Inducing blindsight in normal observers
نویسندگان
چکیده
منابع مشابه
Differential BOLD activity associated with subjective and objective reports during "blindsight" in normal observers.
The study of conscious visual perception invariably necessitates some means of report. Report can be either subjective, i.e., an introspective evaluation of conscious experience, or objective, i.e., a forced-choice discrimination regarding different stimulus states. However, the link between report type and fMRI-BOLD signals has remained unknown. Here we used continuous flash suppression to ren...
متن کاملRelative blindsight in normal observers and the neural correlate of visual consciousness.
By using a paradigm based on metacontrast masking, we created experimental conditions in which the subjective report of consciousness differs but the objectively measured ability to discriminate visual targets does not. This approach allowed us to study the neural correlate of consciousness while having performance levels carefully matched in healthy human subjects. A comparison of the neural a...
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The phenomenon of blindsight — the manifestation by forced-choice guessing of visual processing despite the total loss of visual awareness caused by damage to striate cortex (V1) [1] — has influenced many current theories of visual awareness [2,3]. We have investigated whether hemianopic subject GY is able consciously to experience colour in his blind field by using a TMS-chromatic adaptation p...
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Blindsight is the rare and paradoxical ability of some human subjects with occipital lobe brain damage to discriminate unseen stimuli in their clinically blind field defects when forced-choice procedures are used, implying that lesions of striate cortex produce a sharp dissociation between visual performance and visual awareness. Skeptics have argued that this is no different from the behavior ...
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important for screening purposes, but have to be combined with detailed biochemical and functional studies. In fact, the experience with yeast showed that the many possibilities offered by genomics and proteomics shifted the emphasis from cloning back to biochemistry and thus gave us more time for functional studies. What is the biggest hindrance to science? Administrators who like paragraphs m...
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ژورنال
عنوان ژورنال: Psychonomic Bulletin & Review
سال: 2003
ISSN: 1069-9384,1531-5320
DOI: 10.3758/bf03196486