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Skeletal structure of dicephalic twins. B. C. Hirst & G. A. Piersol, Human monstrosities.Wellcome L0027955. (1893) Dicephalic parapagus (/ d aɪ ˈ s ɛ f ə l ɪ k /) is a rare form of partial twinning with two heads side by side on one torso. [1]
Neuroimaging is a medical technique that allows doctors and researchers to take pictures of the inner workings of the body or brain of a patient. It can show areas with heightened activity, areas with high or low blood flow, the structure of the patients brain/body, as well as certain abnormalities.
A 2-D model of cortical sensory homunculus. A cortical homunculus (from Latin homunculus 'little man, miniature human' [1] [2]) is a distorted representation of the human body, based on a neurological "map" of the areas and portions of the human brain dedicated to processing motor functions, and/or sensory functions, for different parts of the body.
One hypothesis is that craniopagus parasiticus starts with the development of two fetuses from a single zygote that fail to separate at the head region around the second week of gestation. [1] Another is that it occurs later in development, around the fourth week of gestation, at which time the two embryos fuse together near the anterior open ...
The human brain is the central organ of the nervous system, and with the spinal cord, comprises the central nervous system. It consists of the cerebrum, the brainstem and the cerebellum. The brain controls most of the activities of the body, processing, integrating, and coordinating the information it receives from the sensory nervous system ...
It also occurs in some cases after brain surgery, stroke, infection, tumor, aneurysm, migraine and specific degenerative brain conditions such as Alzheimer's disease, corticobasal degeneration [7] and Creutzfeldt–Jakob disease. [8] Other areas of the brain that are associated with alien hand syndrome are the frontal, occipital, and parietal ...
Because the thalamus is mainly responsible for relaying sensory messages from the body to the brain, it is possible that there is a lot of overlap between the twins' sensory reception and the actual response it creates within the brain. One study examines this by studying the thalamus when it is at a persistent vegetative state that is when the ...
The pictures were positioned so they would exclusively be seen in only one visual field of the brain: the winter house was positioned so it would only be seen in the patient's left visual field (LVF), which corresponds to the brain's right hemisphere, and the chicken's claw was placed so it would only be seen in the patient's right visual field ...