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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.
Marvin Minsky's "Society of Mind" model suggests that mind is built up from the interactions of simple parts called agents, which are themselves mindless. [27] Thomas R. Blakeslee described his model as "brain is composed of hundreds of independent centers of thought called 'modules'". [28]
The Haken-Kelso-Bunz (HKB) is a theoretical model of motor coordination originally formulated by Hermann Haken, J. A. Scott Kelso and H. Bunz. [1] The model attempts to provide the framework for understanding coordinated behavior in living things.
The model thus suggest that these two (and three depending on the situation) structures are in a perpetual battle to control the body. These interactions between the neocortex and the reptilian brain often seem competitive as the conscious thought generated by the neocortex can suppress the primitive thoughts generated by the reptilian complex.
The human brain's control of motor function is a mirror image in terms of connectivity; the left hemisphere controls the right hand and vice versa. This theoretically means that the hemisphere contralateral to the dominant hand tends to be more dominant than the ipsilateral hemisphere, however this is not always the case [ 2 ] and there are ...
A holographic model can also account for other features of memory that more traditional models cannot. The Hopfield memory model has an early memory saturation point before which memory retrieval drastically slows and becomes unreliable. [24] On the other hand, holographic memory models have much larger theoretical storage capacities.
Wilder Penfield, a neurosurgeon, was one of the first to map the cortical maps of the human brain. [3] When performing brain surgeries on conscious patients, Penfield would touch either a patient's sensory or motor brain map, located on the cerebral cortex, with an electric probe to determine if a patient could notice either a specific sensation or movement in a particular area on their body.
Ideomotor Apraxia, often IMA, is a neurological disorder characterized by the inability to correctly imitate hand gestures and voluntarily mime tool use, e.g. pretend to brush one's hair. The ability to spontaneously use tools, such as brushing one's hair in the morning without being instructed to do so, may remain intact, but is often lost.
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