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Aphasia, also known as dysphasia, [a] is an impairment in a person’s ability to comprehend or formulate language because of damage to specific brain regions. [2] The major causes are stroke and head trauma; prevalence is hard to determine, but aphasia due to stroke is estimated to be 0.1–0.4% in the Global North. [3]
In human development, muteness or mutism [1] is defined as an absence of speech, with or without an ability to hear the speech of others. [2] Mutism is typically understood as a person's inability to speak, and commonly observed by their family members, caregivers, teachers, doctors or speech and language pathologists.
Muteness is the complete inability to speak. Speech sound disorders involve difficulty in producing specific speech sounds (most often certain consonants, such as /s/ or /r/), and are subdivided into articulation disorders (also called phonetic disorders) and phonemic disorders. Articulation disorders are characterized by difficulty learning to ...
The alternative meaning of alogia is inability to speak because of dysfunction in the central nervous system, [10] [3] found in mental deficiency and dementia. [ 11 ] [ 3 ] In this sense, the word is synonymous with aphasia , [ 3 ] and in less severe form, it is sometimes called dyslogia.
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Text display of spoken words, presented on a television or a movie screen, that allows a deaf or hard-of-hearing viewer to follow the dialogue and the action of a program simultaneously. Central auditory processing disorder Inability to differentiate, recognize, or understand sounds; hearing and intelligence are normal. Chemosensory disorders
Deaf-mute is a term which was used historically to identify a person who was either deaf and used sign language or both deaf and could not speak.The term continues to be used to refer to deaf people who cannot speak an oral language or have some degree of speaking ability, but choose not to speak because of the negative or unwanted attention atypical voices sometimes attract.
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