Certain images are interpreted by the Visual system in more than one way. These visual patterns are thus called ambiguous images that are famous for inducing the phenomenon of multistable perception. Some often used synonymous terms are reversal images, puzzle images and perceptual rivalry. See also. Multistable perception Visual Perception Optical illusion Binocular rivalry Monocular rivalry Cognitive neuroscience < ...

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Philosophy of perception, Philosophy of perception - Introduction, Philosophy of perception - Categories of perception, Philosophy of perception - The Scientific Account of Perception, Philosophy of perception - Philosophical ideas about perception, Philosophy of perception - Cognitive Processing and Epiphenomenalism, Philosophy of perception - Perceptual Space

Read more here: » Philosophy of perception: Encyclopedia II - Philosophy of perception - Categories of perception

Our perception of the external world begins with the senses, which lead us to generate empirical concepts representing the world around us, within a mental framework relating new concepts to preexisting ones. Because perception leads to an individual's impression of the world, its study may be important for those interested in better understanding communication, self, id, ego — even reality. While René Descartes concluded that the question "Do I exist?" can only be answered in the affirmative (cogito ergo sum), Freudian psyc ...

See also:

Philosophy of perception, Philosophy of perception - Introduction, Philosophy of perception - Categories of perception, Philosophy of perception - The Scientific Account of Perception, Philosophy of perception - Philosophical ideas about perception, Philosophy of perception - Cognitive Processing and Epiphenomenalism, Philosophy of perception - Perceptual Space

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An optical illusion is a type of illusion characterized by visually perceived images that are deceptive or misleading [1]. Information gathered by the eye is interpreted by the brain to give the perception that something is present when it is not. There are physiological illusions, that occur naturally, and cognitive illusions, that can be demonstrated by specific visual tricks that show particular assumptions in the human perceptual system [2]. Optical illusion - Physiological illusions. Physiological i ...

Including:

• Optical illusion - Physiological illusions
• Optical illusion - Cognitive illusions

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Consciousness is a quality of the mind generally regarded to comprise such key features as subjectivity, self-awareness, sentience, sapience, and the ability to perceive the relationship between oneself and one's environment. It is a subject of much research in philosophy of mind, psychology, neurology, and cognitive science. Some philosophers divide consciousness into phenomenal consciousness, which is experience itself, and access consciousness, which is the processing of the things in experience (Block 2004). Others consider ...

Including:

• Consciousness - Etymology
• Consciousness - Consciousness and language
• Consciousness - Cognitive neuroscience approaches
• Consciousness - Philosophical approaches
• Consciousness - Phenomenal and access consciousness
• Consciousness - The description and location of phenomenal consciousness
• Consciousness - Access consciousness
• Consciousness - Physical approaches
• Consciousness - Spiritual approaches
• Consciousness - Functions of consciousness
• Consciousness - Tests of consciousness
• Consciousness - Turing Test
• Consciousness - Mirror test
• Consciousness - Cognitive Neuroscience
• Consciousness - Philosophy
• Consciousness - Physical Theories of Consciousness
• Consciousness - People
• Consciousness - Miscellaneous

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Visual perception is one of the senses, consisting of the ability to detect light and interpret (see) it as the perception known as sight or naked eye vision. Vision has a specific sensory system, the visual system. There is disagreement as to whether or not this constitutes one, two or even three distinct senses. Some people make a distinction between "black and white" vision and the perception of colour, and others point out that vision using rod cells uses different physical detectors on the retina from ...

Including:

• Visual perception - The visual system
• Visual perception - Sources of information
• Visual perception - Individual and group differences in visual perception
• Visual perception - Theoretical perspectives in the study of visual perception
• Visual perception - Unconscious inference
• Visual perception - Gestalt
• Visual perception - Ecological psychology
• Visual perception - Types of visual perception
• Visual perception - Disorders/Dysfuntions

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Binocular rivalry is a phenomenon of visual perception in which perception alternates between different images presented to each eye. When one image is presented to one eye and a very different image is presented to the other, instead of the two images being seen superimposed, one image is seen for a few moments, then the other, then the first, and so on, randomly for as long as one cares to look. For example if a set of vertical lines is presented to one eye, and a set of horizontal lines to the same region of the retina of the other ...

