Semantic-associative
This type of auditory agnosia is caused by lesions to the left hemisphere of the brain, specifically the temporal lobes and Wernicke's area.
Linguistic (or verbal information or Wernicke's) agnosia indicates that the subject can't comprehend words, although they can understand words using sign language and words from reading books, and are themselves capable of speech (and even of deriving meaning from non-linguistic communication e.g. body language) the particular sounds associated to each word are meaningless. Discriminative
This type of auditory agnosia is caused by lesions to the right hemisphere of the brain.
Classical (or pure) auditory agnosia is an inability to process environmental sounds, such as animal noises, industrial noises, or the like. An airplane roaring overhead would not be understood to be related to the idea of "airplane"—indeed, the person would not even think to look up.[6]
Interpretive or receptive agnosia (amusia) is an inability to understand music. The term "amusia" covers a broad spectrum: from those with a mere deficit of rhythmic ability (mild dysrhythmia), to those with heavy all-encompassing amusia, including the recently coined