Professor Rounds LSU NEUROLOGY
... 3 weeks prior to admission, yet according to family members, these symptoms had begun to develop 2 months prior. Weakness developed in both extremities simultaneously and is not ascending in nature. There is also weakness in the upper extremities bilaterally, specifically the shoulders, which began ...
... 3 weeks prior to admission, yet according to family members, these symptoms had begun to develop 2 months prior. Weakness developed in both extremities simultaneously and is not ascending in nature. There is also weakness in the upper extremities bilaterally, specifically the shoulders, which began ...
Ultrastructure and Function of Cephalopod Chromatophores
... on the muscle membrane? It was also necessary to find out if the chromatophores, or at least their muscle fibers, form a syncytium. Finally, an explanation had to be found' for the fact that nervous stimulation could independently activate individual muscle fibers, while the spontaneously arising co ...
... on the muscle membrane? It was also necessary to find out if the chromatophores, or at least their muscle fibers, form a syncytium. Finally, an explanation had to be found' for the fact that nervous stimulation could independently activate individual muscle fibers, while the spontaneously arising co ...
Spinal Cord Motor Activity
... endings located at the junction of the muscle and tendon. Each tendon organ is related to a single group Ib sensory axon (the Ib axons are slightly smaller than the Ia axons that innervate the muscle spindles). In contrast to the parallel arrangement of extrafusal muscle fibers and spindles, Golgi t ...
... endings located at the junction of the muscle and tendon. Each tendon organ is related to a single group Ib sensory axon (the Ib axons are slightly smaller than the Ia axons that innervate the muscle spindles). In contrast to the parallel arrangement of extrafusal muscle fibers and spindles, Golgi t ...
Reflexes - Sinoe Medical Association
... •Hold baby prone while supporting belly with hand •Stroke along one side of babies' spine •Baby flexes whole body toward the stroked side Crawling Reflex Newborn placed on abdomen •Newborn •Baby flexes legs under him and starts to crawl ...
... •Hold baby prone while supporting belly with hand •Stroke along one side of babies' spine •Baby flexes whole body toward the stroked side Crawling Reflex Newborn placed on abdomen •Newborn •Baby flexes legs under him and starts to crawl ...
Chapter 13: Peripheral Nervous System
... Tiny meningeal branch Rami communicantes at the base of the ventral rami in the thoracic region ...
... Tiny meningeal branch Rami communicantes at the base of the ventral rami in the thoracic region ...
Short- and Long-Term Changes in Joint Co
... synergy between the two hypothetical mechanisms. Previously observed decreases in electromyogram (EMG) might have other explanations, such as trajectory modifications that reduce joint torques. To circumvent such complications, we required strict trajectory control and examined only successful trial ...
... synergy between the two hypothetical mechanisms. Previously observed decreases in electromyogram (EMG) might have other explanations, such as trajectory modifications that reduce joint torques. To circumvent such complications, we required strict trajectory control and examined only successful trial ...
Principles of Electrical Currents
... causing a thermal effect. AC has a zero net charge (ZNC). The DC may have long term adverse physiological effects) ...
... causing a thermal effect. AC has a zero net charge (ZNC). The DC may have long term adverse physiological effects) ...
4-stretch reflex
... -One of the most important functions of the muscle spindle system is to stabilize body position during tense motor action and during walking and running - the bulboreticular facilitatory region transmit excitatory signals through the gamma nerve fibers to the intrafusal muscle fibers of the muscle ...
... -One of the most important functions of the muscle spindle system is to stabilize body position during tense motor action and during walking and running - the bulboreticular facilitatory region transmit excitatory signals through the gamma nerve fibers to the intrafusal muscle fibers of the muscle ...
The effects of reflex path length on clonus frequency in spastic
... SUMMARY Clinical evaluation of clonus in spastic muscles was performed by comparing reflex path length with clonus frequency for different muscles in the same patient. It was found that clonus frequency varied inversely with reflex path length (r = 0-84, p < 0-001). The findings confirm that clonus ...
