When Does Lateralization Occur?

Activation of left perisylvian structures by speech has been found in infants as young as three months of age (Dehaene-Lambertz et al. 2006), whereas progressively more lateralized responses to speech have been reported to occur later during the first year of life (e.g., Arimitsu et al.

What is lateralization of the brain and why does it occur?

Lateralization of brain function is the view that functions are performed by distinct regions of the brain. For instance, it is believed that there are different areas of the brain that are responsible for controlling language, formulating memories, and making movements.

What causes lateralization?

We have suggested [3] that lateralization of detour behavior may arise from asymmetries of eye use—a phenomenon which has been widely documented in animals with laterally placed eyes and relatively small binocular overlap [15], [22], [24], and also in animals with larger binocular overlap when selective hemifield ...