What does lateralization mean?
: localization of function or activity on one side of the body in preference to the other.
What is meant by hemispheric Lateralisation?
Hemispheric lateralization is the idea that both hemispheres are functionally different and that certain mental processes and behaviors are mainly controlled by one hemisphere rather than the other. There is evidence of some specialization of function mainly regarding differences in language ability.
What is meant by cerebral lateralization?
The term brain lateralization refers to the fact that the two halves of the human brain are not exactly alike. Each hemisphere has functional specializations: some function whose neural mechanisms are localized primarily in one half of the brain.
What is meant by lateralization and Contralateralization?
Definition: Property of the brain such that one side of the body is controlled by the opposite hemisphere of the brain: the left hemisphere controls the right side of the body, and the right hemisphere connects the left side of the body.
What age does brain 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 and why is it important?
Lateralization is the differing functions of the left and right hemispheres of the brain. Research over the years has shown that damage to one hemisphere or the other can produce different problems and knowing this can help predict behavior.
What are signs of lateralization?
Ictal pallor and cold shivers are dominant hemispheric lateralization signs. Postictal unilateral nose wiping refers to the ipsilateral hemispheric focus compared to the wiping hand. Ictal or postictal aphasia refers to seizure arising from dominant hemisphere.
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 …
Which is the best medical definition of lateralization?
Medical Definition of lateralization. : localization of function or activity (as of verbal processes in the brain) on one side of the body in preference to the other. Other Words from lateralization.
How does lateralization of the brain affect language development?
Data from children with early focal brain injury corroborate the view of initial bilateral involvement in language development.
Who was the first person to test lateralization?
Testing Lateralization. Remember that the some of the first research on the right and left brains was conducted by Gazzaniga and Sperry. Their experiments were based on the idea that the information that is presented to the left visual field crosses over and is processed by the right brain and vice versa.
Which is part of the ventral pathway activates lateralization?
E. Zaidel, in International Encyclopedia of the Social & Behavioral Sciences, 2001 Perception of objects and faces activates the same ventral pathway but there is greater right lateralization for faces than for objects. Perception of smell activates olfactory orbitofrontal cortex, especially on the right.