... SUMMARY Clinical evaluation of clonus in spastic muscles was performed by comparing reflex path length with clonus frequency for different muscles in the same patient. It was found that clonus frequency varied inversely with reflex path length (r = 0-84, p < 0-001). The findings confirm that clonus ...
Peripheral Nervous System
... acetylcholinesterase, an enzyme that immediately breaks down acetylcholine to prevent further stimulation of muscle twitch. The motor unit signal causes an overall contraction of the muscle. The finer the motor movement the more motor neurons and each innervates less muscular fibers. B. Innervation ...
... acetylcholinesterase, an enzyme that immediately breaks down acetylcholine to prevent further stimulation of muscle twitch. The motor unit signal causes an overall contraction of the muscle. The finer the motor movement the more motor neurons and each innervates less muscular fibers. B. Innervation ...
Motor Unit Number Est.
... Spike-triggered averaging relies on the ability to isolate single motor unit potentials by voluntary activation on needle EMG on a two-channel EMG machine.4 In this method, intramuscular motor unit potentials are measured with any one of several electrodes, including single-fiber EMG, bipolar concen ...
... Spike-triggered averaging relies on the ability to isolate single motor unit potentials by voluntary activation on needle EMG on a two-channel EMG machine.4 In this method, intramuscular motor unit potentials are measured with any one of several electrodes, including single-fiber EMG, bipolar concen ...
Read the Full Article
... hearing loss to high blood pressure to medications, diagnosing the cause or causes can be a challenge. For many people, the ringing begins for no obvious reason. The unique cause of otic (ear) sympto ...
... hearing loss to high blood pressure to medications, diagnosing the cause or causes can be a challenge. For many people, the ringing begins for no obvious reason. The unique cause of otic (ear) sympto ...
Smooth Muscle - OpenStax CNX
... muscle have latch-bridges, cross-bridges that cycle slowly without the need for ATP; these muscles can maintain low-level contractions for long periods. Single-unit smooth muscle tissue contains gap junctions to synchronize membrane depolarization and contractions so that the muscle contracts as a s ...
... muscle have latch-bridges, cross-bridges that cycle slowly without the need for ATP; these muscles can maintain low-level contractions for long periods. Single-unit smooth muscle tissue contains gap junctions to synchronize membrane depolarization and contractions so that the muscle contracts as a s ...
Skeletal Muscle Mechanics
... 2. What are the two methods a muscle can use to increase its strength of contraction? 3. What are the active, passive, and total tension curves? 4. In what order are motor units added in muscle contraction? ...
... 2. What are the two methods a muscle can use to increase its strength of contraction? 3. What are the active, passive, and total tension curves? 4. In what order are motor units added in muscle contraction? ...
cranial nerve ix: glossopharyngeal nerve
... 1. In this role, the Vagus is "stealing" some of the innervation from the Spinal Accessory (XI). Hence in this case the Vagus is actually innervating striated rather than smooth muscle. 2. VISCERAL MOTOR (GVE): Parasympathetics to the Thoracic and Abdominal viscera. 1. The Vagus serves no Parasympat ...
... 1. In this role, the Vagus is "stealing" some of the innervation from the Spinal Accessory (XI). Hence in this case the Vagus is actually innervating striated rather than smooth muscle. 2. VISCERAL MOTOR (GVE): Parasympathetics to the Thoracic and Abdominal viscera. 1. The Vagus serves no Parasympat ...
cranial nerves
... canal and rubbing them together softly. Glossopharyngeal Nerve (CN IX) receives sensory fibers from oropharynx and special sensory fibers of taste from the posterior one-third of the tongue; sends motor fibers to palate and is responsible for gag reflex. Vagus Nerve (CN X) sends motor fibers to pala ...
