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  1. Leonardo Ferreira Almada, Alfredo Pereira Jr & Claudia Carrara-Augustenborg (2013). What Affective Neuroscience Means for Science of Consciousness. Mens Sana Monographs 11 (1):253.
    The field of affective neuroscience has emerged from the efforts of Jaak Panksepp in the 1990s and reinforced by the work of, among others, Joseph LeDoux in the 2000s. It is based on the ideas that affective processes are supported by brain structures that appeared earlier in the phylogenetic scale (as the periaqueductal gray area), they run in parallel with cognitive processes, and can influence behaviour independently of cognitive judgements. This kind of approach contrasts with the hegemonic concept of conscious (...)
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  2. Samuel Bellini-Leite & Alfredo Pereira (2013). Is Global Workspace a Cartesian Theater? How the Neuro-Astroglial Interaction Model Solves Conceptual Issues. Journal of Cognitive Science 14 (4):335-360.
    The Global Workspace Theory (GWT) proposed by Bernard Baars (1988) along with Daniel Dennett’s (1991) Multiple Drafts Model (MDM) of consciousness are renowned cognitive theories of consciousness bearing similarities and differences. Although Dennett displays sympathy for GWT, his own MDM does not seem to be fully compatible with it. This work discusses this compatibility, by asking if GWT suffers from Daniel Dennett’s criticism of what he calls a “Cartesian Theater”. We identified in Dennett 10 requirements for avoiding the Cartesian Theater. (...)
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  3. Alfredo Pereira Jr, Maria AliceOrnellas Pereira & FábioAugusto Furlan (2011). Recent Advances in Brain Physiology and Cognitive Processing. Mens Sana Monographs 9 (1):183.
    The discovery of participation of astrocytes as active elements in glutamatergic tripartite synapses (composed by functional units of two neurons and one astrocyte) has led to the construction of models of cognitive functioning in the human brain, focusing on associative learning, sensory integration, conscious processing and memory formation/retrieval. We have modelled human cognitive functions by means of an ensemble of functional units (tripartite synapses) connected by gap junctions that link distributed astrocytes, allowing the formation of intra- and intercellular calcium waves (...)
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  4. Alfredo Pereira (2008). Steven Horst, Beyond Reduction: Philosophy of Mind and Post-Reductionist Philosophy of Science, Philosophy of Mind Series. [REVIEW] Minds and Machines 18 (3):421-423.
  5. João de F. Teixeira & Alfredo Pereira Jr (2008). Brain and Behavioral Functions Supporting the Intentionality of Mental States. Abstracta 4 (2):123-147.
    This paper relates intentionality, a central feature of human consciousness, with brain functions controlling adaptive action. Mental intentionality, understood as the “aboutness” of mental states, includes two modalities: semantic intentionality, the attribution of meaning to mental states, and projective intentionality, the projection of conscious content into the world. We claim that both modalities are the evolutionary product of self-organized action, and discuss examples of animal behavior that illustrate some stages of this evolution. The adaptive advantages of self-organized action impacted on (...)
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  6. Chen Yu, Linda B. Smith & Alfredo F. Pereira (2008). Grounding Word Learning in Multimodal Sensorimotor Interaction. In B. C. Love, K. McRae & V. M. Sloutsky (eds.), Proceedings of the 30th Annual Conference of the Cognitive Science Society. Cognitive Science Society. 1017--1022.
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  7. Alfredo Pereira Jr (2007). Uma Reflexão a Respeito da Evolução Humana E a Natureza da Linguagem. Abstracta 3 (2):138-161.
    In this paper I discuss scientific and philosophical issues related to the interdisciplinary area of Neurolinguistics, focusing on the origin and nature of human language. What kind of evolutionary process leads to the emergence of language? I propose that this process began with the adoption of bipedalism, triggering the co-evolution of new brain structures and forms of social organization. This process created a context that favoured the emergence of articulated vocalization using a combinatorial linguistic system. The identification of sufficient conditions (...)
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  8. Alfredo Pereira Jr (2007). What The Cognitive Neurosciences Mean To Me. Mens Sana Monographs 5 (1):158.
    _Cognitive Neuroscience is an interdisciplinary area of research that combines measurement of brain activity (mostly by means of neuroimaging) with a simultaneous performance of cognitive tasks by human subjects. These investigations have been successful in the task of connecting the sciences of the brain (Neurosciences) and the sciences of the mind (Cognitive Sciences). Advances on this kind of research provide a map of localization of cognitive functions in the human brain. Do these results help us to understand how mind relates (...)
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  9. Alfredo Pereira (2007). Peter Gärdenfors, Conceptual Spaces: The Geometry of Thought. [REVIEW] Minds and Machines 17 (4):493-496.
  10. Alfredo Pereira Jr & Roberson Polli (2005). Trapped Ion Quantum Computing and the Principles of Logic. Manuscrito 28 (2).
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  11. Alfredo Pereira Jr (2003). Toward an Explanation of the Genesis of Ketamine-Induced Perceptual Distortions and Hallucinatory States. Brain and Mind 4 (3):307-326.
    The NMDA receptor (NMDAR) channel has been proposed to function as a coincidence-detection mechanism for afferent and reentrant signals, supporting conscious perception, learning, and memory formation. In this paper we discuss the genesis of distorted perceptual states induced by subanesthetic doses of ketamine, a well-known NMDA antagonist. NMDAR blockage has been suggested to perturb perceptual processing in sensory cortex, and also to decrease GABAergic inhibition in limbic areas (leading to an increase in dopamine excitability). We propose that perceptual distortions and (...)
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  12. Alfredo Pereira (2003). The Quantum Mind/Classical Brain Problem. Neuroquantology.
  13. Alfredo Pereira & Gene Johnson (2003). Toward an Explanation of the Genesis of Ketamine-Induced Perceptual Distortions and Hallucinatory States. Brain and Mind 4 (3):307-326.
    The NMDA receptor (NMDAR) channel has been proposed to function as a coincidence-detection mechanism for afferent and reentrant signals, supporting conscious perception, learning, and memory formation. In this paper we discuss the genesis of distorted perceptual states induced by subanesthetic doses of ketamine, a well-known NMDA antagonist. NMDAR blockage has been suggested to perturb perceptual processing in sensory cortex, and also to decrease GABAergic inhibition in limbic areas (leading to an increase in dopamine excitability). We propose that perceptual distortions and (...)
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  14. Alfredo Pereira (2001). Coexisting Spatio-Temporalsscales in Neuroscience. Minds and Machines 11 (4).
    In this study I propose an epistemological discussion of multiple spatio-temporal scales in neuroscience. Are such scales merely convenient levels of description of structure and function, or do they correspond to irreducible levels of brain organization? What criteria should we employ in order to reduce one level to another, or to identify levels that are not reducible to others? Should we think of these criteria as based on empirical and/or theoretical reasons? Beginning with an empirical criterion – the necessity of (...)
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