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Interneuron relaying signals between sensory and motor neurons in the spinal cord
A spinal interneuron, found in the spinal cord, relays signals between (afferent) sensory neurons, and (efferent) motor neurons. Different classes of
Spinal_interneuron
Part of the vertebral column in animals
independently control reflexes. It is also the location of groups of spinal interneurons that make up the neural circuits known as central pattern generators
Spinal_cord
Neurons that are not motor or sensory
Interneurons (also called internuncial neurons, association neurons, connector neurons, or intermediate neurons) are neurons that are not specifically
Interneuron
Semen discharge from the male reproductive tract
the spinal cord, made up of groups of spinal interneurons, that is involved in the rhythmic response of ejaculation. This is known as the spinal generator
Ejaculation
Response to activation of sensory neurons
Berkowitz A (2008). "Physiology and morphology of shared and specialized spinal interneurons for locomotion and scratching". Journal of Neurophysiology. 99 (6):
Scratch_reflex
Biological neural circuit that produces rhythmic outputs in the absence of rhythmic input
cardinal classes of spinal interneurons. The ventral neurons are considered to be members of the spinal CPG network. Each of these interneuron class can be further
Central_pattern_generator
Nerve cell sending impulse to muscle
lower motor neurons. Axons from upper motor neurons synapse onto interneurons in the spinal cord and occasionally directly onto lower motor neurons. The axons
Motor_neuron
Three columns of grey matter within the spinal cord
of the spinal cord. The anterior grey column is made up of alpha motor neurons, gamma motor neurons, and small neurons thought to be interneurons. It affects
Grey_columns
Part of an animal that coordinates actions and senses
output) to the same region of the spinal cord, others projecting into the brain. One target is a set of spinal interneurons that project to motor neurons
Nervous_system
Neural pathway which controls a reflex
extension of the lower leg. In invertebrates reflex interneurons do not necessarily reside in the spinal cord, for example as in the lateral giant neuron
Reflex_arc
Unexpected itching sensation
involving the interaction between low-threshold mechanoreceptors and spinal interneurons, to chemical pathways via the activation of the mechanosensitive
Alloknesis
American neuroscientist, academic and researcher
specific movements involving their muscle field. In contrast, spinal cord premotor interneurons had smaller muscle fields and were active through broader
Eberhard_Fetz
Protein-coding gene in the species Homo sapiens
transcription factor gene that is pivotal in interneuron differentiation in the ventral spinal cord. The spinal interneurons V0 and V1 are derived from progenitor
DBX1
(July 2008). "Petilla terminology: nomenclature of features of GABAergic interneurons of the cerebral cortex". Nature Reviews. Neuroscience. 9 (7): 557–568
List_of_human_cell_types
Theory about pain and the nervous system
two destinations in the spinal cord: transmission cells that carry the pain signal up to the brain, and inhibitory interneurons that impede transmission
Gate_control_theory
Loss of sensation and paralysis following a spinal cord injury
Spinal shock was first explored by Robert Whytt in 1750 as a loss of sensation accompanied by motor paralysis with initial loss but gradual recovery of
Spinal_shock
Axonal projections that exit a particular region
spindles (especially Ia fibers involved in the stretch reflex), spinal interneurons, and motor control centers such as the cerebellum and basal ganglia
Efferent_nerve_fiber
Region of the cerebral cortex involved in voluntary movement
percent of corticospinal axons. Many corticospinal terminals contact spinal interneurons, whereas direct cortico‑motoneuronal connections are thought to underlie
Motor_cortex
Part of the brain's frontal cortex
down the spinal cord to synapse onto the interneuron circuitry of the spinal cord and also directly onto the alpha motor neurons in the spinal cord which
Primary_motor_cortex