Including:

• Binocular rivalry - Types of binocular rivalry
• Binocular rivalry - Why binocular rivalry is interesting
• Binocular rivalry - History of binocular rivalry
• Binocular rivalry - Early theories of binocular rivalry
• Binocular rivalry - Empirical studies of binocular rivalry: B. B. Breese 1899 1909

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Perception is sometimes referred to as a cognitive process in which information processing is used to transfer information from the world into the brain and mind where it is further processed and related to other information. Some philosophers and psychologists propose that this processing gives rise to particular mental states (cognitivism) whilst others envisage a direct path back into the external world in the form of action (radical behaviourism). Many eminent behaviourists such as John B. Watson and B.F. Skinner have proposed tha ...

See also:

Philosophy of perception, Philosophy of perception - Introduction, Philosophy of perception - Categories of perception, Philosophy of perception - The Scientific Account of Perception, Philosophy of perception - Philosophical ideas about perception, Philosophy of perception - Cognitive Processing and Epiphenomenalism, Philosophy of perception - Perceptual Space

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The most common theory of perception is naïve realism in which people believe that what they perceive is things in themselves. Children develop this theory as a working hypothesis of how to deal with the world. Many people who have not studied biology carry this theory into adult life and regard their perception to be the world itself rather than a pattern that overlays the form of the world. Thomas Reid took this theory a step further, he realised that sensation was composed of a set of data transfers but declared that these were in some w ...

See also:

Philosophy of perception, Philosophy of perception - Introduction, Philosophy of perception - Categories of perception, Philosophy of perception - The Scientific Account of Perception, Philosophy of perception - Philosophical ideas about perception, Philosophy of perception - Cognitive Processing and Epiphenomenalism, Philosophy of perception - Perceptual Space

Read more here: » Philosophy of perception: Encyclopedia II - Philosophy of perception - Philosophical ideas about perception

The science of perception is concerned with how events are observed and interpreted. An event may be the occurrence of an object at some distance from an observer. According to the scientific account this object will reflect light from the sun in all directions. Some of this reflected light from a particular, unique point on the object will fall all over the corneas of the eyes and the combined cornea/lens system of the eyes will divert the light to two points, one on each retina. The pattern of points of light on each retina forms an image. ...

See also:

Philosophy of perception, Philosophy of perception - Introduction, Philosophy of perception - Categories of perception, Philosophy of perception - The Scientific Account of Perception, Philosophy of perception - Philosophical ideas about perception, Philosophy of perception - Cognitive Processing and Epiphenomenalism, Philosophy of perception - Perceptual Space

Read more here: » Philosophy of perception: Encyclopedia II - Philosophy of perception - The Scientific Account of Perception

Cognitive illusions are often better known. Instead of demonstrating a physiological base they interact with different levels of perceptual processing, in-built assumptions or 'knowledge' are misdirected. Cognitive illusions are commonly divided into ambiguous illusions, distorting illusions, paradox illusions, or fiction illusions. They often exploit the predictive hypotheses of early visual processin ...

See also:

Optical illusion, Optical illusion - Physiological illusions, Optical illusion - Cognitive illusions

Read more here: » Optical illusion: Encyclopedia II - Optical illusion - Cognitive illusions

Modern investigations into and discoveries about consciousness are based on psychological statistical studies and case studies of consciousness states and the deficits caused by lesions, stroke, injury, or surgery that disrupt the normal functioning of human senses and cognition. These discoveries suggest that the mind is a complex structure derived from various localized functions that are bound together with a unitary awareness. Several studies point to common mechanisms in different clinical conditions that lead to loss of consciou ...

See also:

Consciousness, Consciousness - Etymology, Consciousness - Consciousness and language, Consciousness - Cognitive neuroscience approaches, Consciousness - Philosophical approaches, Consciousness - Phenomenal and access consciousness, Consciousness - The description and location of phenomenal consciousness, Consciousness - Access consciousness, Consciousness - Physical approaches, Consciousness - Spiritual approaches, Consciousness - Functions of consciousness, Consciousness - Tests of consciousness, Consciousness - Turing Test, Consciousness - Mirror test, Consciousness - Cognitive Neuroscience, Consciousness - Philosophy, Consciousness - Physical Theories of Consciousness, Consciousness - People, Consciousness - Miscellaneous

Read more here: » Consciousness: Encyclopedia II - Consciousness - Cognitive neuroscience approaches

Spiritual approaches to consciousness involve the idea of altered states of consciousness or religious experience. Changes in the state of consciousness or a religious experience can occur spontaneously or as a result of religious observance. It is also maintained by some religions and religious factions that the universe itself is consciousness. In shamanic practices, changes in states of consciousness are induced by activities that create trance states, such as drumming, dancing, fasting, sensory deprivation, exposure to extremes of ...

