18 found
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  1. The Timing of Conscious Experience: A Critical Review and Reinterpretation of Libet's Research.Gilberto Gomes - 1998 - Consciousness and Cognition 7 (4):559-595.
    An extended examination of Libet's works led to a comprehensive reinterpretation of his results. According to this reinterpretation, the Minimum Train Duration of electrical brain stimulation should be considered as the time needed to create a brain stimulus efficient for producing conscious sensation and not as a basis for inferring the latency for conscious sensation of peripheral origin. Latency for conscious sensation with brain stimulation may occurafterthe Minimum Train Duration. Backward masking with cortical stimuli suggests a 125-300 ms minimum value (...)
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  2. Volition and the Readiness Potential.Gilberto Gomes - 1999 - Journal of Consciousness Studies 6 (8-9):59-76.
    1. Introduction The readiness potential was found to precede voluntary acts by about half a second or more (Kornhuber & Deecke, 1965). Kornhuber (1984) discussed the readiness potential in terms of volition, arguing that it is not the manifestation of an attentional processes. Libet discussed it in relation to consciousness and to free will (Libet et al. 1983a; 1983b; Libet, 1985, 1992, 1993). Libet asked the following questions. Are voluntary acts initiated by a conscious decision to act? Are the physiological (...)
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  3.  64
    Pensamento e linguagem nas afirmações condicionais.Gilberto Gomes - 2013 - D.E.L.T.A 1 (29):121-134.
    Conditional assertions are a peculiar language structure that manifests a specific cognitive operation. In order to express it, different languages have found different ways of using verb forms. Primary conditionals are here defined as those that presuppose the possibility of the falsity of both the antecedent and the consequent. In them, the truth of the antecedent appears as a sufficient condition for the truth of the consequent. The truth condition of primary conditionals is defined as the impossibility of the conjunction (...)
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  4. Are Necessary and Sufficient Conditions Converse Relations?Gilberto Gomes - 2009 - Australasian Journal of Philosophy 87 (3):375 – 387.
    Claims that necessary and sufficient conditions are not converse relations are discussed, as well as the related claim that If A, then B is not equivalent to A only if B . The analysis of alleged counterexamples has shown, among other things, how necessary and sufficient conditions should be understood, especially in the case of causal conditions, and the importance of distinguishing sufficient-cause conditionals from necessary-cause conditionals. It is concluded that necessary and sufficient conditions, adequately interpreted, are converse relations in (...)
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  5. Problems in the Timing of Conscious Experience.Gilberto Gomes - 2002 - Consciousness and Cognition 11 (2):191-97.
    Libet's (2000) arguments in defense of his interpretation of his experimental results are insufficient. The claims of my critical review (Gomes, 2008) do not suffer with his new statements.
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  6. The Interpretation of Libet's Results on the Timing of Conscious Events: A Commentary.Gilberto Gomes - 2002 - Consciousness and Cognition 11 (2):221-230.
    A commentary on articles by Klein, Pockett, and Trevena and Miller, in this issue, is given. Average shift in the point of subjective equality , calculated by Klein on Libet's data, and corresponding change in mean shift, calculated by Libet et al. , may be “corrected,” taking as a reference point the end of the minimum train duration. Values obtained, if significant, indicate a latency for conscious sensation of the skin stimulus of at least 230 ms. Pockett's main conclusions are (...)
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  7.  49
    Free Will, the Self and the Brain.Gilberto Gomes - 2007 - Behavioral Sciences and the Law 2 (25):221-234.
    The free will problem is defined and three solutions are discussed: no-freedom theory, libertarianism, and compatibilism. Strict determinism is often assumed in arguing for libertarianism or no-freedom theory. It assumes that the history of the universe is fixed, but modern physics admits a certain degree of randomness in the determination of events. However, this is not enough for a compatibilist position—which is favored here—since freedom is not randomness. It is the I that chooses what to do. It is argued that (...)
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  8.  24
    Que tipo de determinação é compatível com que tipo de liberdade? – Uma resposta a Marcelo Fischborn.Gilberto Gomes - 2019 - Filosofia Unisinos 2 (20):113-127.
    While agreeing with Fischborn’s (2018) contention that, according to one traditional definition of compatibilism, my position should be classified as that of a libertarian incompatibilist, I argue here for a different view of compatibilism. This view involves, on the one hand, local probabilistic causation of decisions (rather than universal strict determinism) and, on the other, free will conceived as involving decisions generated by a decision-making process carried out by the brain, which consciously contemplates different alternatives and could in principle have (...)
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  9. What Should We Retain From a Plain Person's Concept of Free Will?Gilberto Gomes - 2005 - Journal of Consciousness Studies 12 (1):40-43.
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  10. Three Types of Conditionals and Their Verb Forms in English and Portuguese.Gilberto Gomes - 2008 - Cognitive Linguistics 19 (2):219-240.
