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Topic: Arcuate fasciculus

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Conduction aphasia

Expressive aphasia

Aphasia

Receptive aphasia

Language

Transposition

	MNEMON.net
		This was later confirmed with the discovery of the arcuate fasciculus that connects the two areas.
		Arcuate fasciculus: The arcuate fasciculus translates as 'arch shaped bundle' and is the name given to the fibres that connect Wernicke's area to Broca's area.
		It is thought that the arcuate fasciculus conveys information about the sounds of words to the frontal lobes; hence any damage to this pathway causes an inability to learn or say new words.
	mnemon.net /teaching/psychobiology/memory.htm (2621 words)

	IX. Neurology. 4a. The Hind-brain or Rhombencephalon. Gray, Henry. 1918. Anatomy of the Human Body.
		The ventral spinocerebellar fasciculus is continued upward on the lateral surface of the medulla oblongata in the same relative position it occupies in the spinal cord until it passes under cover of the external arcuate fibers.
		The fasciculus gracilis is placed parallel to and along the side of the posterior median fissure, and separated from the fasciculus cuneatus by the postero-intermediate sulcus and septum.
		That on the fasciculus gracilis is named the clava, and is produced by a subjacent nucleus of gray matter, the nucleus gracilis; that on the fasciculus cuneatus is termed the cuneate tubercle, and is likewise caused by a gray nucleus, named the nucleus cuneatus.
	www.bartleby.com /107/187.html (10328 words)

	Arcuate fasciculus - Psychology Wiki - a Wikia wiki
		Arcuate fasciculus - Psychology Wiki - a Wikia wiki
		The arcuate fasciculus links the green area (Wernicke's) to the blue area (Broca's), disruption of this pathway results in conduction aphasia.
		The arcuate fasciculus (Latin, curved bundle) is the neural pathway connecting the posterior part of the temporoparietal junction with the frontal cortex in the brain.
	psychology.wikia.com /wiki/Arcuate_fasciculus (437 words)

	Do You See What I Hear? Imaging Auditory Hallucinations
		Significantly higher values were observed in control subjects in the long anterior-to-posterior association fibers in large parts of the arcuate fasciculus, the uncinate fasciculus, and the inferior fasciculus in both hemispheres.
		The regions with higher fractional anisotropy in patients with schizophrenia and hallucinations were located in the lateral left and right temporoparietal section of the arcuate fasciculus close to the posterior end of the Sylvian fissure—where the Wernicke area is located—and close to the cortical auditory regions.
		“A disruption of the arcuate fasciculus leads to a disturbance of the neuronal connections from the frontal Broca area to the temporal Wernicke area, which results in a disturbance of the stream of speech.
	www.neuropsychiatryreviews.com /aug04/npr_aug04_auditory.html (727 words)

	Highbeam Encyclopedia - Search Results for arcuate
		A small bundle or bunch, especially a bundle of nerve fibres such as the arcuate fasciculus, fasciculus cuneatus, fasciculus gracilis, inferior longitudinal fasciculus, superior longitudinal fasciculus, subthalamic fasciculus, or uncinate fasciculus.
		A term coined in 1965 by the US neurologist Norman Geschwind (1926–84) for a condition in which information transfer between parts of the brain is interrupted or blocked.
		Arcuate Absorbent Article with Laterally Extending Flaps having Longitudinal Stretch.
	www.encyclopedia.com /searchpool.asp?target=arcuate (524 words)

	Research areas at the IRC (Site not responding. Last check: 2007-10-19)
		Correlation of FA with subject age was also seen in the right inferior longitudinal fasciculus and the left arcuate fasciculus.
		The findings in the left arcuate fasciculus lend support to a hypothesis of a continued refinement and strengthening of connections between classical (Broca's and Wernicke's) language areas, compatible with the ongoing refinement of language function during normal development.
		Composite map of the trace of the apparent diffusion coefficient negatively correlated with subject age in a normal pediatric population.
	www.irc.cchmc.org /peddti.htm (396 words)

