Thalamocortical radiations


Thalamocortical radiations

Infobox Brain
Name = PAGENAME
Latin =
GraySubject =
GrayPage =


Caption = Deep dissection of brain-stem. Lateral view.


Caption2 = Dissection of brain-stem. Dorsal view.
IsPartOf =
Components =
Artery =
Vein =
BrainInfoType = ancil
BrainInfoNumber = 399
MeshName =
MeshNumber =
DorlandsPre = f_05
DorlandsSuf = 12361630

Thalamocortical radiations are the fibers between the thalamus and the cerebral cortex.

The "thalamocortical loop" is the functional loop between these two structures. The loop consists of projections from thalamus to cortex (feedforward and driving inputs) and from cortex back to thalamus. These projections usually remain within the same sensory or motor nuclei and cortex areas. The loops are involved in the production of sleep spindles, absence seizures, and the control of the propagation of sensory information.

Computational neuroscientists are particularly interested in thalamocortical loops because they represent a structure that is dispoportionally larger in humans than other mammals (when body size is taken into account) and thus may make a significant contribution to humans' special cognitive abilities. [cite journal |author=Rodriguez A, Whitson J, Granger R |title=Derivation and analysis of basic computational operations of thalamocortical circuits |journal=Journal of cognitive neuroscience |volume=16 |issue=5 |pages=856–77 |year=2004 |pmid=15200713 |url=http://www.ics.uci.edu/~granger/RHGtc4s.pdf |doi=10.1162/089892904970690]

References


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • thalamocortical fibers — sensory nerve fibers that connect the dorsal thalamus to the cerebral cortex, which together form the peduncles of the thalamus; called also thalamic radiations, radiations of thalamus, and thalamocortical projections …   Medical dictionary

  • thalamic radiations — the four two way radiations of thalamocortical fibers that connect the dorsal thalamus with many parts of the cerebral cortex; they form a major portion of the internal capsule and the corona radiata. See terms beginning radiatio thalami, under… …   Medical dictionary

  • Striatum — Brain: Striatum purple=caudate and putamen, orange=thalamus …   Wikipedia

  • Neural pathway — A neural pathway, neural tract, or neural face, connects one part of the nervous system with another and usually consists of bundles of elongated, myelin insulated neurons, known collectively as white matter. Neural pathways serve to connect… …   Wikipedia

  • Corticospinal tract — Pyramidal tract redirects here. This page refers to the nerve fibres underlying the pyramids. For the actual area of the brain, Pyramids, see Pyramid of medulla oblongata. Brain: Corticospinal tract Deep dissection of brain stem. Lateral view. (… …   Wikipedia

  • Posterior column-medial lemniscus pathway — Originating in peripheral sensory receptors, the posterior column medial lemniscus pathway transmits fine touch and conscious proprioceptive information to the brain. Latin via column …   Wikipedia

  • Medial lemniscus — Brain: Medial lemniscus The sensory tract. (Medial lemniscus labeled at center right.) Coronal …   Wikipedia

  • Nigrostriatal pathway — The nigrostriatal pathway is a neural pathway that connects the substantia nigra with the striatum. It is one of the four major dopamine pathways in the brain, and is particularly involved in the production of movement, as part of a system called …   Wikipedia

  • Dorsal spinocerebellar tract — Posterior spinocerebellar tract is labeled in blue at right …   Wikipedia

  • Cuneate nucleus — Brain: Cuneate nucleus Dissection of brain stem. Dorsal view. (Label for nucleus cuneatus is on left, third from the bottom.) …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.