Consciousness, Cognitive Theories of

Baars, Bernard J.

doi:10.1002/0470018860.s00297

Cited by 38 publications

(51 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The literature refers to such inhibition of interference as adaptive, directed, or active forgetting (M. C. Anderson & Hulbert, 2021;Tanaka et al, 2019;Costanzi et al, 2021), where this term is to be understood in the organizational and attentional sense of 'Forget about that for a moment' rather than as total erasure of a memory episode. This organizational conception of memory function fits with classical theories and computational models conceiving of cognitive consciousness as a global workspace (GW) of limited capacity (Baars, 1988(Baars, , 1997(Baars, , 2002Dehaene et al, 2003;Dehaene & Changeux, 2011; for a novel distributed neuronal version of the global workspace, or GNW, see Mashour et al, 2020). This workspace-where the WM functions of perceptual attention and mnemonic retrieval are theorized to play out (Lustig & Jantz, 2015)-can be pictured as a conscious cognitive meeting point where sensory input from the external environment and elicited mnemonic content from the internal (cortico-hippocampal) environment interact (for a theorization and computational model of memory as a dimension of environment, see Zilli & Hasselmo, 2008).…”

Section: Active Forgettingsupporting

confidence: 65%

To deliberate, remember; to anticipate, forget: Cognitive deliberation profiles underpinning active forgetting-dependent everyday-like memory performance in young and aged mice

Stevens

Abed

Sellami

et al. 2023

Preprint

View full text Add to dashboard Cite

Recalling a specific past episode that will enable us to decide which action is suited to a given present situation is a core element of everyday life. A wealth of research has demonstrated that such selective remembering is dependent upon a capacity to inhibit or provisionally 'forget' related yet inappropriate memory episodes which could orient behavior in unwilled directions. Everyday-like memory (EdM) refers to this type of common organizational mnemonic capacity, known to deteriorate significantly with age, putatively as a result of decline in the cognitive capacity for selective inhibition or 'active forgetting'. Moreover, this memory retrieval-concomitant active forgetting comes at the cost of genuine amnesic weakening of the inhibited episodes, a phenomenon referred to as retrieval-induced forgetting (RIF). In the present study, we introduce a novel characterization of our previously validated mouse model of EdM in terms of the existing active forgetting and RIF literature. We also introduce novel behavioral analyses of the deliberation processes elicited by EdM challenge and use detailed multi-factorial explorations to reveal how these processes are impacted by age, temporal retention demand, difficulty of EdM challenge, and anticipation of trial outcome. Our observations indicate that deliberation requires remembering while accurate anticipation - in which a critical age-related deficit is also observed - requires active forgetting. Our results represent a significant advance towards unifying our understanding of the neurocognitive processes underpinning everyday-like memory, RIF, mnemonic deliberation, anticipatory function, and how they all are impacted by the physiological ageing process. In parallel, we present preliminary results using a transgenic mouse model which point to a fundamental role for the endocannabinoid system (eCS) in active forgetting and EdM, thereby demonstrating that deeper investigation of previously characterized age-related decline of the eCS should be a pre-clinical priority with a view to developing treatments for age-related decline of EdM function.

show abstract

Section: Active Forgettingsupporting

confidence: 65%

To deliberate, remember; to anticipate, forget: Cognitive deliberation profiles underpinning active forgetting-dependent everyday-like memory performance in young and aged mice

Stevens

Abed

Sellami

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…For example, the Global Workspace Theory by Baars postulated the integration into a global workspace of the information processed in parallel by specialised sensory systems27. The lack of whole-brain structural and activity data restricted the discussions to a theoretical ground for decades.…”

Section: Summary and Discussionmentioning

confidence: 99%

Functional complexity emerging from anatomical constraints in the brain: the significance of network modularity and rich-clubs

Zamora-López

Chen

Deco

et al. 2016

Sci Rep

102

View full text Add to dashboard Cite

The large-scale structural ingredients of the brain and neural connectomes have been identified in recent years. These are, similar to the features found in many other real networks: the arrangement of brain regions into modules and the presence of highly connected regions (hubs) forming rich-clubs. Here, we examine how modules and hubs shape the collective dynamics on networks and we find that both ingredients lead to the emergence of complex dynamics. Comparing the connectomes of C. elegans, cats, macaques and humans to surrogate networks in which either modules or hubs are destroyed, we find that functional complexity always decreases in the perturbed networks. A comparison between simulated and empirically obtained resting-state functional connectivity indicates that the human brain, at rest, lies in a dynamical state that reflects the largest complexity its anatomical connectome can host. Last, we generalise the topology of neural connectomes into a new hierarchical network model that successfully combines modular organisation with rich-club forming hubs. This is achieved by centralising the cross-modular connections through a preferential attachment rule. Our network model hosts more complex dynamics than other hierarchical models widely used as benchmarks.

show abstract

“…The notion of dynamic cell assemblies first articulated by Hebb [102] has now been articulated in the context of modern neuroscientific discoveries. Baars proposed the concept of a 'global workspace', where information is integrated in a small group of "specialized processors" or "conductors" before being broadcast to the whole brain resulting in a hierarchical flow of information [103]. Dehaene and colleagues extended this model and proposed that effortful cognitive tasks require two main computational spaces: "a unique global workspace composed of distributed and heavily interconnected neurons with long-range axons, and a set of specialized and modular perceptual, motor, memory, evaluative, and attentional processors" [104].…”

Section: Pfc Network Global Brain Dynamics and Cognition: Open Questi...mentioning

confidence: 99%

The role of PFC networks in cognitive control and executive function

Menon

D’Esposito

2021

Neuropsychopharmacol.

336

137

View full text Add to dashboard Cite

Systems neuroscience approaches with a focus on large-scale brain organization and network analysis are advancing foundational knowledge of how cognitive control processes are implemented in the brain. Over the past decade, technological and computational innovations in the study of brain connectivity have led to advances in our understanding of how brain networks function, inspiring new conceptualizations of the role of prefrontal cortex (PFC) networks in the coordination of cognitive control. In this review, we describe six key PFC networks involved in cognitive control and elucidate key principles relevant for understanding how these networks implement cognitive control. Implementation of cognitive control in a constantly changing environment depends on the dynamic and flexible organization of PFC networks. In this context, we describe major empirical and theoretical models that have emerged in recent years and describe how their functional architecture and dynamic organization supports flexible cognitive control. We take an overarching view of advances made in the past few decades and consider fundamental issues regarding PFC network function, global brain dynamics, and cognition that still need to be resolved. We conclude by clarifying important future directions for research on cognitive control and their implications for advancing our understanding of PFC networks in brain disorders.

show abstract

Consciousness, Cognitive Theories of

Cited by 38 publications

References 15 publications

To deliberate, remember; to anticipate, forget: Cognitive deliberation profiles underpinning active forgetting-dependent everyday-like memory performance in young and aged mice

To deliberate, remember; to anticipate, forget: Cognitive deliberation profiles underpinning active forgetting-dependent everyday-like memory performance in young and aged mice

Functional complexity emerging from anatomical constraints in the brain: the significance of network modularity and rich-clubs

The role of PFC networks in cognitive control and executive function

Contact Info

Product

Resources

About