ADHD: Brain structure

0
8K

 
The left prefrontal cortex, shown here in blue, is often affected in ADHD.
In children with ADHD, there is a general reduction of volume in certain brain structures, with a proportionally greater decrease in the volume in the left-sided prefrontal cortex.The posterior parietal cortex also shows thinning in individuals with ADHD compared to controls. Other brain structures in the prefrontal-striatal-cerebellar and prefrontal-striatal-thalamic circuits have also been found to differ between people with and without ADHD.

The subcortical volumes of the accumbens, amygdala, caudate, hippocampus, and putamen appears smaller in individuals with ADHD compared with controls. Structural MRI studies have also revealed differences in white matter, with marked differences in inter-hemispheric asymmetry between ADHD and typically developing youths.

Function MRI (fMRI) studies have revealed a number of differences between ADHD and control brains. Mirroring what is known from structural findings, fMRI studies have showed evidence for a higher connectivity between subcortical and cortical regions, such as between the caudate and prefrontal cortex. The degree of hyperconnectivity between these regions correlated with the severity of inattention or hyperactivity. Hemispheric lateralization processes have also been postulated as being implicated in ADHD, but empiric results showed contrasting evidence on the topic.

Search
Categories
Read More
Table Tennis
Table Tennis: The Art, Science, and Thrill of Ping Pong
Table Tennis: The Art, Science, and Thrill of Ping Pong Table tennis, also known as ping pong,...
By Leonard Pokrovski 2024-07-10 08:30:47 0 16K
Equestrian
The Timeless Art and Sport of Equestrianism
  The Timeless Art and Sport of Equestrianism Equestrianism, often...
By Leonard Pokrovski 2024-06-20 04:09:39 0 13K
Спорт
Рокки. Rocky. (1976)
Филадельфия. Рокки Бальбоа — молодой боксёр, который живёт в захудалой квартирке и еле...
By Nikolai Pokryshkin 2023-04-15 11:56:09 0 21K
Nature and Science
Dream Horse (2021)
Dream Alliance is an unlikely race horse bred by small-town Welsh bartender Jan Vokes. With no...
By Leonard Pokrovski 2022-09-07 13:52:42 0 27K
Philanthropy
Understanding Philanthropy: The Art of Giving Back
Understanding Philanthropy: The Art of Giving Back In a world often marked by division and...
By Leonard Pokrovski 2024-06-11 23:14:47 0 11K
image/svg+xml


BigMoney.VIP Powered by Hosting Pokrov