What is the function of the lateral geniculate nucleus?

The lateral geniculate nucleus (LGN) belongs to the category of sensory projection nuclei of the thalamus and plays an essential role in normal visual processing.

What happens if the lateral geniculate nucleus is damaged?

In humans and other primates, visual information is transmitted from the retina to a part of the brain called the lateral geniculate nucleus (LGN), before reaching the primary visual cortex (V1). If the V1 is damaged, conscious vision is lost in the area of the visual field that corresponds to the damage.

Which special sense is associated with the lateral geniculate nucleus of the thalamus?

The axons in the optic tract terminate in four nuclei within the brain (Figure 15.2): the lateral geniculate nucleus of the thalamus – for visual perception; the superior colliculus of the midbrain – for control of eye movements; the pretectum of the midbrain – for control of the pupillary light reflex; and.

What is the lateral geniculate nucleus made of?

The LGN consists of six eye-specific layers, four of which receive inputs from parvocellular retinal ganglion cells, and two of which receive magnocellular inputs. Each layer is organized into a precise retinotopic map.

Where does the lateral geniculate nucleus project to?

The lateral geniculate nucleus of the thalamus is a layered structure that receives segregated input from the two eyes and projects to the primary visual cortex (V1). Geniculate neurons have center-surround receptive fields that are similar to those of their retinal inputs.

Is the DLG part of the pregeniculate nucleus?

Ventral to the DLG is the pregeniculate nucleus (PrG) (formerly called the ventral lateral geniculate). Separating the DLG and PrG is a band of neurons called the intergeniculate leaf (IGL). The surface of the DLG is covered by the optic tract.

Where does the medial geniculate nucleus receive auditory information?

The LGN and the medial geniculate nucleus which deals with auditory information are both thalamic nuclei and so are present in both hemispheres . The LGN receives information directly from the ascending retinal ganglion cells via the optic tract and from the reticular activating system.

Which is the main division of the lateral geniculate body?

The dorsolateral geniculate nucleus is the main division of the lateral geniculate body. The majority of input to the dLGN comes from the retina. It is laminated and shows retinotopic organization.