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Biological term to describe a crossing
Decussation is used in biological contexts to describe a crossing (due to the shape of the Roman numeral for ten, an uppercase 'X' (decussis), from Latin
Decussation
Crossing of axons between the gracile and cuneate nuclei of the brain
The sensory decussation or decussation of the lemnisci is a decussation (a crossing over) of axons from the gracile nucleus and cuneate nucleus, known
Sensory_decussation
White matter structures within the brainstem's medulla oblongata
anterior median fissure of the medulla oblongata as the pyramidal decussation or motor decussation. Having crossed over at the middle line, they pass down in
Medullary pyramids (brainstem)
Medullary_pyramids_(brainstem)
Specialization of some cognitive functions in one side of the brain
often lateralized to the contralateral hemisphere due to nerve fiber decussation. Because of the functional division of the left and right sides of the
Lateralization of brain function
Lateralization_of_brain_function
Bundle of fibers in the human brain
dorsal aspect of the ventricle and thus assist in forming its roof. The decussation of superior cerebellar peduncle is the crossing of fibers of the superior
Superior_cerebellar_peduncle
Sensory spinal pathway
arcuate fibers and when they cross over the midline, at the sensory decussation in the medulla, they form the medial lemniscus which connects with the
Dorsal column–medial lemniscus pathway
Dorsal_column–medial_lemniscus_pathway
Scientific theory in vertebrate development
'Χ,' chi). A decussation denotes a crossing of bundles of axonal fibers inside the central nervous system. As a result of such decussations: The efferent
Axial_twist_theory
Largest part of the corticospinal tract
(rostral) or below (caudal) the pyramidal decussation. Damage to the body above the pyramidal decussation will cause contralateral motor deficits. For
Lateral_corticospinal_tract
Crossover point of eye nerves
The ventral supraoptic decussation is the crossover (decussation) point for signals from the left and right eye, en route respectively to the right and
Ventral supraoptic decussation
Ventral_supraoptic_decussation
Structure of the brain stem
system. At the caudal part of the medulla these tracts cross over in the decussation of the pyramids obscuring the fissure at this point. Some other fibers
Medulla_oblongata
Anatomical location where two things cross or are joined
crosses the midline at its level of origin or entry (as opposed to a decussation of fibers that cross obliquely). The nine are the anterior commissure
Commissure
Sensory pathway from the skin to the thalamus
(hence the spinothalamic tract being part of the anterolateral system). Decussation usually occurs 1-2 spinal nerve segments above the point of entry. The
Spinothalamic_tract
Posterior part of the brain, adjoining and structurally continuous
can be seen a decussation of fibers which marks the transition from the medulla to the spinal cord. The medulla is above the decussation and the spinal
Brainstem
Axons of neurons that compose the brain's gracile and cuneate nuclei
spinal nerves. Upon decussation (crossing over) from one side of the medulla to the other, also known as the sensory decussation, they are then called
Internal_arcuate_fibers
Each side of the forebrain represents the opposite side of the body
letter 'Χ,' chi). A decussation denotes a crossing of bundles of axonal fibres inside the central nervous system. Due to decussations the efferent connections
Contralateral_brain
Part of the vertebral column in animals
enlargements within the spinal cord. There is no decussation in the lateral corticospinal tract after the decussation at the medullary pyramids. The anterior corticospinal
Spinal_cord
Nerve crossings outside the central nervous system
kinds of crossings of nerve fibres. The chiasm is distinguished from a decussation, which is a crossing of nerve fibres inside the central nervous system
Chiasm_(anatomy)
Part of the auditory pathway
is a structure in the pontine tegmentum formed by the crossing-over (decussation) of a portion of the efferent second-order fibers of the ventral cochlear
Trapezoid_body
Central nervous system pathways
cross over to the opposite side from which they originated, known as decussation. The axons that cross over move to the outer part of the medulla oblongata
Pyramidal_tracts
Part of the brain where the optic nerves cross
invertebrates, ). A midline crossing of nerves inside the brain is called a decussation . In all vertebrates, the optic nerves of the left and the right eye
