Attention-deficit hyperactivity disorder other imaging findings: Difference between revisions
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{{ADHD}} | {{ADHD}} | ||
==Overview== | ==Overview== | ||
According to an advanced high-precision [[imaging]] study by researchers at the United States [[National Institutes of Health]]'s [[National Institute of Mental Health]], an actual delay in physical development in some brain structures, with a median value of three years, was observed in the brains of 223 ADHD patients beginning in elementary school, during the period when cortical thickening during childhood begins to change to thinning following [[puberty]]. The delay was most prominent in the [[frontal cortex]] and [[temporal cortex]], which are believed responsible for the ability to control and focus thinking, attention and planning, suppress inappropriate actions and thoughts, remember things from moment to moment, and work for reward, all functions whose disturbance is associated with a diagnosis of ADHD; the region with the greatest average delay, the middle of the prefrontal cortex, lagged a full five years in development in the ADHD patients. In contrast, the [[motor cortex]] in the ADHD patients was seen to mature faster than normal, suggesting that both slower development of behavioral control and advanced motor development might both be required for the restlessness and fidgetiness that characterise an ADHD diagnosis. Aside from the delay, both groups showed a similar back-to-front development of brain maturation with different areas peaking in thickness at different times. This contrasts with the pattern of development seen in other disorders such as [[autism]], where the peak of cortical thickening occurs much earlier than normal.<ref>[http://www.nimh.nih.gov/science-news/2007/brain-matures-a-few-years-late-in-adhd-but-follows-normal-pattern.shtml Brain Matures a Few Years Late in ADHD, But Follows Normal Pattern] NIMH Press Release, November 12, 2007 </ref> | |||
==References== | |||
{{Reflist|2}} | |||
{{WH}} | {{WH}} | ||
Revision as of 16:30, 11 August 2016
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Haleigh Williams, B.S.
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Attention-deficit hyperactivity disorder Microchapters |
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Differentiating Attention-Deficit Hyperactivity Disorder from other Diseases |
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Diagnosis |
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Treatment |
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Case Studies |
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Template:Attention-deficit hyperactivity disorder On the Web |
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American Roentgen Ray Society Images of Attention-deficit hyperactivity disorder other imaging findings |
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Overview
According to an advanced high-precision imaging study by researchers at the United States National Institutes of Health's National Institute of Mental Health, an actual delay in physical development in some brain structures, with a median value of three years, was observed in the brains of 223 ADHD patients beginning in elementary school, during the period when cortical thickening during childhood begins to change to thinning following puberty. The delay was most prominent in the frontal cortex and temporal cortex, which are believed responsible for the ability to control and focus thinking, attention and planning, suppress inappropriate actions and thoughts, remember things from moment to moment, and work for reward, all functions whose disturbance is associated with a diagnosis of ADHD; the region with the greatest average delay, the middle of the prefrontal cortex, lagged a full five years in development in the ADHD patients. In contrast, the motor cortex in the ADHD patients was seen to mature faster than normal, suggesting that both slower development of behavioral control and advanced motor development might both be required for the restlessness and fidgetiness that characterise an ADHD diagnosis. Aside from the delay, both groups showed a similar back-to-front development of brain maturation with different areas peaking in thickness at different times. This contrasts with the pattern of development seen in other disorders such as autism, where the peak of cortical thickening occurs much earlier than normal.[1]
References
- ↑ Brain Matures a Few Years Late in ADHD, But Follows Normal Pattern NIMH Press Release, November 12, 2007