Definitions

1. The reticular formation is a group of loosely distributed neurons in the medulla, pons and mesencephalon. (Web site)
2. The reticular formation is a part of the brain which is involved in stereotypical actions, such as walking, sleeping, and lying down. (Web site)
3. The reticular formation is a region running through the middle of the hindbrain (and on into the midbrain).
4. The reticular formation is a poorly-differentiated area of the brain stem, centered roughly in the pons.
5. The reticular formation is implicated in the maintenance of sleep-wake cycles and activates the higher centres. (Web site)

Term Reticular Formation

1. The word "reticular" means "net like," so the term reticular formation describes the structural appearance of this tissue.

Epilepsy

1. Epilepsy and the reticular formation.

Part

1. The Thalamus contains part of the reticular formation (see below). (Web site)

Network

1. The reticular formation - a network of nerves running through the brain stem and the thalamus. (Web site)

Cortex

1. Note that many ascending somatosensory pathways include synapses in either the thalamus or the reticular formation before they reach the cortex. (Web site)

Limbic System

1. The limbic system is connected to the autonomic control functions of the brainstem reticular formation by the medial forebrain bundle.

Consciousness

1. Reticular formation connect the thalami with major nerves in spinal cord hence acts as gatekeeper to consciousness. (Web site)

Motor Function

1. The reticular formation in the pontine tegmentum contains multiple cell groups that exert facilitating influences upon motor function.

Signals

1. CENTRAL PATTERN GENERATOR (CPG): In the brain stem (Reticular Formation), it mediates the signals that are necessary for locomotion (walking and running).

Hypothalamus

1. Furthermore, single-shock stimulation of the sciatic nerve also activated the medial reticular formation, hypothalamus, and thalamus. (Web site)
2. These parts include the hypothalamus, nucleus of the solitary tract, reticular formation, amygdala, hippocampus, and olfactory cortex.

Rem Sleep

1. REM sleep could be triggered by cholinergic stimulation of the reticular formation. (Web site)

Neurons

1. Neurons of the reticular formation receive specific sensory input from the skin, muscles, joints, and vestibular system which they then integrate. (Web site)
2. Additionally, the neurons that manufacture serotonin, the raphe nuclei, form a ridge or seam in the middle of the reticular formation.
3. The neurons of the lateral reticular formation are very important for reflexes and the mediation of posture. (Web site)

Superior Colliculus

1. In the adult brain, the midbrain consists of brain structures such as the superior colliculus, the inferior colliculus, and parts of the reticular formation.

Fibers

1. L. restis - rope; forma - form reticular The reticular formation is a netlike system of fibers and cells in the brain stem.
2. Within the brain stem lies a mass of nerve cells and fibers called the reticular formation.
3. It contains large cells of the reticular formation and fibers which probably subserve a variety of functions.

Substantia Nigra

1. Other efferents from the nucleus accumbens include connections with the substantia nigra and pontine reticular formation.

Locus Coeruleus

1. The involved structures are the reticular formation, and the locus coeruleus, a concentrated mass of nor-epinephrine secreting neurons. (Web site)
2. By contrast, lesions of the pontine reticular formation (with sparing of the locus coeruleus) abolishes muscle atonia (Hendricks, et al. (Web site)

Coma

1. Damage to the reticular formation can result in a coma. (Web site)
2. Damage to the reticular formation can produce a permanent state of coma. (Web site)
3. The underlying cause of coma is bilateral damage to the Reticular formation of the midbrain, which is important in regulating sleep. (Web site)

Red Nucleus

1. It consists of the cerebral aqueduct, periaqueductal gray, reticular formation, substantia nigra and the red nucleus. (Web site)
2. It affects the muscles indirectly through its connection with basal ganglia, reticular formation, red nucleus and vestibular nucleus.

Collaterals

1. Intralaminar Nuclei Input - receives information from the basal ganglia, the reticular formation, and collaterals from major afferent tracts.
2. Many collaterals from the reticular formation and from the pyramids enter the inferior olivary nucleus. (Web site)

Nerve Fibres

1. A network of nerve fibres called the reticular formation lies deep within the brain stem. (Web site)

Brain

1. The reticular formation connects with all parts of the brain and brain stem. (Web site)
2. Reticular formation As the brain's sentry, this structure receives incoming stimuli and puts the brain on alert, ready to respond. (Web site)

Tracts

1. Several nuclei, tracts and the reticular formation are contained here. (Web site)

Nuclei

1. Nuclei directly involved in function of the reticular activating system are of course located in the reticular formation.