	GE Healthcare - Community - Surgical Evaluation of Brain Tumors (Site not responding. Last check: 2007-10-19)
		Prior to the surgery, displacement of the left arcuate fasciculus (a fiber tract that connects the receptive speech areas to the expressive speech areas) caused by the tumor mass was clearly observed in the DTI images.
		Before the surgery, distortion of the left arcuate fasciculus due to the tumor mass was clearly revealed by DTI.
		After the surgery, the left arcuate fasciculus began to restore to the normal position, which correlates to the improvement of the patient's speech ability.
	www.gehealthcare.com /usen/community/mr/products/case_of_the_week/products/cotw13.html (877 words)

	Structural disconnectivity in schizophrenia: a diffusion tensor magnetic resonance imaging study -- BURNS et al. 182 ...
		the uncinate fasciculus and the arcuate fasciculus, are abnormal
		longitudinal or arcuate fasciculus (Dejerine, 1895; Petrides and Pandya, 1988).
		MR Imaging of the Temporal Stem: Anatomic Dissection Tractography of the Uncinate Fasciculus, Inferior Occipitofrontal Fasciculus, and Meyer's Loop of the Optic Radiation
	bjp.rcpsych.org /cgi/content/full/182/5/439 (3459 words)

	High-Resolution Line Scan Diffusion Tensor MR Imaging of White Matter Fiber Tract Anatomy -- Mamata et al. 23 (1): 67 ...
		Fibers of the cingulum (pink), arcuate fasciculus (green), and uncinate fasciculus (orange) pass through the section (dots).
		Fibers of the craniocaudal tracts (superior cerebellar peduncle, medial longitudinal fasciculus, tectospinal tract, dorsal and ventral trigeminothalamic tracts, central tegmental tract, spinothalamic tract, and rubrospinal tract) can be seen in the posterior part of the pons (pink).
		The pyramidal tract is shown in yellow and the medial longitudinal fasciculus in pink.
	www.ajnr.org /cgi/content/figsonly/23/1/67 (860 words)

	.: Corvallis Gazette-Times :. Archives
		The abnormalities occurred in a bundle of fibers called the arcuate fasciculus, which connects Broca’s area in the left frontal lobe with Wernicke’s area in the left temporal lobe, a fiber pathway linked to higher aspects of language and auditory functions.
		The fibers in the arcuate fasciculus bundle are among the last parts of the brain to be formed during adolescence.
		The formation of the arcuate fasciculus bundle appeared normal in the adolescents who didn’t smoke and showed some signs of abnormalities in those who did.
	www.gazettetimes.com /articles/2005/12/01/news/nation/thunat03.txt (763 words)

	William H. Calvin and Derek Bickerton, Lingua ex Machina, chapter 8 (MIT Press)
		But the second largest is the arcuate fasciculus, connecting the temporal lobe with the frontal lobe on the same side.
		The left arcuate fasciculus has got to be heavily involved in communicating temporal lobe concepts to any sentence-planning machinery in the frontal lobe part of the language system.
		The arcuate fasciculus is a mere pipeline, analogous to a fiber optic bundle of thousands of thin light pipes.
	www.williamcalvin.com /LEM/LEMch8.htm (2994 words)

	tabulas.com: tabulas.com
		Due to the damage caused by her recent stroke, an area of her brain called the arcuate fasciculus has been left impaired.
		The arcuate fasciculus takes the message that is being comprehended and sends it to Broca's area to allow language expression.
		Because there is an impairment in the arcuate fasciculus, your wife can still understand language and she can still express language, but she has difficulty with tasks such as repeating or reading aloud because it involves the communication of the two main areas of language.
	www.tabulas.com /~JillianS/783890.html (808 words)

	Lesson 4: Lecture 6 Transcript (Site not responding. Last check: 2007-10-19)
		Well in addition to that, these two structures, there is a pathway and this pathway is called the arcuate fasciculus.
		Basically the arcuate fasciculus is an axon pathway, and that’s all it is. Basically connects Wernicke’s and Broca’s areas.
		Note that the arcuate fasciculus is underneath the outer layers of cortex and is not a cortical structure.
	www.class.uidaho.edu /psyc372/lessons/lesson04/transcript_4-6.htm (2201 words)