Optic_chiasm
Anatomical furrow of the brain
constitute the pyramidal decussation. Some fibers, termed the anterior external arcuate fibers, emerge from the fissure above this decussation and curve lateralward
Anterior median fissure of the medulla oblongata
Anterior_median_fissure_of_the_medulla_oblongata
Cranial nerve connecting the eye to the brain
postero-medially towards the optic chiasm, where there is a partial decussation (crossing) of fibers from the temporal visual fields (the nasal hemi-retina)
Optic_nerve
Bundle of nerve fibers (axons) connecting nuclei of the central nervous system
a commissure, decussation, or neural pathway. A commissure connects the two cerebral hemispheres at the same levels, while a decussation connects at different
Nerve_tract
Terminology used to describe the central and peripheral nervous systems
region of each side whereas a decussation connects different brain regions. The brainstem from the front, showing a decussation of the superior pedicle and
Anatomical terms of neuroanatomy
Anatomical_terms_of_neuroanatomy
nucleus → ((decussation) inferior cerebellar peduncle → (contralateral) globose nucleus of cerebellum → superior cerebellar peduncle (decussation) → (rostral
Nucleus_of_Darkschewitsch
Fibers connecting the cerebral cortex and spinal cord
gray matter at the base of the posterior grey column.[citation needed] Decussation of pyramids. The motor tract. Berthold, Daniel Goude, C.-H. "Pyramidbanans
Anterior_corticospinal_tract
Bundle of nerve fibers
sensory information. Therefore, a lesion that is caudal to the sensory decussation where the remaining three-fifths modalities decussate (at the superior
Anterior_white_commissure
Groove in the brainstem
view. Section of the medulla oblongata through the lower part of the decussation of the pyramids. Anterior median fissure Posterior median sulcus Anterior
Posterolateral sulcus of medulla oblongata
Posterolateral_sulcus_of_medulla_oblongata
Sleep in which half the brain remains alert
status. Complete crossing (decussation) of the nerves at the optic chiasm in birds has also stimulated research. Complete decussation of the optic tract has
Unihemispheric slow-wave sleep
Unihemispheric_slow-wave_sleep
Forward-most portion of the brainstem
tectum. The superior colliculi process some visual information, aid the decussation of several fibres of the optic nerve (some fibres remain ipsilateral)
Midbrain
Location in the brain joining the fourth ventricle and spinal canal
plane of the foramen magnum. The obex occurs in the caudal medulla. The decussation of sensory fibers happens at this point. Lesions at the location can
Obex
oblongata Section of the medulla oblongata through the lower part of the decussation of the pyramids. Anterior median fissure Posterior median sulcus Anterior
Posterior median sulcus of medulla oblongata
Posterior_median_sulcus_of_medulla_oblongata
Latin quatere cassate, cassation, concussion, concussive, conquassate, decussation, discuss, discussion, discussive, discutient, excuss, excussio, excussion
List of Greek and Latin roots in English/Q
List_of_Greek_and_Latin_roots_in_English/Q
peduncle. It originates in the cerebellar nuclei, crosses completely in the decussation of the superior cerebellar peduncle, bypasses the red nucleus, and terminates
Cerebellothalamic_tract
Kissing muscles
fibers of the buccinator pass across the lips from side to side without decussation. Superficial to this stratum is a second, formed on either side by the
Orbicularis_oris_muscle
One of the superficial muscles of the superficial posterior compartment of the leg
signal through the internal capsule and down the corticospinal tract. Decussation of the lateral corticospinal tract occurs in the medullary pyramids,
Plantaris_muscle
German-Austrian psychiatrist, neuropathologist and anatomist
mesencephalon (midbrain). This was to become known as "Meynert's decussation" or as "fountain decussation". Die Bloßlegung des Bündelverlaufs im Großhirnstamme,
Theodor_Meynert
fibers → (ipsilateral) nuclei pontis (synapse) → pontocerebellar fibers (decussation within pons) → middle cerebellar peduncle → (contralateral) (cerebellar
Pontocerebellar_fibers
Main human chest muscle
sternocostal and clavicular parts, fusion of clavicular part with deltoid, and decussation in front of the sternum. Deficiency or absence of the sternocostal part
Pectoralis_major
Motor feedback circuit of the brainstem
thus completing the circuit. Of note, this circuit contains a double decussation, implying that a lesion in this tract will cause ipsilateral symptoms
