Pediatric Neurologists
Speech language therapists
Neuropsychiatrics
Neurodevelopment specialists
Both reflect different parts of the brain that are involved. For e.g., in an auditory processing disorder such as cortical deafness, lesions to the primary auditory cortex can render the patient unable to hear sounds or comprehend speech because the neuronal signals that are should be processed by the auditory cortex, are not being. This doesn't mean that they don't understand 'words' and their meanings. By contrast, in a language processing disorder like semantic dementia, patients lose meaning for words itself, with degeneration of the temporal pole. Eventually, semantic dementia patients do not understand what simple words like 'elephant' or 'screwdriver' mean. This reflects a degradation of the semantic system where the meaning of the word and conceptual knowledge is lost, as opposed to impairment in sound processing.
Both terms are used frequently to refer to developmental problems in children.
in Auditory processing disorders, children do exhibit difficulties in processing particular or specific aspect of auditory stimulus like, sequential order of two words or digits, separating noise from speech, auditory memory. These are behavioral measures and certain tests can identify these aspects. Katz and colleagues have given extensive information of this.
language processing issues are related to semantics and syntacs or pragmatic aspect of language . generally seen in LD and specific language impairment. In very young children it is often difficult to differentiate both and in some cases both issues can be present
My understanding, & it will be great to have this reviewed by the better trained here, is that auditory processing disorder [APD] is a difficulty distinguishing, keeping categorized, different sounds like "ba" da" especially in noisy backgrounds. Someone with APD may have an exquisite--overwhelming- sensitivity to sound. It is not a diminished hearing issue but rather one of sound detail, memory, separation, & classification of sounds & how to hold them uniquely, comfortably placed in the mind. in APD, there is not deafness but an audiologist is often the detective who picks it up. A speech pathologist is likely your lead in language processing disorder--LPD is, well imagine showing up in a country where you had never even heard the language. With LPD, a child, well anyone--might cling to general terms that cover a wide subject "That food" Instead of "a piece of apple" and detailed stories, or questions exhaust them, or leave them hopeless. Humor, idioms, are too hard to sort. It is the subtle nuances of language itself that is so frustrating--not the way sounds can be deceptive as in APD. They are different and--if NOT addressed in their own way imagine a child, for example, especially one already struggling perhaps with ADD and trying to make his or her way--the right help, the right way. Well, it unlocks whether a person sees them self in the world--is it a place of wonder? Is it a place of pain? It seems very hard to sort such issues out--and add to that some sensory processing issues that might trail along. Yet, in those who learn--HOW they learn- I would call it a gift except that implies it isn't a right. Having seen some denied a fair chance at just what is blocking them--if it were your brain, or your child's brain; it would be bitter indeed. Somehow, that's how it should be for anyone and everyone's child, and not just the lucky few.
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