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184 results on '"Richard L. Gregory"'

1. Gregory's 1977 Paper

Author

Patrick Cavanagh, Tom Troscianko, John D. Mollon, and Richard L. Gregory

Subjects
Ophthalmology, Artificial Intelligence, Computer science, Experimental and Cognitive Psychology, Sensory Systems
Published
2009
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2. Visual Reaction Time and Size Constancy

Author

Silvia Savazzi, Richard L. Gregory, Irene Sperandio, and Carlo Alberto Marzi

Subjects
Adult, Male, medicine.medical_specialty, Visual perception, media_common.quotation_subject, Experimental and Cognitive Psychology, Stimulus (physiology), Audiology, Size constancy, Young Adult, chemistry.chemical_compound, Artificial Intelligence, Perception, Reaction Time, medicine, Humans, Size Perception, media_common, Analysis of Variance, Communication, business.industry, Distance Perception, Retinal, Sensory Systems, Reaction time, Ophthalmology, Subjective constancy, chemistry, Visual reaction time, Female, Analysis of variance, Psychology, business, Photic Stimulation
Abstract

We carried out six experiments to find out whether simple manual reaction time (RT) to flux-equated visual stimuli of different size is modulated by size constancy or by the retinal angle subtended by the stimuli. We found that RT decreased with the increase in perceived stimulus size rather than retinal angle and that this relationship depended on the use of familiar 3-D-like stimuli and on the availability of other size-constancy cues. Thus, a stereotyped speeded motor response, such as that employed in a simple RT paradigm, is modulated by size constancy, as is the case with perceptual judgments. The present results provide original evidence on the relationship between simple RT and perception.

Published
2009
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3. Special Issue: Pre-Emptive Perception

Author

Richard L Gregory and Ivan Bodis-Wollner

Subjects
Ophthalmology, Artificial Intelligence, Perception, media_common.quotation_subject, Experimental and Cognitive Psychology, Psychology, Sensory Systems, Cognitive psychology, media_common
Published
2008
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4. Molyneux's Answer II

Author

Richard L. Gregory and Nicholas J. Wade

Subjects
History, 17th Century, Ophthalmology, Pattern Recognition, Visual, Artificial Intelligence, Orientation, Psychophysics, Visual Acuity, Visual Perception, Humans, Experimental and Cognitive Psychology, Psychology, Vision, Ocular, Sensory Systems
Published
2006
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7. Curious Asymmetries. Part 2

Author

Richard L. Gregory

Subjects
Depth Perception, Visual perception, Physics, media_common.quotation_subject, Illusion, Brain, Experimental and Cognitive Psychology, Illusions, Sensory Systems, Physical Phenomena, Ophthalmology, Artificial Intelligence, Physical phenomena, Visual Perception, Humans, Depth perception, media_common, Cognitive psychology
Published
2004
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8. War with Scotland?

Author

Richard L. Gregory

Subjects
Ophthalmology, History, Artificial Intelligence, Library science, Experimental and Cognitive Psychology, Sensory Systems
Published
2003
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9. Delusions

Author

Richard L, Gregory

Subjects
Ophthalmology, Cognition, Rotation, Optical Illusions, Artificial Intelligence, Psychophysics, Visual Perception, Animals, Humans, Attention, Experimental and Cognitive Psychology, Delusions, Sensory Systems
Published
2003
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10. Public Perceptions

Author

Baingio Pinna, Lothar Spillmann, and Richard L Gregory

Subjects
Computer science, business.industry, media_common.quotation_subject, 05 social sciences, Illusion, Visual Physiology, Experimental and Cognitive Psychology, 050105 experimental psychology, Sensory Systems, Motion (physics), 03 medical and health sciences, Ophthalmology, 0302 clinical medicine, Artificial Intelligence, Pattern recognition (psychology), 0501 psychology and cognitive sciences, Computer vision, Artificial intelligence, business, 030217 neurology & neurosurgery, media_common
Published
2002
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11. Public Perception of Perception

Author

Richard L. Gregory

Subjects
media_common.quotation_subject, Academies and Institutes, Educational Technology, Experimental and Cognitive Psychology, Illusions, Sensory Systems, Ophthalmology, Artificial Intelligence, Perception, Psychophysics, Humans, Psychology, Cognitive psychology, media_common
Published
2001
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12. Ambiguity of ‘Ambiguity’

Author

Richard L. Gregory

Subjects
Physics, Optical Illusions, business.industry, media_common.quotation_subject, Experimental and Cognitive Psychology, Ambiguity, computer.software_genre, Sensory Systems, Semantics, Ophthalmology, Artificial Intelligence, Humans, Perception, Artificial intelligence, business, computer, Natural language processing, media_common
Published
2000
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14. Seeds of Creation and Disaster

Author

Richard L. Gregory

Subjects
Creativity, Ophthalmology, Ink Blot Tests, Artificial Intelligence, Visual Perception, Humans, Experimental and Cognitive Psychology, Sensory Systems
Published
1999
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16. Lucky Imaging II