Myoclonic_triangle
Condition characterized by absence of pigment
Misrouting of the retinogeniculate projections, resulting in abnormal decussation (crossing) of optic nerve fibres Photophobia and decreased visual acuity
Albinism_in_humans
Arrangement of leaves on the stem of a plant
of leaf size difference on horizontal shoots Available space theory Decussation Fermat's spiral Helical symmetry Glossary of leaf morphology L-system
Phyllotaxis
Visual ability to perceive the world in 3D
the eye from which they originate. That architecture is labelled hemi-decussation or ipsilateral (same sided) visual projections (IVP). In most other animals
Depth_perception
Medical condition
trunk muscles on the contralateral side due to the upper motor neurons decussation after the brainstem. The cranial nerves and cranial nerve nuclei are
Alternating_hemiplegia
Concurrence of events with no connection
ISBN 978-0-8018-7867-1. David Lane & Andrea Diem Lane, 2010, Desultory Decussation: Where Littlewood’s Law of Miracles meets Jung’s Synchronicity, www.integralworld
Coincidence
White matter structure of the brain
base of the cerebral peduncle with the cerebrospinal fibers, undergo decussation and end in the motor nuclei of the cranial nerves of the opposite side
Internal_capsule
Abnormal exit of tissues or organs from the cavity they usually reside in
acquired, and are more frequent in obese or pregnant women. Abnormal decussation of fibers at the linea alba may be a contributing factor. An incisional
Hernia
Nuclei in the dorsal column of the brainstem
that form the internal arcuate fibers. These cross over at the sensory decussation to form the medial lemniscus. They then synapse with third-order neurons
Dorsal_column_nuclei
Cranial nerve responsible for the face's senses and motor functions
segments with the higher centers. The optic chiasm is the primary cause of decussation; nasal fibers of the optic nerve cross (so each cerebral hemisphere receives
Trigeminal_nerve
†articulus articul- arvus arv- plowed arval as ass- -uss- ace, decussate, decussation, semis, tremissis asinus asin- donkey Aselli, asinine, Asinus, easel
List of Latin words with English derivatives
List_of_Latin_words_with_English_derivatives
One of two nuclei of the oculomotor nerve
fibers. 9. Trochlear nerve, with 9’, its nucleus of origin, and 9", its decussation. 10. Third ventricle. M, M. Median line. Details Parts Provides input
Edinger–Westphal_nucleus
Subphylum of chordates
Kinsbourne, M. (2013). "Somatic twist: a model for the evolution of decussation". Neuropsychology. 27 (5): 511–515. doi:10.1037/a0033662. PMID 24040928
Lancelet
Nerve tract in humans
cerebellum through both the inferior and superior cerebellar peduncles. Decussation of pyramids. Superficial dissection of brain-stem. Lateral view. Deep
Spinocerebellar_tracts
Nerve tracts in the brainstem
His Sr. changed the name to medial to comply with Basle nomenclature. Decussation of pyramids. Listing's law Waitzman, David M.; Oliver, Douglas L. (2002)
Medial longitudinal fasciculus
Medial_longitudinal_fasciculus
Muscle
lower fibers are continued forward into the corresponding lip without decussation. Motor innervation is from the buccal branch of the facial nerve (cranial
Bucinator_muscle
American neuroanatomist (1894–1983)
epilepsy, schizencephaly, arhinencephalia, intellectual disability, decussation of the bulbar pyramidal tract, frontal lobotomies, the limbic cortex
Paul_Ivan_Yakovlev
Motor gyrus of the posterior frontal lobe of the brain
crossing over to the contralateral side in the medulla oblongata (pyramidal decussation), the axons travel down the spinal cord as the lateral corticospinal
Precentral_gyrus
Spanish neuroscientist (1852–1934)
visual map-based theory offering an evolutionary explanation for the decussation of nerve fibres and the chiasm of the optic tract. Ramón y Cajal received
Santiago_Ramón_y_Cajal
Medical condition
gather in the internal capsule before crossing over to the opposite side (decussation) in the medullary pyramids and proceeding down the spinal cord to meet
Upper_motor_neuron_lesion
Extinct genus of mammals
the microstructure of the tooth enamel is characterised by vertical decussation with enamel prism zones bending in an undulatory pattern. The following
Parastrapotherium
Blood vessel
of sensory deficits. If occlusion occurs above the level of sensory decussation, it would affect the proprioception, vibration, and two-point discrimination
Posterior_spinal_artery
