There is suspicion that the impairment of speech perception may be due to CAPDs, but how about speech expression?
After numerous studies began enlightening the dark pages of the central auditory system, CAPD was first officially described in 1992 by the American Speech--Language--Hearing Association (Figure 1 and 2) (13).
Focusing on the central auditory system, several studies have also documented delays in auditory processing in ASDs, but there is an obscurity whether these are evidence of a CAPD specific to an ASD (44-46).
Given the potential for high rates of CAPD in those exposed to blasts, it is important to ask how many Veterans have been exposed to blasts and are thus at risk for CAPD.
To date, very few data sets exist that can be used to estimate the prevalence of CAPD in the OIF/OEF/OND Veteran population.
Abbreviations: AF = arcuate fasciculus, CANS = central auditory nervous system, CAPD = central auditory processing disorder, DTI = diffusion tensor imaging, fMRI = functional magnetic resonance imaging, OIF/OEF/OND = Operation Iraqi Freedom/Operation Enduring Freedom/Operation New Dawn, PTSD = posttraumatic stress disorder, RR&D = Rehabilitation Research and Development, STRF = spectrotemporal receptive field, TBI = traumatic brain injury, VA = Department of Veterans Affairs.