by the same spinal interneurons as those activating the motoneurons. NMDA receptors elicit voltage oscillations in regions of the spinal cord where locomotor
Neural substrate of locomotor central pattern generators in mammals
Neural_substrate_of_locomotor_central_pattern_generators_in_mammals
Muscular function
fibers that are sent through the dorsal root into the spinal cord to synapse on Ib inhibitory interneurons that in turn terminate directly on the motor neurons
Golgi_tendon_reflex
Layers of grey matter in the spinal cord
motor interneurons Lamina IX: hypaxial (body wall muscles), lateral (in limb regions) and medial (back muscles) motor neurons, also phrenic and spinal accessory
Rexed_laminae
Inhibitory interneurons found in the gray matter of the spinal cord
Renshaw cells are inhibitory interneurons found in the gray matter of the spinal cord, and are associated in two ways with an alpha motor neuron. They
Renshaw_cell
Sensory pathway from the skin to the thalamus
spinothalamic tract is a nerve tract in the anterolateral system in the spinal cord. This tract is an ascending sensory pathway to the thalamus. From the
Spinothalamic_tract
Monosynaptic reflex
signal which travels back to the spinal cord and synapses (without interneurons) at the level of L3 or L4 in the spinal cord, completely independent of
Patellar_reflex
Brain structure
descends the reticulospinal tract where it innervates motor neurons and spinal interneurons. It is the main auditory tract in the brainstem that connects the
Lateral_lemniscus
Sustained depolarized membrane states produced by regenerative ionic currents
standing or sitting. Brief commands from descending pathways or spinal interneurons can trigger plateau potentials in motoneurons, which then sustain
Plateau_potentials
nerve fibers travel up to the spinal cord where they cross the midline, go to the left side, and synapse on an interneuron. When the afferent nerve fibers
Escape_reflex
Network or circuit of neurons
The central pattern generators are made up of different groups of spinal interneurons. There are four principal types of neural circuits that are responsible
Neural_circuit
Developmental precursor to the central nervous system
precursor to the central nervous system, which is made up of the brain and spinal cord. The neural groove gradually deepens as the neural folds become elevated
Neural_tube
Pyramidal white matter motor pathway
the cerebral cortex that terminates on lower motor neurons and interneurons in the spinal cord, controlling movements of the limbs and trunk. There are
Corticospinal_tract
Large lower motor neurons of the brainstem and spinal cord
α-MNs is from local interneurons, which are the most numerous type of neuron in the spinal cord. Among their many roles, interneurons synapse on α-MNs to
Alpha_motor_neuron
Primary cell of the nervous system
contractions to glandular output. Interneurons connect neurons to other neurons within the same region of the brain or spinal cord. When multiple neurons are
Neuron
spinal cord cells, triggering the sympathetic nervous system and somatic motor responses, while emotions like fear further perpetuate the interneuron
Pain_theories
Neurons in the brain that carry signals to lower motor neurons
motor neuron synapses with the lower motor neuron or interneurons within the ventral horn of the spinal cord, each of whose axons innervate a fiber of skeletal
Upper_motor_neuron
Reduction or absence of bodily reflexes
appurtenant interneurons. Therefore, damage to lower motor neurons will subsequently result in hyporeflexia and/or areflexia. In spinal shock, which
Hyporeflexia
Type of synapse
with presynaptic inhibitory interneurons. These synapses are first studied using intracellular recordings from the spinal motoneurons in cats, and have
Axo-axonic_synapse
American academic
University of California, Los Angeles. She studies how the sensory interneurons in the spinal cord are first established during development and then connect
Samantha_Butler
Component of central nervous system (CNS)
spinal cord's grey matter. They carry sensory information such as touch, pressure, and pain from the body to the spinal cord and brain. Interneurons are
Spinal_neuron
Cranial nerve responsible for the face's senses and motor functions
