These can include raised heart beat rate and smaller
intracranial volumes in the brain.
Not exact matches
The study also showed that the genetic influences on intelligence are highly correlated with genetic influences on educational attainment, and also, albeit less strongly, with smoking cessation,
intracranial volume, head circumference
in infancy, autism spectrum disorder and height.
On average, males had larger absolute
volumes than females
in the
intracranial space (12 %; > 14,000 brains), total brain (11 %; 2,523 brains), cerebrum (10 %; 1,851 brains), grey matter (9 %; 7,934 brains), white matter (13 %; 7,515 brains), regions filled with cerebrospinal fluid (11.5 %; 4,484 brains), and cerebellum (9 %; 1,842 brains).
Scientists collaborating across 250 institutions
in 35 countries have identified variations of the genetic code that are associated with
intracranial volume, which is a reflection of the maximum brain
volume an individual achieves over a lifetime.
Building on this work, the team has now determined that there are seven areas
in our DNA where differences
in the genetic code are associated with
intracranial volume, which is the size of the skull cavity
in which the brain resides.
Surprisingly, after this correction, the total
intracranial volume was still about 4 % smaller
in men carrying the HD mutation than men without it.
They examined the
intracranial volume of people with and without the HD mutation enrolled
in the PREDICT - HD study.
In contrast, right, left, and total lateral ventricles were proportionally larger than controls, after adjustment for
intracranial volume.