See also:

Consciousness, Consciousness - Etymology, Consciousness - Consciousness and language, Consciousness - Cognitive neuroscience approaches, Consciousness - Philosophical approaches, Consciousness - Phenomenal and access consciousness, Consciousness - The description and location of phenomenal consciousness, Consciousness - Access consciousness, Consciousness - Physical approaches, Consciousness - Spiritual approaches, Consciousness - Functions of consciousness, Consciousness - Tests of consciousness, Consciousness - Turing Test, Consciousness - Mirror test, Consciousness - Cognitive Neuroscience, Consciousness - Philosophy, Consciousness - Physical Theories of Consciousness, Consciousness - People, Consciousness - Miscellaneous

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Even at the dawn of Newtonian science, Leibniz and many others were suggesting physical theories of consciousness. Modern physical theories of consciousness can be divided into three types: theories to explain behaviour and access consciousness, theories to explain phenomenal consciousness and theories to explain the quantum mechanical (QM) Quantum mind. Theories that seek to explain behaviour are an everyday part of neuroscience, some of these theories of access consciousness, such as Edelman's theory, contentiously identify phenomenal cons ...

See also:

Consciousness, Consciousness - Etymology, Consciousness - Consciousness and language, Consciousness - Cognitive neuroscience approaches, Consciousness - Philosophical approaches, Consciousness - Phenomenal and access consciousness, Consciousness - The description and location of phenomenal consciousness, Consciousness - Access consciousness, Consciousness - Physical approaches, Consciousness - Spiritual approaches, Consciousness - Functions of consciousness, Consciousness - Tests of consciousness, Consciousness - Turing Test, Consciousness - Mirror test, Consciousness - Cognitive Neuroscience, Consciousness - Philosophy, Consciousness - Physical Theories of Consciousness, Consciousness - People, Consciousness - Miscellaneous

Read more here: » Consciousness: Encyclopedia II - Consciousness - Physical approaches

As there is still not a clear definition of consciousness, no empirical tests currently exist to test consciousness as a whole. Some have even argued that empirical tests of consciousness are intrinsically impossible. However, some researchers have devised tests to detect what they feel are certain aspects of consciousness. A test similar to this was used in the novel Do Androids Dream of Electric Sheep by Philip K. Dick to see if a person was a robot or an actual human. In the Ridley Scott movie, Blade Runner, which was inspired by that book, it is known as th ...

See also:

Consciousness, Consciousness - Etymology, Consciousness - Consciousness and language, Consciousness - Cognitive neuroscience approaches, Consciousness - Philosophical approaches, Consciousness - Phenomenal and access consciousness, Consciousness - The description and location of phenomenal consciousness, Consciousness - Access consciousness, Consciousness - Physical approaches, Consciousness - Spiritual approaches, Consciousness - Functions of consciousness, Consciousness - Tests of consciousness, Consciousness - Turing Test, Consciousness - Mirror test, Consciousness - Cognitive Neuroscience, Consciousness - Philosophy, Consciousness - Physical Theories of Consciousness, Consciousness - People, Consciousness - Miscellaneous

Read more here: » Consciousness: Encyclopedia II - Consciousness - Tests of consciousness

Some philosophers suggest that consciousness resists or even defies definition. Others believe it can be usefully distinguished between phenomenal consciousness and access or psychological consciousness, while still others disagree. There are many philosophical stances on consciousness, including: behaviorism, dualism, idealism, functionalism, phenomenalism, physicalism, emergentism, and mysticism. C ...

