12 found
  1. Subjective discriminability of invisibility: A framework for distinguishing perceptual and attentional failures of awareness.Ryota Kanai, Vincent Walsh & Chia-Huei Tseng - 2010 - Consciousness and Cognition 19 (4):1045-1057.
    Conscious visual perception can fail in many circumstances. However, little is known about the causes and processes leading to failures of visual awareness. In this study, we introduce a new signal detection measure termed subjective discriminability of invisibility that allows one to distinguish between subjective blindness due to reduction of sensory signals or to lack of attentional access to sensory signals. The SDI is computed based upon subjective confidence in reporting the absence of a target . Using this new measure, (...)
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  2. Relating inter-individual differences in metacognitive performance on different perceptual tasks.Chen Song, Ryota Kanai, Stephen M. Fleming, Rimona S. Weil, D. Samuel Schwarzkopf & Geraint Rees - 2011 - Consciousness and Cognition 20 (4):1787.
    Human behavior depends on the ability to effectively introspect about our performance. For simple perceptual decisions, this introspective or metacognitive ability varies substantially across individuals and is correlated with the structure of focal areas in prefrontal cortex. This raises the possibility that the ability to introspect about different perceptual decisions might be mediated by a common cognitive process. To test this hypothesis, we examined whether inter-individual differences in metacognitive ability were correlated across two different perceptual tasks where individuals made judgments (...)
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    Information Closure Theory of Consciousness.Acer Y. C. Chang, Martin Biehl, Yen Yu & Ryota Kanai - 2020 - Frontiers in Psychology 11:505035.
    Information processing in neural systems can be described and analysed at multiple spatiotemporal scales. Generally, information at lower levels is more fine-grained but can be coarse-grained at higher levels. However, only information processed at specific scales of coarse-graining appears to be available for conscious awareness. We do not have direct experience of information available at the scale of individual neurons, which is noisy and highly stochastic. Neither do we have experience of more macro-scale interactions, such as interpersonal communications. Neurophysiological evidence (...)
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  4.  14
    Perceiving the Present and a Systematization of Illusions.Mark A. Changizi, Andrew Hsieh, Romi Nijhawan, Ryota Kanai & Shinsuke Shimojo - 2008 - Cognitive Science 32 (3):459-503.
    Over the history of the study of visual perception there has been great success at discovering countless visual illusions. There has been less success in organizing the overwhelming variety of illusions into empirical generalizations (much less explaining them all via a unifying theory). Here, this article shows that it is possible to systematically organize more than 50 kinds of illusion into a 7 × 4 matrix of 28 classes. In particular, this article demonstrates that (1) smaller sizes, (2) slower speeds, (...)
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    Cross-modal prediction changes the timing of conscious access during the motion-induced blindness.Acer Y.-C. Chang, Ryota Kanai & Anil K. Seth - 2015 - Consciousness and Cognition 31 (C):139-147.
  6.  22
    What contributes to individual differences in brain structure?Jenny Gu & Ryota Kanai - 2014 - Frontiers in Human Neuroscience 8.
  7.  20
    Alteration of Political Belief by Non-invasive Brain Stimulation.Caroline Chawke & Ryota Kanai - 2015 - Frontiers in Human Neuroscience 9.
  8. Symbolic magnitude modulates perceptual strength in binocular rivalry.Chris L. E. Paffen, Sarah Plukaard & Ryota Kanai - 2011 - Cognition 119 (3):468-475.
  9. Inferences about consciousness using subjective reports of confidence.T. Sherman Maxine, B. Barrett Adam & Ryota Kanai - 2015 - In Morten Overgaard (ed.), Behavioral Methods in Consciousness Research. Oxford, United Kingdom: Oxford University Press.
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    Recognising the forest, but not the trees: An effect of colour on scene perception and recognition.Tanja C. W. Nijboer, Ryota Kanai, Edward H. F. de Haan & Maarten J. van der Smagt - 2008 - Consciousness and Cognition 17 (3):741-752.
    Colour has been shown to facilitate the recognition of scene images, but only when these images contain natural scenes, for which colour is ‘diagnostic’. Here we investigate whether colour can also facilitate memory for scene images, and whether this would hold for natural scenes in particular. In the first experiment participants first studied a set of colour and greyscale natural and man-made scene images. Next, the same images were presented, randomly mixed with a different set. Participants were asked to indicate (...)
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    Predicting human behaviour from brain structure.Geraint Rees & Ryota Kanai - 2012 - In Sarah Richmond, Geraint Rees & Sarah J. L. Edwards (eds.), I know what you're thinking: brain imaging and mental privacy. Oxford: Oxford University Press. pp. 59.
  12.  16
    Parietal theta burst TMS: Functional fractionation observed during bistable perception not evident in attention tasks.Georg Schauer, Ryota Kanai & Jan W. Brascamp - 2016 - Consciousness and Cognition 40 (C):105-115.