information is processed and modified at each level in the chain by interneurons and input from other areas of the nervous system. For example, cells
Trigeminal_nerve
Neuron cluster in the spinal cord
Clarke) is a group of interneurons found in the medial part of Rexed lamina VII, also known as the intermediate zone, of the spinal cord. It is located
Posterior_thoracic_nucleus
Tricyclic antidepressant
effect by increasing gamma-aminobutyric acid transmission among spinal interneurons. The blocking effect of amitriptyline on sodium channels may also
Amitriptyline
Cell type with a single axon and many dendrites
motor neurons, and also interneurons (relay neurons), which are most commonly found in the cortex of the brain and the spinal cord. Peripherally, multipolar
Multipolar_neuron
Protein-coding gene in the species Homo sapiens, named for ketazocine
with allodynia. Mechanisms such as activation of NMDA receptors on spinal interneurons, and increasing glutamate and substance P release from primary afferent
Κ-opioid_receptor
Region of the brainstem regulating urinary reflexes
excitatory projections to spinally located parasympathetic neurons controlling the detrusor muscle of the bladder and inhibitory interneurons regulating Onuf's
Pontine_micturition_center
Central nervous system pathways
oblongata, and travel as part of the spinal cord until they synapse with interneurons in the grey column of the spinal cord. There is some variation in terminology
Pyramidal_tracts
Neural tract in the central nervous system
lateral funiculus of the spinal cord. Fibers run down the total length of the spinal cord and terminate at the interneurons of laminae VII and VIII. Additionally
Vestibulospinal_tract
mono-synaptic pathway. The medium-latency reflex (MLR) utilizes interneurons within the spinal cord and is typically ~80-90 ms. The long-latency reflex (LLR)
Cutaneous reflex in human locomotion
Cutaneous_reflex_in_human_locomotion
21021. PMID 18510446. S2CID 17491989. Prut, Y. & Fetz, E.E. Primate spinal interneurons show pre-movement instructed delay activity. (1999). Nature, 401
Premovement_neuronal_activity
Uncomfortable skin sensation
signal is transmitted from the skin into the spinal dorsal horn. In this area, a number of interneurons will either be inhibited or activated to promote
Itch
Operation of opposing sets of muscles
the actions of an inhibitor interneuron in the spinal cord. The afferent of the muscle spindle bifurcates in the spinal cord. One branch innervates the
Reciprocal_inhibition
Protein family
(December 2002). "Gamma protocadherins are required for survival of spinal interneurons". Neuron. 36 (5): 843–54. doi:10.1016/s0896-6273(02)01090-5. PMID 12467588
Protocadherin
Chemical compound
administration of acromelic acid A in rats results in selective loss of interneurons in the lower spinal cord, without causing neuronal damage in the hippocampus and
Acromelic_acid_A
Extremely potent neurotoxin
travel through the axon to the spinal neurons. The next step, transcytosis from the axon into the CNS inhibitory interneuron, is one of the least understood
Tetanus_toxin
Muscle of the forearm
through the dorsal horn and up the posterior column of the spinal cord. It synapses with an interneuron in the gracile nucleus. It then decussates in the medial
Pronator_quadratus_muscle
Feeling of pain from stimuli which do not normally elicit pain
damage including spinal cord injury. Mechanoreceptors can influence the output of nociceptors by making connections with the same interneurons, the activation
Allodynia
Spinal reflex
to the central nervous system. The sensory neuron then synapses with interneurons that connect to motor neurons. Some of these send motor impulses to the
Withdrawal_reflex
Biological model of 2 or more cell types
assembloids model interneuron migration into the cerebral cortex. Cortico-motor assembloids can reconstitute aspects of the cortico-spinal-muscle circuit
Assembloid
Brain and spinal cord neural tract
longitudinal fasciculus. In the spinal cord, it descends in the anterior funiculus. It terminates by synapsing with interneurons of the intermediate zone and
Tectospinal_tract
types of the basal plate include lower motor neurons and four types of interneuron. Initially, the left and right sides of the basal plate are continuous
Basal_plate_(neural_tube)