Author

Richard L, Gregory

Subjects
Ophthalmoscopy, Ophthalmology, Artificial Intelligence, Astronomy, Photography, Humans, Experimental and Cognitive Psychology, Sensory Systems
Published
2008
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17. Past Tense—Future Imperfect

Author

Richard L. Gregory

Subjects
Astronomy, History, 19th Century, Experimental and Cognitive Psychology, History, 20th Century, History, 18th Century, United Kingdom, Sensory Systems, Linguistics, Past tense, History, 17th Century, Ophthalmology, History, 16th Century, Artificial Intelligence, Imperfect, Psychology
Published
1998
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20. Experiments for a Desert Island

Author

Richard L. Gregory

Subjects
Ophthalmology, Desert (philosophy), Oceanography, Artificial Intelligence, Computer science, Experimental and Cognitive Psychology, Sensory Systems
Published
1994
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21. Objects

Author

Richard L Gregory

Subjects
Ophthalmology, Artificial Intelligence, Experimental and Cognitive Psychology, Sensory Systems
Published
1994
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23. Perception--Now we are 40

Author

Richard L. Gregory

Subjects
Ophthalmology, Artificial Intelligence, Perception, media_common.quotation_subject, Experimental and Cognitive Psychology, Periodicals as Topic, Psychology, Sensory Systems, Cognitive psychology, media_common
Published
2011

24. Seeing in Time

Author

Richard L. Gregory

Subjects
Ophthalmology, Biological Clocks, Artificial Intelligence, Biological clock, Time Perception, Humans, Experimental and Cognitive Psychology, Time perception, Psychology, Sensory Systems, Cognitive psychology
Published
1993
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25. Gaining a Faculty: A Degree for Perception?

Author

Richard L Gregory and Ian Gordon

Subjects
media_common.quotation_subject, Experimental and Cognitive Psychology, Faculty, Sensory Systems, Degree (temperature), Ophthalmology, Artificial Intelligence, Perception, Humans, Psychology, Curriculum, Social psychology, Vision, Ocular, media_common
Published
1993
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26. Rocking the Role of Universities

Author

Richard L. Gregory and John Harris

Subjects
Ophthalmology, Medical education, Artificial Intelligence, Political science, MEDLINE, Experimental and Cognitive Psychology, Sensory Systems
Published
1993
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28. Unlocking the Doors of Perception

Author

Richard L. Gregory

Subjects
Physics, media_common.quotation_subject, 05 social sciences, Experimental and Cognitive Psychology, 050105 experimental psychology, Sensory Systems, Visual arts, Physical Phenomena, Philosophy, 03 medical and health sciences, Ophthalmology, 0302 clinical medicine, Artificial Intelligence, Perception, Humans, Doors, Attention, 0501 psychology and cognitive sciences, Psychology, 030217 neurology & neurosurgery, Language, media_common
Published
2001
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29. Looking through the Ames window

Author

Richard L. Gregory

Subjects
Rotation, Computer science, business.industry, Optical Illusions, Science, Window (computing), Experimental and Cognitive Psychology, Sensory Systems, Form Perception, Ophthalmology, Optics, Artificial Intelligence, Humans, business, Art
Published
2010

30. Is Science Good for the Soul?

Author

Richard L. Gregory

Subjects
Male, Science, media_common.quotation_subject, Philosophy, Culture, History, 19th Century, Experimental and Cognitive Psychology, Sensory Systems, History, 17th Century, Ophthalmology, Artificial Intelligence, Religion and Science, Humans, Female, Theology, Soul, media_common
Published
1992
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31. A Memo on Meno

Author

Richard L. Gregory

Subjects
business.industry, Computer science, media_common.quotation_subject, Experimental and Cognitive Psychology, Sensory Systems, World Wide Web, Ophthalmology, Knowledge, Text mining, Memory, Artificial Intelligence, Perception, Humans, Learning, business, media_common
Published
2000
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32. Minding the Dome

Author

Richard L. Gregory

Subjects
Ophthalmology, Dome (geology), Artificial Intelligence, Experimental and Cognitive Psychology, Sensory Systems, Geology, Seismology
Published
2000
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34. The triangle-bisection illusion

Author

Priscilla Heard, Richard L. Gregory, and Stuart Anstis

Subjects
Depth Perception, business.industry, Optical Illusions, Bisection, media_common.quotation_subject, Illusion, Experimental and Cognitive Psychology, Geometry, Texture (music), Equilateral triangle, Sensory Systems, Form Perception, Ophthalmology, Optics, Discrimination, Psychological, Artificial Intelligence, Humans, business, Inscribed figure, Mathematics, media_common
Abstract

In the triangle-bisection illusion, a dot is inscribed exactly halfway up the height of an equilateral triangle, but it looks apparently far more than halfway up. The illusion is found for second-order triangles defined by stereo depth and by equiluminous texture. It is strongest for equilateral triangles, and even stronger for concave triangles with curved sides. We propose that the observers are probably responding to the centre of area or centre of gravity of the triangle rather than to its half-height.

