![]() ![]() The major neural hypotheses propose synesthesia occurs due to neural hyper connectivity among sensory areas in the cortex, perhaps due to faulty axonal pruning, or differences in axon guidance. In fact, there is at least one study of synesthesia that suggests the condition may be inherited. This suggests there is some common genetic basis for most, if not all, synesthetic experiences. This account of synesthesia cannot by itself explain why siblings with synesthesia reared in similar environments report different colors for the same inducer, or experience different variants of synesthesia.įamily studies show various forms can exist within one family, with phenotypes differing even among close relatives. One theory suggests children learn to associate numbers or letter with colors, possibly to aid memory. Individuals with acquired synesthesia report first experiencing synesthesia later in life after taking hallucinogenic drugs, or after a neurological condition such as epileptic seizures. People with developmental synesthesia typically report having the condition for as long as they can remember, and generally cannot provide an explanation or an account of how they may have learned how to associate the experiences. The most common forms of synesthesia involve written words, letters, digits, and/or auditory stimuli. the sound of a bell triggers seeing the color blue). ![]() Synesthesia is a condition in which stimulation of one sense automatically evokes a perception in an unstimulated sense (e.g. ![]()
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