Intermediate cutaneous nerve Internal carotid plexus Internal laryngeal nerve Interneuron Jugular ganglion Lacrimal nerve Lateral cord Lateral cutaneous nerve
List of nerves of the human body
List_of_nerves_of_the_human_body
Spinal locomotion results from intricate dynamic interactions between a central program in lower thoracolumbar spine and proprioceptive feedback from body
Spinal_locomotion
Axons that connect cortical areas within the same cerebral hemisphere
is a non-invasive method to study the course of association fibers. Interneuron Tractography Standring, Susan (2005). Gray's Anatomy: The Anatomical
Association_fiber
Structure of the brain stem
involved in this regulation. The pre-Bötzinger complex is a cluster of interneurons involved in the respiratory function of the medulla. Cardiovascular center
Medulla_oblongata
Critical protein in embryonic development
differentiation of motor neuron and ventral interneurons. On the other hand, mice mutants for SHH lack ventral spinal cord characteristics. In vitro blocking
Sonic_hedgehog_protein
Cluster of interneurons in the medulla oblongata
preBötC is part of the ventral respiratory group of respiratory related interneurons. Its foremost function is to generate the inspiratory breathing rhythm
Pre-Bötzinger_complex
interneurons in the substantia gelatinosa of Rolando (lamina II), and lamina III of the posterior grey column of the spinal cord. These interneurons then
Spinoreticular_tract
Central organ of the human nervous system
the medullary pyramids. These then travel down the spinal cord, with most connecting to interneurons, in turn connecting to lower motor neurons within
Human_brain
Part of the peripheral nervous system
motor nerves. 31 segments of nerves are in the spinal cord and 12 are in the brain stem. Interneurons, also known as association neurons, are present
Somatic_nervous_system
Main component of the nervous system
glands) Interneurons: Cells that form connections between neurons and whose processes are limited to a single local area in the brain or spinal cord Structural
Nervous_tissue
they become spinal nerves. The gray matter, in the center of the cord, is shaped like a butterfly and consists of cell bodies of interneurons and motor
Neuromere
spinal cord reflex arc. In the spinal cord reflex pathway the afferent neuron transmits information to spinal cord interneurons. These interneurons act
Axon_reflex
Areas of neuronal cell bodies in the brain
in the spinal cord consists of interneurons, as well as the cell bodies of projection neurons. Cross-section of a spinal vertebra with the spinal cord in
Grey_matter
In neuroscience, Golgi cells are the most abundant inhibitory interneurons found within the granular layer of the cerebellum. Golgi cells can be found
Golgi_cell
Overview of and topical guide to the human nervous system
Somatosensory system Vestibular system Olfactory system Taste Pain Neuron Interneuron Ganglion (PNS) vs Nucleus (neuroanatomy) (CNS) except basal ganglia (CNS)
Outline of the human nervous system
Outline_of_the_human_nervous_system
Hypothalamic nucleus
the posterior pituitary, the median eminence as well as the brainstem and spinal cord. Neurons which project to the posterior pituitary secrete oxytocin
Paraventricular_nucleus
cervical myelopathy and traumatic spinal cord injury. Dr. Fehlings' work demonstrating that midcervical excitatory interneurons are essential for the maintenance
Michael_Fehlings
WDR neurons are found in the posterior grey column of the spinal cord. This area of the spinal cord houses two different types of neurons involved in the
Wide_dynamic_range_neuron
Physiological reflex
side of the body to the contralateral side of the spinal cord. There, they synapse with interneurons, which, in turn, excite or inhibit alpha motor neurons
Crossed_extensor_reflex
Structures of the brain
cortices. In the cortex, PNNs are associated mostly with inhibitory interneurons and are thought to be responsible for maintaining the excitatory/inhibitory
Perineuronal_net
first-order nerve fiber → interneurons of lamina II (substantia gelatinosa) and lamina III of the posterior grey column of the spinal cord → second-order neurons
Raphespinal_tract