Injury to the main nerve bundle in the back of humans
sensations. If the injury is above pyramidal decussation there is contralateral hemiplegia, at the level of decussation there is completed motor loss on both
Spinal_cord_injury
Fibers in the region of the genu of the internal capsule
base of the cerebral peduncle with the cerebrospinal fibers, undergo decussation and end in the motor nuclei of the cranial nerves of the opposite side
Geniculate_fibers
Mauritian physiologist and neurologist
to work out the physiology of the spinal cord, demonstrating that the decussation of the fibres carrying pain and temperature sensation occurs in the cord
Charles-Édouard_Brown-Séquard
Part of the nervous system
and decussates (crosses over) at the midline in the anterior tegmental decussation. In the pons, it is situated medially within the rostral pontine tegmentum
Rubrospinal_tract
Brain region having polygonal, fusiform, piriform neurons
lower part of the dorsal raphe nucleus to an approximate position at the decussation of the superior cerebellar peduncle . The MRN projects extensively to
Median_raphe_nucleus
Topics referred to by the same term
one-pound sterling coin DECUS, the Digital Equipment Computer Users' Society Decussation Decs (disambiguation) This disambiguation page lists articles associated
Decus
Passageway through the neck and shoulder for the long thoracic nerve
fasciculus/Cuneate fasciculus) → Gracile nucleus/Cuneate nucleus 2°: → sensory decussation/arcuate fibers (Posterior external arcuate fibers, Internal arcuate fibers)
Cervicoaxillary_canal
Species of gastropod
the features recorded by Sowerby I are subject to great variation. The decussation of the interspaces is generally only seen on the spire in the young shell;
Anachis_costellata
Medical condition
motor neuron findings. It is contralateral because it occurs before the decussation in the medulla. corticobulbar tract difficulty with contralateral lower
Weber's_syndrome
Species of gastropod
whorls are elegantly rounded. The shell has a minute, gemmuliferous decussation. The smallish aperture is oblong. The outer lip is slightly inflated
Daphnella_hedya
French physician, anatomist and anthropologist (1824–1880)
work. Brown-Séquard became known for demonstrating the principle of decussation, where a vertebrate's neural fibers cross from one lateral side to another
Paul_Broca
Latin quatere cassate, cassation, concussion, concussive, conquassate, decussation, discuss, discussion, discussive, discutient, excuss, excussio, excussion
List of Greek and Latin roots in English/P–Z
List_of_Greek_and_Latin_roots_in_English/P–Z
Medical condition
also found RAD51 products in corticospinal tract axons at the pyramidal decussation. They therefore suggest that RAD51 might be a gene that, when haploinsufficient
Congenital mirror movement disorder
Congenital_mirror_movement_disorder
Neurological disorder with transposition of sensations
Hammond's Theory. This theory assumes that there is an almost complete decussation of sensory fibers within the grey matter. He concludes that with a lesion
Allochiria
French physician and pharmacologist
comme signe de lésion de la protubérance annulaire et comme preuve de la décussation des nerfs faciaux, and a major publication involving pharmacopoeia called
Adolphe-Marie_Gubler
the term "horseshoe-shaped commissure of Wernekinck" as a name for the decussation of the brachium conjunctivum. Anatomie und Physiologie der Centralgebilde
Franz_Joseph_Julius_Wilbrand
Component of the auditory system
delivering shock stimuli to the floor of the fourth ventricle (at the decussation of the COCB). Galambos observed a suppression of the compound action
Olivocochlear_system
Species of gastropod
gradate manner. The surface is closely acutely ribbed, the transverse decussations somewhat noticeable in the interstices, and these in some specimens give
Vanitrochus_tragema
Species of gastropod
obliquely, plicately striated and decussated with fine impressed lines, the decussation is sometimes obsolete, more tumid and smoother beneath. The shell color
Ariophanta_interrupta
French anatomist, ophthalmologist and surgeon
structure of the spinal cord, and gave an early, detailed description of the decussation of the pyramids. He also provided the first clinical description of symptoms
François_Pourfour_du_Petit
Austrian-born pediatric neurologist and cognitive neuroscientist
Later publications include: Somatic Twist: A Model for the Evolution of Decussation (2013); Imitation and Entrainment: Brain Mechanisms and Social Consequences
Marcel_Kinsbourne
Dental enamel
