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Interdisciplinary study that attempts to explain the cognitive processes of humans and some higher animals in terms of the manipulation of symbols using computational rules. The field draws particularly on the disciplines of artificial intelligence, psychology (see cognitive psychology), linguistics, neuroscience, and philosophy. Some chief areas of research in cognitive science have been vision, thinking and reasoning, memory, attention, learning, and language processing. Early theories of cognitive function attempted to explain the evident compositionality of human thought (thoughts are built up of smaller units put together in a certain way), as well as its productivity (the process of putting together a thought from smaller units can be repeated indefinitely to produce an infinite number of new thoughts), by assuming the existence of discrete mental representations that can be put together or taken apart according to rules that are sensitive to the representations' syntactic, or structural, properties. This language of thought hypothesis was later challenged by an approach, variously referred to as connectionism, parallel-distributed processing, or neural-network modeling, according to which cognitive processes (such as pattern recognition) consist of adjustments in the activation strengths of neuronlike processing units arranged in a network.
Power or process of recalling or reproducing what has been learned or experienced. Research indicates that the ability to retain information is fairly uniform among normal individuals; what differs is the degree to which persons learn or take account of something to begin with and the kind and amount of detail that is retained. Attention, motivation, and especially association facilitate this process. Visual images are generally better remembered than are other forms of sense-data. Memory prodigies, or people with photographic or eidetic memories, often draw heavily on visual associations, including mnemonics. Many psychologists distinguish between short- and long-term memory. The former (variously said to last 10 seconds to 3 minutes) is less subject to interference and distortion than the latter. Long-term memory is sometimes divided into episodic (i.e., event-centred) and semantic (i.e., knowledge-centred) memory. Various models of memory have been proposed, from the Enlightenment notion of impressions made on brain tissues (restyled as memory molecules or coded engrams in the 20th century) to B.F. Skinner's black box to more recent ideas concerning information processing or the formation of neuronal groups. Disorders of or involving memory include Alzheimer disease, amnesia, Korsakoff syndrome, post-traumatic stress disorder, and senile dementia. See also hypnosis.
© 2010 Encyclopædia Britannica, Inc.
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Originally Posted by Andrew Atkin
The problem with consciousness is that it can never be understood. You can identify neurological correlates to experience, but you can never see how a neurological process can generate a conscious reaction in itself. Because conscious cannot be understood in material terms - even if it does in fact exist as a consequence of material processes. It may, ultimately, only be that the brain is a book that the "spirit" reads. Who knows.
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