Sensory impairment and intellectual disability

SummarySensory (visual and hearing) impairment has significant detrimental impact on sociocognitive and language development. Despite this, it is very much underrecognised and underdiagnosed in people with intellectual disability. Raising awareness of sensory impairment among professionals and carers is extremely important for early management to prevent further social handicap in people with intellectual disability. This article reviews sensory impairment in intellectual disability and its association with autism-spectrum disorder and mental illness.

Download Full-text

Visual and Hearing Impairments and their Impact on the Mental Health of Adults with Intellectual Disability

Oxford Textbook of the Psychiatry of Intellectual Disability ◽

10.1093/med/9780198794585.003.0024 ◽

2020 ◽

pp. 247-264

Author(s):

Reza Kiani ◽

Sugato Bhaumik

Keyword(s):

Mental Health ◽

Intellectual Disability ◽

Hearing Impairment ◽

Mental Health Problems ◽

Management Strategies ◽

Signs And Symptoms ◽

Autism Spectrum ◽

Hearing Impairments ◽

Care Givers ◽

Raising Awareness

Visual and hearing impairments, congenital or acquired, are much more common in people with intellectual disability (ID) than the general population. These can be missed or diagnosed with delay if professionals rely just on the subjective reports by the families/care givers rather than objective screening and assessment. People with ID might be unable to complain about a visual or hearing impairment due to their communication difficulties. Therefore, diagnostic overshadowing might occur whereby these conditions might present with atypical signs and symptoms (e.g. loss of skills, isolation, and challenging behaviours) which could be attributed to dementia, depression, or other mental health problems. There has also been an overrepresentation of autistic-like features and autism spectrum disorder reported in people with visual and hearing impairment. Raising awareness of these comorbidities in people with ID will therefore facilitate early diagnosis and implementation of appropriate management strategies that can improve service provision for this vulnerable population.

Download Full-text

Development of Neural Structure and Function in Autism Spectrum Disorder: Potential Implications for Learning Language

American Journal of Speech-Language Pathology ◽

10.1044/2020_ajslp-19-00209 ◽

2020 ◽

Vol 29 (4) ◽

pp. 1783-1797

Author(s):

Kelly L. Coburn ◽

Diane L. Williams

Keyword(s):

Autism Spectrum Disorder ◽

Language Development ◽

Diffusion Tensor ◽

Autism Spectrum ◽

Language Intervention ◽

Spectrum Disorder ◽

Autistic Children ◽

Neural Structure ◽

Complex Information ◽

And Function

Purpose Neurodevelopmental processes that begin during gestation and continue throughout childhood typically support language development. Understanding these processes can help us to understand the disruptions to language that occur in neurodevelopmental conditions, such as autism spectrum disorder (ASD). Method For this tutorial, we conducted a focused literature review on typical postnatal brain development and structural and functional magnetic resonance imaging, diffusion tensor imaging, magnetoencephalography, and electroencephalography studies of the neurodevelopmental differences that occur in ASD. We then integrated this knowledge with the literature on evidence-based speech-language intervention practices for autistic children. Results In ASD, structural differences include altered patterns of cortical growth and myelination. Functional differences occur at all brain levels, from lateralization of cortical functions to the rhythmic activations of single neurons. Neuronal oscillations, in particular, could help explain disrupted language development by elucidating the timing differences that contribute to altered functional connectivity, complex information processing, and speech parsing. Findings related to implicit statistical learning, explicit task learning, multisensory integration, and reinforcement in ASD are also discussed. Conclusions Consideration of the neural differences in autistic children provides additional scientific support for current recommended language intervention practices. Recommendations consistent with these neurological findings include the use of short, simple utterances; repetition of syntactic structures using varied vocabulary; pause time; visual supports; and individualized sensory modifications.

Download Full-text