Published
2009

35. Perceptions of Hamlet

Author

Richard L. Gregory

Subjects
Symbolism, Literature, Modern, medicine.medical_specialty, media_common.quotation_subject, Individuality, Poison control, Experimental and Cognitive Psychology, Violence, Suicide prevention, Occupational safety and health, Artificial Intelligence, Perception, Injury prevention, medicine, Humans, Psychiatry, Hamlet (place), Problem Solving, media_common, Human factors and ergonomics, Sensory Systems, Ophthalmology, Psychology, Drama
Published
1991
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36. Michael Faraday–Putting Perception in its Place

Author

Richard L. Gregory

Subjects
Visual perception, Optical illusion, media_common.quotation_subject, Historical Article, Experimental and Cognitive Psychology, Biography, Sensory Systems, Visual arts, law.invention, Ophthalmology, Artificial Intelligence, law, Perception, Motion perception, Faraday cage, media_common
Published
1991
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37. Talking about Goethe

Author

Richard L. Gregory

Subjects
Ophthalmology, Artificial Intelligence, Humans, Perception, Experimental and Cognitive Psychology, Art, Color Perception, Sensory Systems
Published
1999
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38. Lucky Imaging I

Author

Richard L. Gregory

Subjects
Ophthalmology, Artificial Intelligence, Astronomy, Ophthalmoscopes, Photography, Visual Perception, Humans, Experimental and Cognitive Psychology, Lucky imaging, Data science, Sensory Systems, Geology
Published
2008

39. Bayes Window (5): analogue Bayes?

Author

Richard L, Gregory

Subjects
Artificial Intelligence, Computers, Analog, Brain, Humans, Bayes Theorem, Perception, Cybernetics
Published
2008

40. Walking heads--part 2

Author

Richard L, Gregory

Subjects
Optical Illusions, Distance Perception, Humans, Television, Walking
Published
2008

41. Walking heads--Part 1

Author

Richard L, Gregory

Subjects
Science, Humans, Television, Child
Published
2008

43. What is Caught in Neural Nets?

Author

Richard L. Gregory

Subjects
Visual perception, Nerve net, media_common.quotation_subject, Models, Neurological, Experimental and Cognitive Psychology, Developmental psychology, Connectionism, Artificial Intelligence, Perception, medicine, Animals, Humans, Computer Simulation, media_common, Cognitive science, Artificial neural network, Optical Illusions, Optical illusion, Information processing, Brain, Cognition, Sensory Systems, Ophthalmology, medicine.anatomical_structure, Visual Perception, Nerve Net, Psychology, Algorithms
Published
1990
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44. Appearance and Reality (1): A Number of Ideas

Author

Richard L. Gregory

Subjects
Cognitive science, Visual perception, Optical Illusions, Computer science, Optical illusion, Reality Testing, Experimental and Cognitive Psychology, Reality testing, Sensory Systems, Computer graphics, Philosophy, Ophthalmology, Artificial Intelligence, Computer Graphics, Psychophysics, Visual Perception, Humans
Published
1990
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45. At First Blush

Author

Richard L. Gregory

Subjects
Male, Social environment, Experimental and Cognitive Psychology, Social Environment, Sensory Systems, Arousal, Ophthalmology, Artificial Intelligence, Flushing, Humans, Female, Social Behavior, Psychology, Social psychology
Published
1990
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46. Helmholtz's principle

Author

Richard L. Gregory

Subjects
Physics, Depth Perception, Optical Illusions, Mathematical analysis, Experimental and Cognitive Psychology, Sommerfeld radiation condition, Models, Biological, Sensory Systems, Afterimage, Ophthalmology, symbols.namesake, Artificial Intelligence, Helmholtz free energy, symbols, Visual Perception, Humans, Vision, Ocular
Published
2007

47. Let's not forget memory

Author

Richard L. Gregory

Subjects
Ophthalmology, Artificial Intelligence, Memory, Optical Illusions, Visual Perception, Humans, Experimental and Cognitive Psychology, Psychology, Sensory Systems
Published
2007

48. The most expensive painting in the world

Author

Richard L. Gregory

Subjects
Painting, Engineering, Esthetics, business.industry, Experimental and Cognitive Psychology, Sensory Systems, Visual arts, Ophthalmology, Pattern Recognition, Visual, Artificial Intelligence, Humans, Paintings, business, Psychomotor Performance
Published
2007

49. Editorial essay: magic

Author

Richard L. Gregory

Subjects
Adult, Magic (illusion), Logic, media_common.quotation_subject, Science, Art history, Infant, Experimental and Cognitive Psychology, Art, Sensory Systems, Ophthalmology, Artificial Intelligence, Humans, Perception, Magic, media_common
Published
2007

50. Artful forgery

Author

Richard L Gregory

Subjects
Ophthalmology, Artificial Intelligence, Fraud, Humans, Experimental and Cognitive Psychology, Perception, Sensory Systems, Art
Published
2006

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