    An examination of conditionals in di¤erent languages leads to a distinction of three types of conditionals instead of the usual two (indicative and subjunctive). The three types can be explained by the degree of acceptance or as-if acceptance of the truth of the antecedent. The labels subjunctive and indicative are shown to be inadequate. So-called indicative conditionals comprise two classes, the very frequent uncertain-fact conditionals and the quite rare accepted-fact conditionals. Uncertain-fact conditionals may have a time shift in contemporary English (...)
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  11. If A, Then B Too, but Only If C: A Reply to Varzi.Gilberto Gomes - 2006 - Analysis 66 (2):157–161.
    Varzi (2005) discussed 6 ways of symbolizing the sentence 'If Alf went to the movies then Beth went too, but only if she found a taxi-cab.' In the present reply, a seventh symbolization is offered, along with an analysis of the six alternatives discussed by Varzi.
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  12. Self‐Awareness and the Mind‐Brain Problem.Gilberto Gomes - 1995 - Philosophical Psychology 8 (2):155-65.
    The prima facie heterogeneity between psychical and physical phenomena seems to be a serious objection to psychoneural identity thesis, according to many authors, from Leibniz to Popper. It is argued that this objection can be superseded by a different conception of consciousness. Consciousness, while being conscious of something, is always unconscious of itself . Consciousness of being conscious is not immediate, it involves another, second-order, conscious state. The appearance of mental states to second-order consciousness does not reveal their true nature. (...)
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  13. On Experimental and Philosophical Investigations of Mental Timing: A Response to Commentary.Gilberto Gomes - 2002 - Consciousness and Cognition 11 (2):304-307.
    Reinterpretations of Libet's results have received support from most commentaries. Libet's arguments against alternative hypotheses are contested. Latency depends on intensity. Integration of intensity and duration explains the Minimum Train Duration. Analogies of Libet's timing of intentions with control experiments indicate biases of opposite signs, according to intramodal or intermodal results. Rosenthal's view of nonconscious intentions becoming conscious after a delay is favored. Compatibilist free will is discussed.
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  14.  49
    A Interpretação condicional da possibilidade de agir diferentemente.Gilberto Gomes - 2005 - Ethic@ 12 (1-2):115-121.
    Freedom is often defined by the possibility of doing otherwise. The conditional interpretation of this possibility, advanced by Moore, maintains that to say that someone could have done otherwise is to say that someone would have done otherwise if she had decided to do so. This conception is adequate for the thesis that freedom is compatible with natural causality. The present article presents a defense of this interpretation against the argument with which Lehrer purports to have refuted it. As used (...)
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  15. Preparing to Move and Deciding Not to Move☆.Gilberto Gomes - 2010 - Consciousness and Cognition 19 (1):457-459.
    A commentary is given on Trevena and Miller . The comparability of their experimental task and of the potential they recorded with those used and recorded by Libet, Gleason, Wright, and Pearl is questioned. An interpretation is given for the similarity of event-related potentials recorded when subjects decided to move and when they decided not to move.
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  16. Is Consciousness Epiphenomenal? Comment on Susan Pockett.Gilberto Gomes - 2005 - Journal of Consciousness Studies 12 (12):77-79.
    In a provocative article published in the Journal of Consciousness Studies, Susan Pockett argues for the plausibility of considering consciousness as an epiphenomenon of neural activity. This means that consciousness, though caused by the brain, would not in its turn have any role in the causation of neural activity and, consequently, of behaviour. Critical for her argument is the distinction she makes between 'consciousness per se' and 'the neural processing that accompanies it' . In her discussion, though, the author begs (...)
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  17. Consciousness and its Contents: A Response to de Quincey.Gilberto Gomes - 2007 - Journal of Consciousness Studies 14 (3):107-112.
    'Consciousness' is used in different ways, but not all of these uses reflect clear concepts. In his target article Christian de Quincey (2006) notes that confusion about consciousness is widespread and sets out to distinguish two main meanings of the word. However, his treatment of the subject is confused and the proposed distinction misses the point. I argue that the effort to clarify the meaning of consciousness should proceed in a different direction. We should first find some empirical criterion that (...)
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  18.  93
    Contribution à la Théorie de la Conscience, Conçue comme Activite du Cerveau.Gilberto Gomes - 1998 - Dissertation, Université Paris 7
    This thesis explores the possibility of theoretically conceiving consciousness as an activity of the brain. Objections, based on the concept of qualia, to the identification of consciousness with a brain activity are refuted. Phenomenal consciousness is identified with access-consciousness. Consciousness is conceived as a higher order processing of informational states of the brain. The state of consciousness represents an integration of prior nonconscious states. Libet’s research on the timing of conscious experience is reviewed and analyzed. His hypothesis of backward referral (...)
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