F., & Martinand-Mari, C. (2018). Relationships between enamel prism decussation and organization of the ameloblast layer in rodent incisors. The Anatomical
Enamel_prism
Species of gastropod
They are longitudinally and spirally ribbed. The interstices of the decussations appear as pitted. On the body whorl the longitudinal sculpture becomes
Turbonilla_laminata
Species of mollusc
with a surface characterized by coarse striation and minute granulate decussation from spiral striae, giving it a silky texture. Its coloration is deep
Amastra_sericea
Inability to turn out the eye due to dysfunction of the abducens nerve
comme signe de lésion de la protubérance annulaire et comme preuve de la décussation des nerfs faciaux". Gazette Hebdomadaire de Médecine et de Chirurgie
Sixth_nerve_palsy
Part of the spinal cord
do not cross to the opposite side of the brainstem in the pyramidal decussation. This tract descends in the lateral white column anterior to the lateral
Anterolateral corticospinal tract
Anterolateral_corticospinal_tract
Neuron cluster of the brain stem
the spinal cord in a mostly ipsilateral manner, although there is some decussation. It projects to the vermis in the anterior lobe, the pyramis and the
Paramedian_reticular_nucleus
Neuron cluster in the brainstem
a means to receive compensatory contralateral input at a downstream decussation. Thus, the main distinction between an UMN and LMN lesion is that in
Facial_motor_nucleus
shake cassate, cassation!-- desiderative --, concussion, conquassate, decussation, discuss, discussion, discussive, discutient, percussion, percussive
List of Latin verbs with English derivatives
List_of_Latin_verbs_with_English_derivatives
plate also secretes netrins. The netrins act as chemoattractants to decussation of pain and temperature sensory neurons in the alar plate across the
Neuromere
German anatomist
Wernekinck's student Franz Joseph Julius Wilbrand in 1840; also known as the decussation of the brachium conjunctivum or of the superior cerebellar peduncle.
Friedrich Christian Gregor Wernekinck
Friedrich_Christian_Gregor_Wernekinck
Species of gastropod
The surface is cut into a finely densely granulated pattern by the decussation of numerous spiral striae with close, regular, impressed lines of increment
Calliostoma_tricolor
Motor nucleus of cranial nerve IV
in that its axons run dorsally and cross the midline at the trochlear decussation (located in the superior medullary velum) in the midbrain before emerging
Trochlear_nucleus
Species of gastropod
between 1.5 mm and 3.7 mm. The shell resembles Alvania lineata, but the decussations are deeper, giving the nodules a rough appearance. This species occurs
Alvania_aspera
Part of the brain's frontal cortex
crossing over to the contralateral side in the medulla oblongata (pyramidal decussation), the axons travel down the spinal cord as the lateral corticospinal
Primary_motor_cortex
Species of gastropods
The small shell is fusiform and turreted. The eight whorls have little decussation and other point of distinction. The apical whorls are glassy and shining
Acrista_latirella
Theory in evolutionary biology
Pettigrew JD, Maseko BC, Manger PR (April 2008). "Primate-like retinotectal decussation in an echolocating megabat, Rousettus aegyptiacus". Neuroscience. 153
Flying_primate_hypothesis
Hypothesis in developmental biology
Kinsbourne, Marcel (2013). "Somatic twist: A model for the evolution of decussation". Neuropsychology. 27 (5): 511–5. doi:10.1037/a0033662. PMID 24040928
Inversion (evolutionary biology)
Inversion_(evolutionary_biology)
Extinct genus of notoungulates
Hunter-Schreger Bands are generally oblique and steady, even if they present a low decussation on both sections and are less discernible on some transverse sections
Protypotherium
DECUSSATION
DECUSSATION
DECUSSATION
DECUSSATION
Male
Native American
Native American Algonquin name POWWAW means "priest."
Girl/Female
Arabic
Soft
Surname or Lastname
English
English : variant spelling Bascom.
Girl/Female
American, Arabic, Australian, Muslim
Elevated; Lofty
Girl/Female
Muslim
(Daughter of Maalik bin Amr al adwaniyah)
Girl/Female
Indian, Sanskrit, Traditional
Goddess of Durga
Boy/Male
Basque
Wine.
Girl/Female
Hindu, Indian, Marathi
A Goddess
Boy/Male
Bengali, Gujarati, Hindu, Indian, Malayalam, Marathi, Sanskrit
Happy Like Cloud
Boy/Male
Tamil
Winning over a group
DECUSSATION
DECUSSATION
DECUSSATION
DECUSSATION
DECUSSATION
n.
Act of crossing at an acute angle, or state of being thus crossed; an intersection in the form of an X; as, the decussation of lines, nerves, etc.