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The phrase "mind's eye" refers to the human ability for visual perception, imagination, visualization, and memory, or, in other words, one's ability to "see" things with the mind. In psychology and the cognitive sciences, perception is the process of acquiring, interpreting, selecting, and organizing sensory information. ...
Imagination is accepted as the innate ability and process to invent partial or complete personal realms within the mind from elements derived from sense perceptions of the shared world. ...
Visualization can refer to: Graphic Visualization as in any technique for creating images, diagrams, or animations to communicate any message. ...
In psychology, memory is an organisms ability to store, retain, and subsequently recall information. ...
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. ...
For other uses, see Mind (disambiguation). ...
Physical basis
The biological foundation of the mind's eye is not fully understood. fMRI studies have shown that the lateral geniculate nucleus and the V1 area of the visual cortex are activated during mental imagery tasks.[1] Ratey writes: Functional Magnetic Resonance Imaging (or fMRI) describes the use of MRI to measure hemodynamic signals related to neural activity in the brain or spinal cord of humans or other animals. ...
Grays FIG. 719– Hind- and mid-brains; postero-lateral view. ...
Brodmann area 17 (primary visual cortex) is shown in red in this image which also shows area 18 (orange) and 19 (yellow) The visual cortex refers to the primary visual cortex (also known as striate cortex or V1) and extrastriate visual cortical areas such as V2, V3, V4, and V5. ...
The visual pathway is not a one-way street. Higher areas of the brain can also send visual input back to neurons in lower areas of the visual cortex... As humans, we have the ability to see with the mind's eye -to have a perceptual experience in the absence of visual input. For example, PET scans have shown that when subjects, seated in a room, imagine they are at their front door starting to walk either to the left or right, activation begins in the visual association cortex, the parietal cortex, and the prefrontal cortex - all higher cognitive processing centers of the brain.[2] The visual system is the part of the nervous system which allows organisms to see. ...
A sketch of the human brain by artist Priyan Weerappuli, imposed upon the profile of Michelangelos David. ...
Drawing by Santiago Ramón y Cajal of neurons in the pigeon cerebellum. ...
Brodmann area 17 (primary visual cortex) is shown in red in this image which also shows area 18 (orange) and 19 (yellow) The visual cortex refers to the primary visual cortex (also known as striate cortex or V1) and extrastriate visual cortical areas such as V2, V3, V4, and V5. ...
Positron emission tomography (PET) is a nuclear medicine medical imaging technique which produces a three dimensional image or map of functional processes in the body. ...
The visual cortex is the general term applied to both the primary visual cortex (also known as V1) and the visual association area (V2, V3, V4, V5). ...
The parietal lobe is a lobe in the brain. ...
The prefrontal cortex is the anterior part of the frontal lobes of the brain, lying in front of the motor and premotor areas. ...
Not all humans have this ability. With eyes closed, some humans report that they can visualize, or imagine, detailed scenery that is not just a memory. Others however, cannot. These humans report that while details of visual memories can be recalled (with eyes open), the images themselves cannot be brought up, even with eyes closed. Users of hallucinogenic drugs report seeing images with eyes closed, however the images are random and hard to control, and may interfere with normal consciousness. Hallucinogenic drugs or hallucinogens are drugs that can alter sensory perceptions, elicit alternate states of consciousness, or cause hallucinations. ...
Philosophy The use of the phrase mind's eye does not imply that there is a single or unitary place in the mind or brain where visual consciousness occurs. Various philosophers have criticized this view, Daniel Dennett being one of the best-known.[3] However, others, such as Johnjoe McFadden of the University of Surrey in the UK and the New Zealand-based neurobiologist Susan Pockett, have proposed that the brain's electromagnetic field is consciousness itself, thus causing the perception of a unitary location.[4][5] Daniel Clement Dennett (b. ...
Johnjoe McFadden was born in Donegal, Ireland but raised in the UK. He obtained his PhD at Imperial College London and went on to work on human genetic diseases and then infectious diseases, at the University of Surrey in Guildford, UK. For more than a decade, Professor McFadden has specialised...
The University of Surrey received its charter on September 9, 1966, and was at that time situated near Battersea Park in south-west London. ...
The electromagnetic field is a physical field that is produced by electrically charged objects and which affects the behaviour of charged objects in the vicinity of the field. ...
References - ^ Imagery of famous faces: effects of memory and attention revealed by fMRI, A. Ishai, J. V. Haxby and L. G. Ungerleider, NeuroImage 17 (2002), pp. 1729-1741.
- ^ A User's Guide to the Brain, John J. Ratey, ISBN 0-375-70107-9, at p. 107.
- ^ Consciousness Explained, Daniel C. Dennett, Boston: Little, Brown and Company, 1991. ISBN 0-316-18065-3.
- ^ Our Conscious Mind Could Be An Electromagnetic Field, UniSci.
- ^ Synchronous Firing and Its Influence on the Brain's Electromagnetic Field: Evidence for an Electromagnetic Field Theory of Consciousness, J. McFadden, Journal of Consciousness Studies 9 (2002), part 4, pp. 23–50.
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