neurons which project to inhibitory interneurons of the substantia gelatinosa of the posterior grey column in the spinal cord. It thus complements the classical
Dorsolateral pontine reticular formation
Dorsolateral_pontine_reticular_formation
Automatic, involuntary response to a stimulus
effect of sensory input upon motor neurons is also influenced by interneurons in the spinal cord or ventral nerve cord and by descending signals from the
Reflex
and premotor interneurons, including central pattern generators. But how exactly descending signals are integrated in circuits in the spinal cord (vertebrates)
Descending_neuron
Structure of the invertebrate central nervous system
potentials, some neural information is transmitted via non-spiking interneurons. These interneurons filter, amplify, and integrate internal and external neural
Ventral_nerve_cord
Group of growth factor proteins
secretion of BMPs by the roof plate in the developing spinal cord helps to specify dorsal sensory interneurons. As a member of the transforming growth factor-beta
Bone_morphogenetic_protein
Sensory neuron that detects pain
potentially damaging stimuli by sending "possible threat" signals to the spinal cord and the brain. The brain creates the sensation of pain to direct attention
Nociceptor
Cluster of nuclei in the brain stem
enkephalinergic and dynorphin-containing interneurons of the substantia gelatinosa of the posterior grey column of the spinal cord. This neural path thus mediates
Nucleus_raphe_magnus
Spinal trigeminal nucleus
[clarification needed] The lateral RF is known for its ganglions and areas of interneurons around the cranial nerves, which serve to mediate their characteristic
Reticular_formation
Non-dividing precursor cell to a neuron
brain injuries. However, they are restricted to the subtype of small interneuron-like cells, and it is unlikely that they contribute to functional recovery
Neuroblast
Proprioceptive sensory receptor organ
responses which control muscle contraction. Ib afferents synapse with interneurons in the spinal cord that also project to the brain cerebellum and cerebral cortex
Golgi_tendon_organ
Innervated muscle structure involved in reflex actions and proprioception
afferent signal is also transmitted polysynaptically through interneurons (Ia inhibitory interneurons), which inhibit alpha motorneurons of antagonist muscles
Muscle_spindle
Nerve tracts in the brainstem
control, head posture, and vertical eye movement. The MLF interconnects interneurons of each abducens nucleus with motor neurons of the contralateral oculomotor
Medial longitudinal fasciculus
Medial_longitudinal_fasciculus
Vital part of the nervous system controlling the gastrointestinal tract
and mechanoreceptors, that are used to provide sensory input to the interneurons in the enteric nervous system. The plexus is the parasympathetic nucleus
Enteric_nervous_system
Dog behaviour
funiculus. Fibres of the rubrospinal tract then terminate on interneurons at all levels of the spinal cord. The right hemisphere of the brain controls withdrawal
Tail_wagging_by_dogs
Protein-coding gene in mammals
Martyn (2001-02-01). "Evx1 Is a Postmitotic Determinant of V0 Interneuron Identity in the Spinal Cord". Neuron. 29 (2): 385–399. doi:10.1016/S0896-6273(01)00213-6
Evx1
Axonal projections that arrive at a particular brain region
This process is carried out through the activity of sensory neurons, interneurons, and motor neurons. A touch or painful stimulus, for example, creates
Afferent_nerve_fiber
Medical treatment
transmit excitatory impulses to higher-order neurons and inhibitory interneurons, which communicate with neighboring relay neurons. Thus, neurons encircling
Neurotherapy
Medical therapy for incontinence and constipation
control theory of pain, specifically via gating mechanisms of interneurons in the spinal cord's dorsal horn. Nonnociceptive stimuli (non-painful sensations)
Sacral_nerve_stimulation
Structure at the rear of the vertebrate brain, beneath the cerebrum
layer of the cerebellar cortex also contains two types of inhibitory interneuron: stellate cells and basket cells. Both stellate and basket cells form
Cerebellum
SPINAL INTERNEURON
SPINAL INTERNEURON
Boy/Male
Arabic, Muslim
White Gold
Girl/Female
Hindu
God of child
Female
Turkish
Turkish name PINAR means "spring."
