ADHD: Brain structure

0
9K

 
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
Business
How Important is Branding for a Startup?
Branding is one of the most critical aspects of building a successful startup. When launching a...
By Dacey Rankins 2025-03-17 18:26:57 0 6K
Finance
10 countries with the largest gold reserves.
At the end of 2023, central banks around the world purchased 1037 tons of gold, the second...
By Dacey Rankins 2024-10-22 16:50:43 0 13K
Activism
The Power of Activism: Driving Change in Society
Activism is the practice of taking action to bring about social or political change. It...
By Dacey Rankins 2024-10-14 18:30:40 0 14K
Business
What Personal Experiences Have Shaped the CEO?
Personal Background and Experiences Often Influence a CEO's Leadership Style and Decision-Making...
By Dacey Rankins 2025-07-01 13:47:01 0 576
History
Platoon. (1986)
Chris Taylor, a neophyte recruit in Vietnam, finds himself caught in a battle of wills between...
By Leonard Pokrovski 2023-04-17 20:46:37 0 24K
image/svg+xml


BigMoney.VIP Powered by Hosting Pokrov