Limen insulae

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Limen insulae
Identifiers
NeuroNames 2072
NeuroLex ID birnlex_1493
TA A14.1.09.155
FMA 75266
Anatomical terms of neuroanatomy

The limen insulae forms the junction point between anterior and posterior stem of the lateral sulcus. It is the lateral most limit of the anterior perforated substance and the starting point of the insular cortex.

The limen insulae translates as the threshold to the insula, and is the point at which the insular cortex is continuous with cortex over the amygdala and superior temporal gyrus.


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Cingulate cortex

The cingulate cortex is a part of the brain situated in the medial aspect of the cerebral cortex. The cingulate cortex includes the entire cingulate gyrus, which lies immediately above the corpus callosum, and the continuation of this in the cingulate sulcus. The cingulate cortex is usually considered part of the limbic lobe.

Brodmann area Regions of the human cerebral cortex identified by Korbinian Brodmann

A Brodmann area is a region of the cerebral cortex, in the human or other primate brain, defined by its cytoarchitecture, or histological structure and organization of cells.

Frontal lobe part of the brain

The frontal lobe is the largest of the four major lobes of the brain in mammals, and is located at the front of each hemisphere. It is separated from the parietal lobe by a groove between tissues called the central sulcus, and from the temporal lobe by a deeper groove called the lateral sulcus. The most anterior rounded part of the frontal lobe is known as the frontal pole, one of the three poles of the cerebrum.

Internal capsule white matter structure situated in the inferomedial part of each cerebral hemisphere of the brain

The internal capsule is a white matter structure situated in the inferomedial part of each cerebral hemisphere of the brain. It carries information past the basal ganglia, separating the caudate nucleus and the thalamus from the putamen and the globus pallidus. The internal capsule contains both ascending and descending axons, going to and coming from the cerebral cortex. It also separates the caudate nucleus and the putamen in the dorsal striatum, a brain region involved in motor and reward pathways.

Pyramidal tracts include both the corticobulbar tract and the corticospinal tract

The pyramidal tracts include both the corticobulbar tract and the corticospinal tract. These are aggregations of efferent nerve fibers from the upper motor neurons that travel from the cerebral cortex and terminate either in the brainstem (corticobulbar) or spinal cord (corticospinal) and are involved in the control of motor functions of the body.

Spinothalamic tract Sensory pathway from the skin to the thalamus

The spinothalamic tract is a sensory pathway from the skin to the thalamus. From the ventral posterolateral nucleus in the thalamus, sensory information is relayed upward to the somatosensory cortex of the postcentral gyrus.

Lateral sulcus fold of the brain (primary motor cortex) separating the frontal and parietal lobes superiorly from the temporal lobe inferiorly.

The lateral sulcus is one of the most prominent features of the human brain. The lateral sulcus is a deep fissure in each hemisphere that separates the frontal and parietal lobes from the temporal lobe. The insular cortex lies deep within the lateral sulcus.

Inferior frontal gyrus Part of the brains prefrontal cortex

The inferior frontal gyrus(IFG), (gyrus frontalis inferior), is the lowest positioned gyrus of the frontal gyri, of the frontal lobe, and is part of the prefrontal cortex.

Brodmann areas 41 and 42

Brodmann areas 41 and 42 are parts of the primary auditory cortex.

Insular cortex Portion of the mammalian brain

The insular cortex is a portion of the cerebral cortex folded deep within the lateral sulcus within each hemisphere of the mammalian brain.

Upper motor neuron Neurons in the brain that carry signals to lower motor neurons, which signal muscles.

Upper motor neurons (UMNs) is a term introduced by William Gowers in 1886. They are found in the cerebral cortex and brainstem and carry information down to activate interneurons and lower motor neurons, which in turn directly signal muscles to contract or relax. UMNs in the cerebral cortex are the main source of voluntary movement.

Secondary somatosensory cortex

The human secondary somatosensory cortex is a region of cortex in the parietal operculum on the ceiling of the lateral sulcus.

Middle cerebral artery one of the three major paired arteries that supply blood to the cerebrum.

The middle cerebral artery (MCA) is one of the three major paired arteries that supply blood to the cerebrum. The MCA arises from the internal carotid and continues into the lateral sulcus where it then branches and projects to many parts of the lateral cerebral cortex. It also supplies blood to the anterior temporal lobes and the insular cortices.

Lobes of the brain part of the cerebral cortex

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The amygdalofugal pathway is one of the three major efferent pathways of the amygdala, meaning that it is one of the three principal pathways by which fibers leave the amygdala. It leads from the basolateral nucleus and central nucleus of the amygdala. The amygdala is a limbic structure in the medial temporal lobe of the brain. The other main efferent pathways from the amygdala are the stria terminalis and anterior commissure.

Anterior olfactory nucleus

The anterior olfactory nucleus is a portion of the forebrain of vertebrates.

The sensory cortex can refer informally to the primary somatosensory cortex, or it can be used as a term for the primary and secondary cortices of the different senses : the visual cortex on the occipital lobes, the auditory cortex on the temporal lobes, the primary olfactory cortex on the uncus of the piriform region of the temporal lobes, the gustatory cortex on the insular lobe, and the primary somatosensory cortex on the anterior parietal lobes. Just posterior to the primary somatosensory cortex lies the somatosensory association cortex, which integrates sensory information from the primary somatosensory cortex to construct an understanding of the object being felt. Inferior to the frontal lobes are found the olfactory bulbs, which receive sensory input from the olfactory nerves and route those signals throughout the brain. Not all olfactory information is routed to the olfactory cortex: some neural fibers are routed to the supraorbital region of the frontal lobe, while others are routed directly to limbic structures. The direct limbic connection makes the olfactory sense unique.

Lateral dorsal nucleus of thalamus

The lateral dorsal nucleus is a nucleus of the thalamus. It is the most anterior of the dorsal lateral nuclei.

Limen is a word of equivocal semantics written in the Latin alphabet, and used in many different modern languages, including English. It generally, but not necessarily, represents the Latin word limen, plural limina, “threshold,” or is a transliteration into the Latin alphabet of the ancient Greek word, λιμήν, “harbor, refuge, creek.” Some specific uses are: