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Gaze fixation and the neural circuitry of face processing in autism
Variation in eye fixation within autistic individuals was strongly and positively associated with amygdala activation across both studies, suggesting a heightened emotional response associated with gaze fixation in autism.
Diffusion tensor imaging of the brain
Amygdala and Ventromedial Prefrontal Cortex Are Inversely Coupled during Regulation of Negative Affect and Predict the Diurnal Pattern of Cortisol Secretion among Older Adults
- H. Urry, Carien M. van Reekum, R. Davidson
- Psychology, BiologyThe Journal of Neuroscience
- 19 April 2006
Individual differences yielded the predicted link between brain function while reducing negative affect in the laboratory and diurnal regulation of endocrine activity in the home environment.
Diffusion tensor imaging of the corpus callosum in Autism
White matter tractography using diffusion tensor deflection
Simulations show that the deflection term is less sensitive than the major eigenvector to image noise and is promising for mapping the organizational patterns of white matter in the human brain as well as mapping the relationship between major fiber trajectories and the location and extent of brain lesions.
Analysis of partial volume effects in diffusion‐tensor MRI
- A. Alexander, K. Hasan, M. Lazar, J. Tsuruda, D. Parker
- Materials ScienceMagnetic resonance in medicine
- 1 May 2001
A partial volume model of MRI signal behavior for two diffusion‐tensor compartments is presented andSimulations using this model demonstrate that the conventional single diffusion tensor model could lead to highly variable and inaccurate measurements of diffusion behavior.
Diffusion tensor imaging of cerebral white matter: a pictorial review of physics, fiber tract anatomy, and tumor imaging patterns.
- B. Jellison, A. Field, J. Medow, M. Lazar, M. Salamat, A. Alexander
- MedicineAJNR. American journal of neuroradiology
- 1 March 2004
We review the normal anatomy of the white matter (WM) tracts as they appear on directional diffusion tensor imaging (DTI) color maps, which will almost certainly be available to the general…
Diffusion Tensor Imaging in Autism Spectrum Disorder: A Review
- B. Travers, N. Adluru, A. Alexander
- PsychologyAutism research : official journal of the…
- 1 October 2012
From the 48 studies reviewed, persons with ASD tended to have decreased fractional anisotropy and increased mean diffusivity in white matter tracts spanning many regions of the brain but most consistently in regions such as the corpus callosum, cingulum, and aspects of the temporal lobe.
Longitudinal changes in patients with traumatic brain injury assessed with diffusion-tensor and volumetric imaging