What does the genu of corpus callosum do?
What does the genu of corpus callosum do?
The genu is the bend of the anterior corpus callosum and the forceps minor is a tract that projects fibres from the genu to connect the medial and lateral surfaces of the frontal lobes. The body forms the long central section and its fibres pass through the corona radiata to reach the surface of the hemispheres.
What are the diseases of corpus callosum?
Disorders of the corpus callosum
- prenatal infections or viruses, such as rubella.
- genetic abnormalities, such as Andermann or Aicardi syndromes.
- toxic metabolic conditions, such as fetal alcohol syndrome (heavy drinking or alcoholism during pregnancy)
What would happen to an individual who suffered damage to the occipital lobe of the brain?
Injury to the occipital lobes may lead to vision impairments such as blindness or blind spots; visual distortions and visual inattention. The occipital lobes are also associated with various behaviors and functions that include: visual recognition; visual attention; and spatial analysis.
What causes thinning of corpus callosum?
Secondary thinning of the corpus callosum can be caused by diffuse injury such as hypoxic-ischemic encephalopathy, human immunodeficiency virus (HIV) encephalopathy, hydrocephalus, dysmyelinating conditions and demyelinating conditions.
What makes the brain of a split-brain patient unique?
Since information cannot be directly shared between the two hemispheres, split-brain patients display unusual behaviours, particularly concerning speech and object recognition.
What is an isointense heterotopia?
Heterotopias tend to be isointense, with gray matter on all pulse sequences. Heterotopias are disorders of neuronal migration of the grey matter and are not recognizable on ultrasound scan, but are known to be associated with a number of structural abnormalities that can be recognized.
What is the pathophysiology of heterotopia?
The pathogenesis of heterotopia located in the cerebral white matter is believed to be a failure of neurons to migrate to the cortical plate. They may occur as single lesions adjacent to the ventricle or in the more superficial white matter.
What is subependymal heterotopia?
Subependymal or periventricular heterotopia (Fig. 22.3) consists of round or ovoid nodules of gray matter that reside in the wall of the lateral ventricles or that lie directly lateral to the ventricular wall.
What does a heterotopic lesion look like on CT scan?
On CT and MRI, the lesions appear as nodular (Fig. 8-22A, B) or linear ( Fig. 8-23) areas within the white matter, most typically in the subcortical or subependymal regions. Heterotopias tend to be isointense, with gray matter on all pulse sequences.
