Sentences with phrase «in brain volume»

Quite the contrary, he believes the startling decrease in our brain volume — both in absolute terms and relative to our stature — may be a sign that we are actually getting smarter.

For example, some twins who had undergone the operation and had apparently normal brains when screened using ultrasound showed differences in brain volume when screened using the more sensitive MRI technique.

The treated mice had improvements in brain volume and in their movements.

Such studies, like the present one, have focused on differences in brain volume or brain function in those people heavily engaged in meditation or spiritual practices compared to those who are not.

Only the aerobic exercisers had significant increases in brain volume in what are known as the white and gray matter regions of the brain, areas related to age - related decline in brain structure and cognition.

Scientists have also investigated changes in brain volume in initial versus sustained abstinence in one set of subjects.

Using a new MRI technique, researchers found that adults with mild cognitive impairment who exercised four times a week over a six - month period experienced an increase in brain volume in specific, or local, areas of the brain, but adults who participated in aerobic exercise experienced greater gains than those who just stretched.

In addition, the 25 percent of the participants who had mild cognitive impairment associated with Alzheimer's also experienced an increase in brain volume due to the higher amounts of exercise.

Alzheimer's disease is pathologically characterized as a reduction in brain volume, commonly referred to as shrinkage, as well as amyloid protein tangles that prevent efficient communication between neurons by altering chemical and electrical signaling.

There appear to be two distinct differences between those likely to be diagnosed autistic and control groups: 1) a rapid increase in brain surface area between six and 12 months; and 2) a rapid increase in brain volume between 12 and 24 months.

Recent studies suggest that the total loss in brain volume due to atrophy — a wasting away of tissue caused by cell degeneration — between our teen years and old age is 15 percent or more, which means that by the time we're in our seventies, our brains have shrunk to the size they were when we were between 2 and 3 years old.

«Measuring change in brain volume from MRI brain scans is a well - established technique.

The researchers noted a decrease in brain volume of six to 10 percent in those participants whose blood sugar was «high normal.»

Although such a small increase in brain volume doesn't sound impressive, it halved the risk of Alzheimer's over five years.

Smaller brain volume and brain shrinkage are linked to cognitive impairment, whereas an increase in brain volume improves memory and cognition.

Moreover, older adults with high aerobic fitness have higher hippocampal volumes and better spatial memory, providing additional protection from the age - related decline in brain volume.

There are precedents that parallel our apparently paradoxical finding.36, 37 In a β - amyloid immunization trial among those with probable Alzheimer disease, immunization led to significant clinical benefit, reduced β - amyloid load, and reduced brain volume.36 The investigators hypothesized that removal of β - amyloid and / or other protein constituents from brain tissue may have caused cerebral fluid shifts, resulting in brain volume reductions on magnetic resonance imaging.

Conceptual Model Testing Multiple Mediators of the Hypothesized Association Between Income - to - Needs Ratio and Variation in Brain Volume

However, it is unique in that it investigates multiple factors at the same time: post-treatment changes in both brain volume and brain activity.

«By the time our participants had reached teenagehood, differences in brain volume were present in the cortex, which is where much of our regulation of emotions and cognitive processes takes place,» says Booij, who is now also affiliated with Concordia's PERFORM Centre.

A similar decrease in brain volume was found with some anti-amyloid immunotherapy trials,» Turner adds.