggests that perception, other research has shown can shape sometimes leading to illusory experiences where predicted stimuli are perceived despite their absence. phenomenon, termed 'expectation awareness', may not be all experiences. These findings explored within predictive processing framework, brain characterized as a prediction engine, continuously updating its internal models minimize errors. Integrating psychology, neuroscience, cognitive science, this provides model how construct perceptual reality. also discusses clinical theoretical implications future research.

Language: Английский

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A leaky evidence accumulation process for perceptual experience

Trends in Cognitive Sciences, Journal Year: 2022, Volume and Issue: 26(6), P. 451 - 461

Published: April 2, 2022

Language: Английский

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Sleep/wake changes in perturbational complexity in rats and mice

iScience, Journal Year: 2023, Volume and Issue: 26(3), P. 106186 - 106186

Published: Feb. 13, 2023

In humans, the level of consciousness is assessed by quantifying spatiotemporal complexity cortical responses using Perturbational Complexity Index (PCI) and related PCIst (st, state transitions). Here we validate in freely moving rats mice showing that it lower NREM sleep slow wave anesthesia than wake or REM sleep, as humans. We then show (1) low associated with occurrence an OFF period neuronal silence; (2) stimulation deep, but not superficial, layers leads to reliable changes across sleep/wake anesthesia; (3) consistent are independent which single area being stimulated recorded, except for recordings mouse prefrontal cortex. These experiments can reliably measure vigilance states unresponsive animals support hypothesis when disrupts causal interactions networks.

Language: Английский

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