... canal and rubbing them together softly. Glossopharyngeal Nerve (CN IX) receives sensory fibers from oropharynx and special sensory fibers of taste from the posterior one-third of the tongue; sends motor fibers to palate and is responsible for gag reflex. Vagus Nerve (CN X) sends motor fibers to pala ...
enhancing nerve regeneration with a natural, tissue
... peripheral nerve injury, though larger studies are needed to definitively prove this. Future studies will continue evaluating functional recovery by employing more direct methods of measuring muscle function such as biomechanical gait analysis. Studies will also involve longer time points in order t ...
... peripheral nerve injury, though larger studies are needed to definitively prove this. Future studies will continue evaluating functional recovery by employing more direct methods of measuring muscle function such as biomechanical gait analysis. Studies will also involve longer time points in order t ...
Nat Methods 6:219-224 - University of British Columbia
... (0.22 mm2 or about 0.5 mm in diameter; Supplementary Fig. 5). These measurements suggest relative differences between ICMS and LBM activation areas; however, the use of IOS activation area to determine exactly what fraction of output neurons are activated with a single light pulse may be complicated ...
... (0.22 mm2 or about 0.5 mm in diameter; Supplementary Fig. 5). These measurements suggest relative differences between ICMS and LBM activation areas; however, the use of IOS activation area to determine exactly what fraction of output neurons are activated with a single light pulse may be complicated ...
Myotatic Reflex
... receptors in muscle spindles are simultaneously excited, triggering a volley of action potentials in IA afferent axons. Within the CNS, the axons activate excitatory synapses on alpha motor neurons that innervate the muscle that was stretched. Also, alpha motor neurons to antagonistic muscles are in ...
... receptors in muscle spindles are simultaneously excited, triggering a volley of action potentials in IA afferent axons. Within the CNS, the axons activate excitatory synapses on alpha motor neurons that innervate the muscle that was stretched. Also, alpha motor neurons to antagonistic muscles are in ...
Variations in Muscle Tone - Down Syndrome of Louisville
... also helps the muscles more smoothly and voluntarily. Muscle tone is monitored and controlled by the brain. The brain uses information from the muscles, from other parts of the body, and from what is happening in the environment to automatically adjust tone. Damage to the brain sometimes alters musc ...
... also helps the muscles more smoothly and voluntarily. Muscle tone is monitored and controlled by the brain. The brain uses information from the muscles, from other parts of the body, and from what is happening in the environment to automatically adjust tone. Damage to the brain sometimes alters musc ...
Introduction to Physiology: The Cell and General Physiology
... • Myoplasmic Ca2+ falls (initiating relaxation) before development of maximal contractile force • If the muscle is stimulated before complete relaxation has occurred the new twitch will sum with the previous one etc. • If action potential frequency is sufficiently high, the individual contractions a ...
... • Myoplasmic Ca2+ falls (initiating relaxation) before development of maximal contractile force • If the muscle is stimulated before complete relaxation has occurred the new twitch will sum with the previous one etc. • If action potential frequency is sufficiently high, the individual contractions a ...
The kinaesthetic senses
... result emphasises the powerful influence exerted by muscle history effects on position sense. Only muscle spindles would be expected to show such behaviour, dramatically altering their signalling properties as a result of a muscle contraction. Studies using other techniques such as skin and joint an ...
... result emphasises the powerful influence exerted by muscle history effects on position sense. Only muscle spindles would be expected to show such behaviour, dramatically altering their signalling properties as a result of a muscle contraction. Studies using other techniques such as skin and joint an ...
powerpoint lecture
... • Maintains muscle tone in large postural muscles, and adjusts it reflexively – Causes muscle contraction in response to increased muscle length (stretch) ...
... • Maintains muscle tone in large postural muscles, and adjusts it reflexively – Causes muscle contraction in response to increased muscle length (stretch) ...
Electromyography
Electromyography (EMG) is an electrodiagnostic medicine technique for evaluating and recording the electrical activity produced by skeletal muscles. EMG is performed using an instrument called an electromyograph, to produce a record called an electromyogram. An electromyograph detects the electrical potential generated by muscle cells when these cells are electrically or neurologically activated. The signals can be analyzed to detect medical abnormalities, activation level, or recruitment order, or to analyze the biomechanics of human or animal movement.