Definitions for claustrum
claus·trum

Princeton's WordNetRate this definition:0.0 / 0 votes

1. claustrumnoun

   a layer of grey matter in the brain adjacent to the lenticular nucleus

WikipediaRate this definition:0.0 / 0 votes

1. Claustrum

   The claustrum (Latin, meaning "to close" or "to shut") is a thin, bilateral collection of neurons and supporting glial cells, that connects to cortical (e.g., the pre-frontal cortex) and subcortical regions (e.g., the thalamus) of the brain. It is located between the insula laterally and the putamen medially, separated by the extreme and external capsules respectively. The blood supply to the claustrum is fulfilled via the middle cerebral artery. It is considered to be the most densely connected structure in the brain, allowing for integration of various cortical inputs (e.g., colour, sound and touch) into one experience rather than singular events. The claustrum is difficult to study given the limited number of individuals with claustral lesions and the poor resolution of neuroimaging.The claustrum is made up of various cell types differing in size, shape and neurochemical composition. Five cell types exist, and a majority of these cells resemble pyramidal neurons found in the cortex. Within the claustrum, there is no organization of cell types compared to the cortex, and the somas of the cells can be a pyramidal, fusiform or circular shape. The principal cell type found in the claustrum is type 1 cells, which are large cells covered in spiny dendrites. The claustrum usually connects to the cortex in an ipsilateral manner; however, the few that travel contralaterally are considerably weaker than the former. The claustrum acts as a conductor for inputs from the cortical regions so these respective areas do not become unsynchronized. Without the claustrum, one could respond to stimuli that are familiar to the individual but not to complex events. Additionally, the claustrum is essential in combining sensory and motor modalities so that various anatomical patterns are present. One of the proposed functions of the claustrum is to differentiate between relevant and irrelevant information so that the latter can be ignored. Cortical components of consciousness include the fronto-parietal cortex, cingulate and precuneus. Due to the claustrum's widespread connectivity to these areas, it is suggested that it may play a role in both attention and consciousness. The neural networks that mediate sustained attention and consciousness implicate numerous cortical areas, many of which overlap in connectivity with the claustrum. Previous clinical reports suggest that conscious processes are lateralized to the left hemisphere in humans.

ChatGPTRate this definition:0.0 / 0 votes

1. claustrum

   The claustrum is a thin, irregular sheet of neurons, located deep within the brain, that is supposed to play a role in consciousness. It is a part of the brain situated between the inner surface of the neocortex and the outer surface of the putamen and the caudate nucleus in the center of the brain. The primary role of the claustrum, while still under debate, is generally believed to be the coordination and synchronization of sensory input and motor output.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Claustrumnoun

   a thin lamina of gray matter in each cerebral hemisphere of the brain of man

2. Etymology: [L., a bolt or bar.]

WikidataRate this definition:0.0 / 0 votes

1. Claustrum

   The claustrum is a thin, irregular, sheet of neurons which is attached to the underside of the neocortex in the center of the brain. It is suspected to be present in the brains of all mammals. The claustrum is a fraction of a millimetre to a few millimetres deep, and is a vertical curved sheet of subcortical gray matter oriented sagittally between the white matter tracts of the external capsule and extreme capsule. The claustrum is lateral to the putamen and medial to the insular cortex and is considered by some sources to be part of the basal ganglia. There are lateral and medial tracts connecting the claustrum to many parts of the cortex and perhaps to the hippocampus, the amygdala, and the caudate nucleus. One of the interesting features of the claustrum is the uniformity in the types of cells, indicating a uniform type of processing by all claustral neurons. Though organized into modality specific regions, the claustrum contains a great deal of longitudinal connections between its neurons that could serve to synchronize the entire anterior-posterior extent of the claustrum. Francis Crick and Christof Koch have compared the claustrum to the conductor of an orchestra. The different parts of the cortex must play in harmony or else the result is a cacophony of sounds instead of a beautiful symphony. The claustrum may be involved in widespread coordination of the cerebral cortex, using synchronization to achieve a seamless timescale between both the two cortical hemispheres and between cortical regions within the same hemisphere, resulting in the seamless quality of conscious experience.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Claustrum

   klaws′trum, n. a thin layer of gray matter in the substance of the hemispheres of the brain:—pl. Claus′tra. [L.]

EntomologyRate this definition:0.0 / 0 votes

1. Claustrum

   the structure uniting the wings in flight, whether by hooks, by a thickening of the margin, or by a jugum.

Matched Categories

1. • Basal Ganglion

How to pronounce claustrum?

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Numerology

1. Chaldean Numerology

   The numerical value of claustrum in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of claustrum in Pythagorean Numerology is: 2

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=claustrum
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Claustrum
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/claustrum
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=claustrum
6. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=claustrum
7. ^ Entomology
   https://www.gutenberg.org/files/22748/22748-h/22748-h.htm#:~:text=claustrum