Rare variants and handedness: spotlight on TUBB4B.

Twin studies suggest that additive genetic effects account for about a quarter of the variance in handedness. Recently, Schijven et al. used exome-wide sequencing to provide evidence for a role of rare protein-coding variants in handedness.

Cross-hemispheric communication: Insights on lateralized brain functions.

On the surface, the two hemispheres of vertebrate brains look almost perfectly symmetrical, but several motor, sensory, and cognitive systems show a deeply lateralized organization. Importantly, the two hemispheres are connected by various commissures, white matter tracts that cross the brain's midline and enable cross-hemispheric communication. Cross-hemispheric communication has been suggested to play an important role in the emergence of lateralized brain functions.

Handedness in post-traumatic stress disorder: A meta-analysis.

The main objective of this meta-analysis was to investigate handedness in post-traumatic stress disorder on a meta-analytical level. For this purpose, articles were identified via a search in PubMed, PsychInfo, PubPsych, ResearchGate, and Google Scholar. Studies reporting findings relating to handedness in PTSD patients and healthy controls were considered eligible.

Hemispheric asymmetries in the amygdala: A comparative primer.

The amygdala is a core structure in the neuronal network underlying emotion processing in the vertebrate brain. Its structure and function have been extensively studied in both neuroimaging studies in human volunteers and comparative studies in animal models. Across different studies and research questions regarding the amygdala, one often-encountered finding is that the left and the right amygdala are not equivalent in terms of function and structure.