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- Glossary
Medial geniculate body
The medial geniculate body (medial geniculate nucleus) is a nucleus of the thalamus (the largest part of the diencephalon). As the central switching point of the auditory pathway, it transmits impulses from the inferior colliculus to the auditory radiation. Together with the lateral geniculate body, it forms the metathalamus.
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Dorsolateral PFC
The dorsolateral prefrontal cortex is the upper (dorsal) and lateral part of the frontal lobe. It is involved in the planning and regulation of complex motor and intellectual actions. According to one experiment, this also seems to include lying. The dorsolateral PFC regulates these and other abilities in coordination with many other areas of the brain with which it is closely linked.
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- Glossary
Horizontal cell
Horizontal cells are nerve cells in the retina. They form a lateral connection between photoreceptors and bipolar cells. In this way, they increase the contrast of what is seen.
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Ventrolateral nuclei
The lower lateral nucleus group of the thalamus is responsible for motor function (movement). It receives inputs from the cerebellum and basal ganglia and has outputs to motor and premotor areas of the cerebral cortex.
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Operculum
Cortical areas of the frontal, temporal, and parietal lobes at the lateral sulcus. The operculum covers the insular cortex.
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- Glossary
Orbitofrontal cortex
A convolution in the orbitofrontal cortex of the cerebral cortex, located anatomically behind the eyes. The orbitofrontal cortex plays a crucial role in decision-making and monitoring social interactions and is correspondingly complex in structure. It consists of four different substructures: the medial, lateral, anterior, and posterior orbital gyri, as well as the rectus gyrus.
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Pallidum
The "pale nucleus" (pallidum = pale) is classified as part of the basal ganglia due to its functional integration and, in terms of evolutionary development, belongs to the telencephalon. It has an inner (medial) and an outer (lateral) segment, which mainly transmit inhibitory impulses to modulate the activity of other parts of the basal ganglia and thalamus.
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Parvocellular
"Parvus" means "small." In the lateral geniculate nucleus, the switching station for visual stimuli in the thalamus, the outer four layers are called parvocellular because, unlike the magnocellular cell layers, they have small cell bodies. The parvocellular system transmits information for the perception of color and fine details.
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- Glossary
Visual pathway
The visual pathway refers to the network of nerve cells involved in visual perception. In mammals, it runs from the retinal ganglion cells in the eye – as the optic nerve to the optic chiasm, then as the visual tract – via the only switching point in the lateral geniculate nucleus to the primary visual cortex.
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- Glossary
Visual radiation
The optic radiation – also known as Gratiolet's optic radiation after its discoverer – distributes visual impulses from the lateral geniculate nucleus to the comparatively very large primary visual cortex.