Caudal Portion

1. In contrast, lesioning of the more caudal portion of the reticular formation produces insomnia in cats. (Web site)

Cerebral Cortex

1. It receives nerve fibres from the cerebral cortex, vestibular nuclei, globus pallidus, superior colliculus, reticular formation, and spinothalamic tract.
2. They originate from the cerebral cortex when it is not being activated by the reticular formation.

Cerebellum

1. It acts at many sites, including the reticular formation, spinal cord, cerebellum and cerebral cortex, and on many neurotransmitter systems.
2. The reticular formation contains a core collection of cells of various sizes that project to the thalamus, the cerebellum, and the spinal cord.

Hindbrain

1. The hindbrain also contains two important coordinating or integrating systems: the cerebellum and the reticular formation. (Web site)

Sleeping

1. The signals sent to the cerebral cortex that helps in attending stimulation and remain alert while sleeping is taken care of by the reticular formation. (Web site)

Sleep

1. The reticular formation regulates consciousness, sleep, and wakefulness. (Web site)
2. The reticular formation also is involved in sleep, wakefulness, and attention. (Web site)
3. The reticular formation controls respiration, cardiovascular function (see Heart), digestion, levels of alertness, and patterns of sleep. (Web site)

Mesencephalon

1. It also sends information to the mesencephalon and the reticular formation of the brainstem.

Tectum

1. Sends contralateral ascending projections to the reticular formation, tectum, and thalamus (medial, intralaminar, and VPM nuclei). (Web site)
2. Pathways are always named beginning-to-end, so these originate in the vestibular nuclei, tectum (superior colliculi), and reticular formation, respectively.

Thalamus

1. The reticular formation receives sensory information through various pathways and has axonal connections to the cerebral cortex, thalamus, and spinal cord. (Web site)
2. In the brain it has extensive afferent inputs to many different areas such as the reticular formation, thalamus, limbic system and the neocortex.
3. Finally, some fibers are sent to the intralaminar (IL) nuclei of the thalamus via the reticular formation.

Arousal

1. The reticular formation is involved in sleep and arousal. (Web site)
2. It is via these nuclei that the reticular formation can exert widespread influences on motor and sensory functioning as well as arousal. (Web site)
3. Without arousal from the reticular formation, the cortex remains unaware of its surroundings. (Web site)

Central Core

1. A central core of neurons, the reticular formation, contains control centers for the heartbeat and respiration. (Web site)

Brainstem

1. After entering the cord these fibers stimulate lateral spinothalamic tract neurons which send collaterals into the brainstem reticular formation. (Web site)
2. Some fibers of this tract don't enter the thalamus but end instead in the brainstem reticular formation. (Web site)
3. They receive projections from the brainstem reticular formation: periventricular and periaqueductal gray and nucleus raphe magnus. (Web site)

Medulla Oblongata

1. The parasympathetic preganglionic neurons that regulate these functions originate in the reticular formation of the medulla oblongata.

Pons

1. The central core consists of the thalamus, pons, cerebellum, reticular formation and medulla. (Web site)
2. Sympathetic outflow is initiated from the reticular formation of the medulla oblongata, pons, and certain areas or the hypothalamus. (Web site)
3. The pons is involved in motor control, sensory analysis, and levels of consciousness and sleep (reticular formation). (Web site)

Midbrain

1. The midbrain reticular formation sends projections to the hypothalamus, while paramedian reticular nuclei project mainly to the cerebellum. (Web site)
2. Activity of midbrain reticular formation and neocortex during the progression of human non-rapid eye movement sleep. (Web site)
3. The source of these activating impulses is the reticular formation of the brainstem (ie, medulla, pons and midbrain). (Web site)

Brain Stem

1. The central core of the brain stem is the reticular formation, which can affect the excitability of neurons and thereby govern states of arousal.
2. Part of the reticular formation, which controls the levels of consciousness and sleep, also resides in this part of the brain stem.
3. The reticular formation (the central core of the brain stem) controls consciousness, eating and sleeping patterns, drowsiness and attention.

Reticular Formation

1. Running up the brain stem from the medulla oblongata through the pons and the midbrain is a netlike formation of nuclei known as the reticular formation.
2. Structures within the brain stem include the medulla, pons, tectum, reticular formation and tegmentum. (Web site)
3. The midbrain, pons, medulla oblongata and reticular formation are all part of the brain stem.

Categories

1. Medicine > Anatomy > Brain > Brain Stem
2. Midbrain
3. Pons
4. Medulla Oblongata
5. Tegmentum
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