See also:

Consciousness, Consciousness - Etymology, Consciousness - Consciousness and language, Consciousness - Cognitive neuroscience approaches, Consciousness - Philosophical approaches, Consciousness - Phenomenal and access consciousness, Consciousness - The description and location of phenomenal consciousness, Consciousness - Access consciousness, Consciousness - Physical approaches, Consciousness - Spiritual approaches, Consciousness - Functions of consciousness, Consciousness - Tests of consciousness, Consciousness - Turing Test, Consciousness - Mirror test, Consciousness - Cognitive Neuroscience, Consciousness - Philosophy, Consciousness - Physical Theories of Consciousness, Consciousness - People, Consciousness - Miscellaneous

Read more here: » Consciousness: Encyclopedia II - Consciousness - Philosophical approaches

Some philosophers suggest that consciousness resists or even defies definition. Others believe it can be usefully distinguished between phenomenal consciousness and access or psychological consciousness, while still others disagree. There are many philosophical stances on consciousness, including: behaviorism, dualism, idealism, functionalism, phenomenalism, physicalism, emergentism, and mysticism. John Locke's chapter XXVII "On Identity and Diversity" in An Essay Concerning Human Understanding (1689) has been sai ...

See also:

Consciousness, Consciousness - Etymology, Consciousness - Consciousness and language, Consciousness - Cognitive neuroscience approaches, Consciousness - Philosophical approaches, Consciousness - Phenomenal and access consciousness, Consciousness - The description and location of phenomenal consciousness, Consciousness - Access consciousness, Consciousness - Physical approaches, Consciousness - Spiritual approaches, Consciousness - Functions of consciousness, Consciousness - Tests of consciousness, Consciousness - Turing Test, Consciousness - Mirror test, Consciousness - Cognitive Neuroscience, Consciousness - Philosophy, Consciousness - Physical Theories of Consciousness, Consciousness - People, Consciousness - Miscellaneous

Read more here: » Consciousness: Encyclopedia II - Consciousness - Philosophical approaches

Visual perception - Unconscious inference. Hermann von Helmholtz is often credited with the founding of the scientific study of visual perception. Helmholtz held vision to be a form of unconscious inference: vision is a matter of deriving a probable interpretation for incomplete data. The general goal of vision is to identify, as accurately as possible, the features of our environment: roughly, what objects are present where. Other features are irrelevant to this task : illumination patterns, viewing ...

See also:

Visual perception, Visual perception - The visual system, Visual perception - Sources of information, Visual perception - Individual and group differences in visual perception, Visual perception - Theoretical perspectives in the study of visual perception, Visual perception - Unconscious inference, Visual perception - Gestalt, Visual perception - Ecological psychology, Visual perception - Types of visual perception, Visual perception - Disorders/Dysfuntions

Read more here: » Visual perception: Encyclopedia II - Visual perception - Theoretical perspectives in the study of visual perception

Real world examples of Sorites type effects can be found whenever there is a need to translate from a continuous or many-valued domain (such as the large number of grains of sand) into a system with only two states. The film The Englishman Who Went Up a Hill But Came Down a Mountain deals with a Sorites type situation in the classification of mountains as being over 1,000 feet. The hill in question was just under 1,000 feet and the local community took earth up the hill so that it would ...

See also:

Paradox of the heap, Paradox of the heap - Possible solutions, Paradox of the heap - Setting a fixed boundary, Paradox of the heap - Trivial Solutions, Paradox of the heap - Induction, Paradox of the heap - Multi-valued logic, Paradox of the heap - Probability, Paradox of the heap - Consensus and Vagueness, Paradox of the heap - Examples

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Most of the general processes of visual perception have been shown to be universal, as opposed to being dependant on culture, although there are specific instances where cultural variability appears to come into play. It has also been shown that certain individual differences such as impairment of sight and spatial skills can also affect our visual perception. There are also other factors that influence how we perceive things such as personality, cognitive styles, gender, occupation, ag ...

See also:

Visual perception, Visual perception - The visual system, Visual perception - Sources of information, Visual perception - Individual and group differences in visual perception, Visual perception - Theoretical perspectives in the study of visual perception, Visual perception - Unconscious inference, Visual perception - Gestalt, Visual perception - Ecological psychology, Visual perception - Types of visual perception, Visual perception - Disorders/Dysfuntions

Read more here: » Visual perception: Encyclopedia II - Visual perception - Individual and group differences in visual perception