Girl/Female
Hindu, Indian, Marathi
Pleased; Satisfied
Surname or Lastname
English
English : perhaps a metonymic occupational name for a spindle maker, from Middle English spindle, spindel (Old English spinel).Americanized spelling of German and Jewish Spindel.
Girl/Female
Hindu
Surname or Lastname
English, German, and Jewish (Ashkenazic)
English, German, and Jewish (Ashkenazic) : occupational name for a spindle maker, from an agent derivative of Middle English spindle, Middle High German spindel, German Spindel, Yiddish shpindl ‘spindle’, ‘distaff’.
Boy/Male
Indian
Girl/Female
Hindu
To remember, Precious, Lovable person
Boy/Male
Hindu
Lord Vishnu
Boy/Male
Biblical
Father of changing.
Surname or Lastname
English
English : patronymic from Spink.
Boy/Male
Biblical
Watch of him that sleeps.
Boy/Male
Gujarati, Hindu, Indian
God of Children
Girl/Female
Hindu
Having peace, Cool
Surname or Lastname
English
English : reduced form of Aspinwall.
Boy/Male
Hindu
Fiery, Energetic, Powerful, Vigorous
Female
Hebrew
(סִיגָל) Hebrew name SIGAL means "treasure."
Girl/Female
Hindu, Indian, Sanskrit
Always Smile
Girl/Female
Hindu
Wife of Lord Shiva, Goddess Parvati (Wife of Lord Shiva)
SPINAL INTERNEURON
SPINAL INTERNEURON
Girl/Female
Australian, Danish, Swedish
God's Promise; God is My Oath
Girl/Female
Arabic, Muslim, Pashtun
Dear One
Girl/Female
Tamil
Earth
Boy/Male
American, Australian, Chinese
Friends; Forever Smiling; Allies; A Native American Tribal Name
Surname or Lastname
English (mainly Dorset and Hampshire)
English (mainly Dorset and Hampshire) : unexplained; perhaps a variant of Curley.
Boy/Male
Hindu, Indian
Moonlight; Moonbeam
Boy/Male
English American German
Cuts the nap of woolen cloth. 'Shireman' In medieval times the shireman served as governor-judge...
Boy/Male
Tamil
Worthy of praise, Victorious
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Lord Shiva
Boy/Male
American, Arabic, Chinese, Christian, Greek, Hawaiian, Hebrew, Muslim
Beautyful; Sweet; Smart; Loving
SPINAL INTERNEURON
SPINAL INTERNEURON
SPINAL INTERNEURON
SPINAL INTERNEURON
SPINAL INTERNEURON
a.
Noticeable; distinguished from what is ordinary; eminent; remarkable; memorable; as, a signal exploit; a signal service; a signal act of benevolence.
v. t.
To notify by a signals; to make a signal or signals to; as, to signal a fleet to anchor.
a.
Producing spines; bearing thorns or spines; thorny; spiny.
a.
Of or pertaining to the central nervous system consisting of the brain and spinal cord.
a.
Furnished with spines; spiny.
n.
See Spinny.
n.
A kind of ruby. See Spinel.
a.
Full of spines; thorny; as, a spiny tree.
n.
A kind of spiral curve found in certain univalve shells.
n.
A minute spine.
a.
Of or pertaining to a spiral; like a spiral.
a.
Anything which has a spiral form, as a spiral shell.
n.
A long and slender stalk resembling a spindle.
n.
A spinny.
a.
Bearing a spine; spiniform.
n.
Alt. of Spinage
a.
Of or pertaining to a spine or spines.
pl.
of Spica
a.
Winding or circling round a center or pole and gradually receding from it; as, the spiral curve of a watch spring.