This research forum pertains to the topic of subject selection in augmentative and alternative communication (AAC) research. The following two papers present opposing views on the use of nondisabled persons in AAC research. Specifically, Higginbotham (1995) offers an argument in favor of the use of nondisabled persons as subjects, while Bedrosian (1995) addresses current limitations in using th...

PURPOSE To report on data from the current survey about academic and clinical education in augmentative and alternative communication (AAC), as well as to compare these findings with earlier surveys in an attempt to identify any changes being made as programs in the United States implement the new certification standards of the American Speech-Language-Hearing Association in the area of speech-...

MPEG’s low-delay audio codecs AAC-LD and AACELD are capable of providing natural audio in perceptually high quality with an algorithmic system delay1 in the range from 20 to 46.9 mS. The AAC-ELD scheme, in particular, which is basically formed out of AAC-LD and SBR, produces high-quality wideband audio at bit rates between 24 kbps and 48 kbps maintaining a relatively low algorithmic delay of 31...

BACKGROUND We explored whether, the Pathobiological Determinants of Atherosclerosis in Youth (PDAY) coronary and abdominal risk scores measured at 18 to 30 years of age and changes in these scores would more strongly predict coronary artery calcium (CAC) and abdominal aortic calcium (AAC) assessed 25 years later, than scores measured 25 years later. METHODS AND RESULTS In the Coronary Artery ...

We have identified the yeast homologue of Neurospora crassa MOM72, the mitochondrial import receptor for the ADP/ATP carrier (AAC), by functional studies and by cDNA sequencing. Mitochondria of a yeast mutant in which the gene for MOM72 was disrupted were impaired in specific binding and import of AAC. Unexpectedly, we found a residual, yet significant import of AAC into mitochondria lacking MO...

BACKGROUND Communication supports, referred to as augmentative and alternative communication (AAC), are an integral part of medical speech-language pathology practice, yet many providers remain unfamiliar with assessment and intervention principles. For patients with complex communication impairments secondary to neurodegenerative disease, AAC services differ depending on whether their conditio...

Many individuals with autism cannot speak or cannot speak intelligibly. A variety of aided augmentative and alternative communication (AAC) approaches have been investigated. Most of the research on these approaches has been single-case research, with small numbers of participants. The purpose of this investigation was to meta-analyze the single case research on the use of aided AAC with indivi...

Augmentative and Alternative communication (AAC) refers to the domain of communicating methods or techniques that provide improved human-human or human-system interaction. AAC techniques enable users with certain communication disabilities to participate in everyday conversations with or without helpers. Eye gaze is a very significant area of human computer interaction (HCI). The gaze estimatio...

This paper describes the monumental shift in the nature of augmentative and alternative communication (AAC) access that has occurred over the past three decades. In its earliest days AAC technology was directed at enabling interpersonal face-to-face interactions mainly for persons with physical impairment. Contemporary AAC access attempts to mirror the access needs of a broader population. Acco...

As a first step to characterize the unknown functional properties of the human mitochondrial ADP/ATP carrier (AAC), we tried to express human type 1 AAC (hAAC1) in Saccharomyces cerevisiae. Expression of hAAC1 in yeast mitochondrial membrane was very low, although its transcript level was high. Its expression was improved greatly by replacement of its N-terminal region with the corresponding re...