Patient Information about Epilepsy & Seizures. Epilepsy, or seizure disorder, is a chronic neurological condition caused by abnormal brain cell activity. Epilepsy is characterized by recurrent seizuresâhaving one seizure does not necessarily mean that a person has epilepsy.
(1971) â¢ Discriminability was measured by an increase in sucking rate toa second speech sound after habituation to the first sound. â¢ Recovery from habituation was greater when the two stimuli were from different adult phonemiccategories than when they were from the same category. Eimas et al.1971) reported that infants, like adults, demonstrate categorical ppp p perception for speech sounds. To explain this they proposed that infants are equipped with innate, speech-specific, phoneticfeature detectors tuned to the range of phonetic contrasts used in the worldâs languages.
Although these feature detectors were found in the frog's retina, in humans the feature detectors are found, not in the retina, but in the visual cortex, where there is considerably more brain tissue available for constructing a perception.