Back to Search
Start Over
Relationship among interthalamic adhesion size, thalamic anatomy and neuropsychological functions in healthy volunteers
- Source :
- Brain Structure and Function. 222:2183-2192
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- The interthalamic adhesion (ITA) is an understudied neuroanatomical structure that forms a bridge of tissue connecting the thalamus of each hemisphere across the midline whose functional significance remains largely unknown. The likelihood of ITA absence has been reported in some studies to be increased in males, but findings have been inconsistent. We used magnetic resonance imaging to investigate the size and absence of the ITA and their relationship to thalamic volume, putative indices of white matter integrity (fractional anisotropy and mean diffusivity) within the anterior thalamic radiation and neuropsychological functions in 233 (129M/104F) healthy volunteers (age range = 8 to 68). To ensure high reliability in this study 2 operators independently rated the absence of the ITA and measured its size for all individuals. The ITA was absent in 4% of all individuals with no sex differences in its absence. Females had greater ITA size compared to males overall with both groups demonstrating nonlinear age-associated changes across the age range examined. ITA size among females correlated significantly with thalamus volume and lower mean diffusivity in the anterior thalamic radiation. Path modeling indicated that ITA size statistically mediated the relationship between age and attention among females. Our findings provide evidence for sex differences in ITA size across the lifespan, which are associated with the surrounding thalamic anatomy and neuropsychological functions.
- Subjects :
- Adult
Male
Histology
Adolescent
Thalamus
Article
050105 experimental psychology
White matter
Young Adult
03 medical and health sciences
0302 clinical medicine
Fractional anisotropy
medicine
Humans
0501 psychology and cognitive sciences
Child
Aged
Sex Characteristics
Interthalamic adhesion
medicine.diagnostic_test
General Neuroscience
05 social sciences
Age Factors
Neuropsychology
Reproducibility of Results
Magnetic resonance imaging
Anatomy
Middle Aged
Magnetic Resonance Imaging
White Matter
Healthy Volunteers
Diffusion Magnetic Resonance Imaging
Diffusion Tensor Imaging
medicine.anatomical_structure
Bridge (graph theory)
Female
Psychology
030217 neurology & neurosurgery
Diffusion MRI
Subjects
Details
- ISSN :
- 18632661 and 18632653
- Volume :
- 222
- Database :
- OpenAIRE
- Journal :
- Brain Structure and Function
- Accession number :
- edsair.doi.dedup.....32fd437a3cf14c7d82123ad74707e495