AT first glance it's easy to spot these brains are wildly different sizes.
So it might shock you to know that they are scans of children of the same age.
On closer inspection the bigger brain on the left also has fewer "structures" than the one on the right, which is smaller and has more "blurry structures".
The scan on the left shows an image of a "healthy three-year-old with an average head size".
While the one on the right is that of a three-year-old who has been subjected to extreme emotional trauma and neglect.
This child is suffering from "severe sensory-deprivation neglect", wrote Professor Bruce Perry, the chief of psychiatry at Texas Children's Hospital.
Neglect has negative impact on the brain
Dr Perry shared the images in a research paper, published last year, looking at how childhood neglect affects cognitive development later in life.
He wrote: "These images illustrate the negative impact of neglect on the developing brain.
"In the CT scan on the left is an image from a healthy three-year-old with an average head size.
"The image on the right is from a three-year-old child suffering from severe sensory-deprivation neglect.
"This child’s brain is significantly smaller than average and has enlarged ventricles and cortical atrophy."
Developmental delays and memory problems
Essentially what this means is the child will suffer developmental delays and problems with memory.
Cortical atrophy is something that is more commonly seen in older people suffering from Alzheimer's disease.
It is well known that physical abuse can damage a child's brain and lead to life-long complications, sometimes even death.
But the effects of emotional abuse are less often thought about, but no less detrimental to a child's health.
Dr Perry explained that children – and adults – who have suffered emotional neglect can find it particularly difficult to form healthy relationships.
They may end up with attachment issues, in which they become overly reliant or dependent on one person, or they may end up socially isolated later in life.
Post-traumatic stress
Several studies have found that kids who experience emotional distress from a young age have problems with emotions and memory.
A study from Stanford Children's Hospital in San Francisco found that children with post-traumatic stress disorders and high levels of the stress hormone cortisol were more likely to experience a decrease in the size of their hippocampus – the part of the brain responsible for processing memory and emotion.
Dr Victor Carrion, a child psychiatrist from the hospital, said: "Although everyday levels of stress are necessary to stimulate normal brain development, excess levels can be harmful.
"We're not talking about the stress of doing your homework or fighting with your dad.
"We're talking about traumatic stress. These kids feel like they're stuck in the middle of a street with a truck barrelling down at them."
Other studies have linked high levels of stress in childhood to high blood pressure, heart disease and obesity later in life.
Dr Perry concluded in his paper: "Healthy development of the neural systems which allow optimal social and emotional functioning depends upon attentive, nurturing care-giving in infancy and opportunities to form and maintain a diversity of relationships with other children and adults throughout childhood."
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