	Article Figures and Tables (Site not responding. Last check: 2007-10-19)
		C: An axial DT image corresponding to the same level as the image in A. The fiber pathways of the corona radiata in blue (short arrow), arcuate fasciculus in green (arrowhead), and corpus callosum in red (long arrow) appear in the same anatomical relationship, compared with their corresponding pathway in the contralateral hemisphere.
		D: A coronal DT image at the level of the genu of the corpus callosum corresponding to the image in B. Note the intact position of the associated white matter tract (arrow) in the left frontal lobe in a region invaded with neoplastic cells.
		The green fibers of the arcuate fasciculus (arrow) are deviated to the left, over the lateral edge of the tumor.
	www.thejns-net.org /jns/issues/v97n3/fig_tab/n0970568_f2.html (585 words)

	[No title] (Site not responding. Last check: 2007-10-19)
		The arcuate fasciculus is a bundle of nerve fibers, discovered by Wernicke to form a connection between Broca’s and Wernicke’s area.
		When someone speaks to us, the speech is received and comprehended in Wernicke’s area, then transferred via the arcuate fasciculus to Broca’s area where preparations are made to produce a response.
		Conduction aphasia is caused by damage to the arcuate fasciculus.
	k.domaindlx.com /iolplokali/dersnolari2/dersnotlari/3_sinif/introduction_to_linguistic/mesutkus_introduction_to_linguistic/15.doc (993 words)

	Diffusion-Tensor MR Imaging and Fiber Tractography: A New Method of Describing Aberrant Fiber Connections in ...
		The superior longitudinal fasciculus (slf) is connected to the arcuate fasciculus (af); these fiber tracts are generated from a single ROI.
		Fiber tracts of other longitudinal fibers like the cingulum (c) and inferior longitudinal fasciculus (ilf) are also generated from coronal images.
		(d) Axial FT image, generated from an ROI in the posterior part of the corona radiata and the inferior longitudinal fasciculus, shows decreased fiber connections around the subcortex of the affected temporo-occipital lobe (arrowheads) compared with the branching pattern of the normal contralateral occipital cortex.
	radiographics.rsnajnls.org /cgi/content/figsonly/25/1/53 (4519 words)

	verbal
		Also, an association (arcuate) fiber link, such as the arcuate fasciculus, connecting verbal components.
		In a less robust form, the arcuate fasciculus may predate--and thus may be a preadaptation for--speech.
		Similar tracts of association fibers (the superior longitudinal fasciculus, inferior longitudinal fasciculus, and uncinate fasciculus) found in the right-brain hemisphere connect nonverbal centers of the cerebral cortex.
	members.aol.com /doder1/verbal1.htm (1473 words)

	Marijuana Use, Schizophrenia Show Similar Patterns in Developing Adolescent Brains: Presented at RSNA (Site not responding. Last check: 2007-10-19)
		Diffusion tensor imaging depicts the motion of water molecules in the brain, and Dr. Ashtari and colleagues looked specifically at the arcuate fasciculus, a bundle of fibers in the left frontal lobe.
		The researchers compared the arcuate fasciculus development in the brains of 12 healthy, early adolescents with 12 later adolescents; 11 schizophrenic patients with 17 matched controls; 15 schizophrenic patients who smoke marijuana with 17 matched controls; and 15 marijuana smokers with 15 matched non-drug users.
		Among the finding, abnormalities in the arcuate fasciculus seen in those who smoked marijuana or those with schizophrenia were significantly associated with worse working memory function.
	www.pslgroup.com /dg/2559d2.htm (506 words)

	[No title] (Site not responding. Last check: 2007-10-19)
		The arcuate fasciculus connects Broca's motor speech area with Wernicke's receptive speech area.
		The uncinate fasciculus joins the inferior frontal and temporal lobes.
		Identify the bulging nuclear mass at #3 and recall the cortical tissue that was removed to expose it.
	isc.temple.edu /neuroanatomy/lab/practice_exams/cerebral/2 (67 words)

	Intraoperative mapping of the subcortical language pathways using direct stimulations: An anatomo-functional study -- ...
		Deeply, the posterior boundary was represented laterally (small arrows) and superiorly (curve arrow) by the antero-inferior part of the arcuate fasciculus (eliciting anomia when stimulated), as shown by the projection of the surgical cavity on a classical anatomical schema (from Bossy, 1991
		Deeply, the anterior boundary was represented laterally and superiorly (arrows) by the postero-inferior part of the arcuate fasciculus (eliciting anomia during intraoperative stimulations), as shown by the projection of the surgical cavity on an anatomical schema (from Bossy, 1991
		uncinate fasciculus at the fronto-temporal junction, and of
	brain.oxfordjournals.org /cgi/content/full/125/1/199 (6724 words)

	Marijuana-Schizophrenia Link in Brain Scans
		The results of studies in adolescents and schizophrenics strongly support the hypothesis that using marijuana is a risk factor for developing schizophrenia "if the teenager has a family history of schizophrenia," Dr Ashtari reportedly said at a press conference sponsored by the RSNA.
		The arcuate fasciculus is a fibrous bundle that connects Broca’s area (in the frontal lobe) and Wernicke’s area (in the left temporal lobe).
		According to Dr Brant-Zawadzki, the arcuate fasciculus is an area of the brain in which "myelination continues throughout adolescence.
	www.drugs.com /xq/cfm/pageID_1645/qx/index.htm (624 words)

	APHASIAS
		This is caused by damage to the arcuate fasciculus, a pathway that connects Wernicke’s to Broca’s area.
		Information actually travels in both directions along the arcuate fasciculus, and it is believed that this connection is involved in keeping the short-term memory of a sound of a word alive.
		Thus, one working model suggests that speech sounds can be sent from Wernicke’s area to Broca’s area via the arcuate fasciculus, but that information on the meaning of words is sent via another pathway.
	www.sci.sdsu.edu /classes/psychology/psy760/lang.htm (857 words)

	Method for Combining Information from White Matter Fiber Tracking and Gray Matter Parcellation -- Park et al. 25 (8): ...
		The major eigenvector of each voxel is displayed with line (in-plane component of the eigenvector) and color (from green to red, out-of-plane component of the eigenvector) on the background image of FA.
		The authors manually labeled the major fiber bundles (ie, CC, corpus callosum; SLF, superior longitudinal fasciculus; ILF, inferior longitudinal fasciculus; CB, cingulum bundle; CST, corticospinal tract; UF, uncinate fasciculus; AF, arcuate fasciculus; Af, arcuate fibers; AL, anterior limb of internal capsule; PL, posterior limb of internal capsule; and Fx, fornix).
		CC, corpus callosum; CR, corona radiata; SLF, superior longitudinal fasciculus; OR, optic radiation; CB, cingulum bundle; SCP, superior cerebellar peduncle; CST, corticospinal tract; UF, uncinate fasciculus; and AC, anterior commissure.
	www.ajnr.org /cgi/content/figsonly/25/8/1318 (564 words)

	Multiple Sclerosis - Abstracts 11c-2g
		This study was conducted to further establish the significance of the previously reported association between Depressive Symptoms and DeMyelinating lesions in the region of the Left Arcuate Fasciculus in Multiple Sclerosis patients.
		We found that lesions of the Left Arcuate Fasciculus region were selectively associated with BDI items expressing patients' Affective Symptoms and Somatic Complaints.
		These results show that lesions in the Left Arcuate Fasciculus region are associated with the core of the Depressive Syndrome rather than marginal symptoms and, thus, further suggest that this Left SupraInsular Brain region involves White Matter tracts relevant to Mood Regulation.
	members.tripod.com /~ThJuland/abstr11c-2g.html (2535 words)

	Aphasia -- eCureMe.com
		Consequently, their speech is slow and slurred, and they speak in short phrases produced with great effort.
		Another important language area in the brain is Wernicke's area, which normally communicates with Broca's area via a bundle of nerves known as the arcuate fasciculus.
		When the arcuate fasciculus is damaged, it may cause a condition known as conduction aphasia, in which patients understand language normally, but are unable to repeat words.
	www.ethex.com /emyhealth/data/Aphasia.asp (296 words)

	Sect. 8, Ch. 15: Speech Functions: The Arcuate Fasciculus (Site not responding. Last check: 2007-10-19)
		Lesions affecting the arcuate fasciculus, a white matter tract connecting Wernicke's and Broca's speech regions, results in conduction aphasia.
		Like persons with Wernicke's aphasia, conduction aphasiacs have many paraphasic errors, in which incorrect words or sounds are substituted.
		Although reading aloud is abnormal, conduction aphasiacs are able to read silently with good comprehension.
	www.lib.mcg.edu /edu/eshuphysio/program/section8/8ch15/s8c15_14.htm (87 words)

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