The document discusses electrodiagnostic tests like electromyography (EMG), nerve conduction velocity (NCV) tests, and evoked potentials (EP) which are used to study the nervous system. EMG involves inserting needle electrodes into muscles to record electrical activity, NCV tests how quickly electrical signals move through nerves, and EP stimulates nerves or parts of the body to measure response in the brain. Together these tests can provide information about nerve and muscle injuries, diseases, and help guide treatment.
A type of manual therapy in which the muscle or the joint is altered and placed in a position of comfort for certain duration after which the pain disappears completely or gets reduced. this slide show explains about the principles, mechanism and Phases of PRT
Brian Mulligan described novel concept of the simultaneous application of therapist applied accessory mobilizations and patient generated active movements
This is the presentation which was delivered to third year Bachelor of Physiotherapy students at Kathmandu University School of Medical Sciences (KUSMS), Dhulikhel, Nepal. Different schools of thoughts in manual therapy are the part of curriculum for the undergraduate students at KUSMS.
A type of manual therapy in which the muscle or the joint is altered and placed in a position of comfort for certain duration after which the pain disappears completely or gets reduced. this slide show explains about the principles, mechanism and Phases of PRT
Brian Mulligan described novel concept of the simultaneous application of therapist applied accessory mobilizations and patient generated active movements
This is the presentation which was delivered to third year Bachelor of Physiotherapy students at Kathmandu University School of Medical Sciences (KUSMS), Dhulikhel, Nepal. Different schools of thoughts in manual therapy are the part of curriculum for the undergraduate students at KUSMS.
Neurodynamics, mobilization of nervous system, neural mobilizationSaurab Sharma
This is the presentation which was delivered to third year Bachelor of Physiotherapy students at Kathmandu University School of Medical Sciences (KUSMS), Dhulikhel, Nepal. Different schools of thoughts in manual therapy are the part of curriculum for the undergraduate students at KUSMS.
Concept given by Shacklock (modern concept) and Butler (old concept), a method of assessment as well as treatment of peripheral neurological system by physiotherapists.
Part-I: The current slideshow: theoretical aspect of neurodynamics.
Part-II: Assessment of peripheral nervous system on the basis of neurodynamic concepts: Date: 01/04/2020
Part-III: treatment part: Date: 03/04/2020
Part-IV: Self neurodynamics: 05/04/2020
Late response are the most helpful findings in some of the diseases affecting the peripheral nerves, (e.g GBS, Radiculopathies, ). How to assess these responses while performing Nerve Conduction Studies, is the most technical and theoretical consideration.... Here we go with the same things in the stated slides
This is the presentation which was delivered to third year Bachelor of Physiotherapy students at Kathmandu University School of Medical Sciences (KUSMS), Dhulikhel, Nepal. Different schools of thoughts in manual therapy are the part of curriculum for the undergraduate students at KUSMS.
Neurodynamics, mobilization of nervous system, neural mobilizationSaurab Sharma
This is the presentation which was delivered to third year Bachelor of Physiotherapy students at Kathmandu University School of Medical Sciences (KUSMS), Dhulikhel, Nepal. Different schools of thoughts in manual therapy are the part of curriculum for the undergraduate students at KUSMS.
Concept given by Shacklock (modern concept) and Butler (old concept), a method of assessment as well as treatment of peripheral neurological system by physiotherapists.
Part-I: The current slideshow: theoretical aspect of neurodynamics.
Part-II: Assessment of peripheral nervous system on the basis of neurodynamic concepts: Date: 01/04/2020
Part-III: treatment part: Date: 03/04/2020
Part-IV: Self neurodynamics: 05/04/2020
Late response are the most helpful findings in some of the diseases affecting the peripheral nerves, (e.g GBS, Radiculopathies, ). How to assess these responses while performing Nerve Conduction Studies, is the most technical and theoretical consideration.... Here we go with the same things in the stated slides
This is the presentation which was delivered to third year Bachelor of Physiotherapy students at Kathmandu University School of Medical Sciences (KUSMS), Dhulikhel, Nepal. Different schools of thoughts in manual therapy are the part of curriculum for the undergraduate students at KUSMS.
This paper will review the works on Surface Electromyography (SEMG) signal acquisition and controlling as well as the uses of SEMG signals analysis for Transfemoral amputee's people. In the beginning, this paper will briefly go through the basic theory of myoelectric signal generation. Next, the signal acquisition & filtering techniques applied for SEMG signal will be explained. Then after this EMG signal control or actuate the myoelectric leg who was suffering from Transfemoral amputee using microcontroller. This paper gives the better controlling SEMG signal and also very smooth and easy controlling of the Prosthetic leg motor using Myoelectric Controller.
Electromyography Analysis for Person IdentificationCSCJournals
Physiological descriptions of the electromyography signal and other literature say that when we make a motion, the motor neurons of respective muscle get activated and all the innervated motor units in that zone produce motor unit action potential. These motor unit action potentials travel through the muscle fibers with conduction velocity and superimposed signal gets recorded at the electrode site. Here we have taken an analogy from the speech production system model as the excitation signal travels through vocal tract to produce speech; similarly, an impulse train of firing rate frequency goes through the system with impulse response of motor unit action potentials and travels along the muscle fiber of that person. As the vocal tract contains the speaker information, we can also separate the muscle fiber pattern part and motor unit discharge pattern through proper selection of features and its classification to identify the respective person. Cepstral and non uniform filter bank features models the variation in the spectrum of the signals. Vector quantization and Gaussian mixture model are the two techniques of pattern matching have been applied.
Review on Feature Extraction and Classification of Neuromuscular DisordersIJMTST Journal
Electromyography is an efficient tool for the diagnosis of neuromuscular diseases. There are wide variety
of neuromuscular diseases that affects the muscles and nervous system, in which the most important are
Amyotrophic Lateral Sclerosis (ALS) and Myopathy. These diseases change the shape and characteristic of
motor unit action potentials (MUAPs). By analyzing the EMG signals and MUAPs neuromuscular diseases can
be diagnosed. This paper gives a brief review of various techniques used in the analysis of EMG signals for
the diagnosis of neuromuscular diseases. Various features that are extracted from the signals in time
domain, frequency domain and time-frequency domain and different classification techniques and their
performance are also studied in this paper
The wavelet packet based filtering/denoising performance is analyzed by using Balance Sparsity-norm & fixed form thresholding (soft &hard) methods where the Mean, Standard Deviation (SD) & Mean Absolute Deviation (MAD) is calculated at different global threshold for healthy, myopathic & neuropathic EMG signals. The intension is to extract the residuals of healthy and diseased EMG signals which provide the significant results for classification of healthy, myopathic & neuropathic EMG signals. The features are extracted or the coefficients are generated using “haar-3”. These two methods have a fairly large accuracy percentage which can be used as a diagnostic tool in medical field. The technique mentioned in this paper is a mathematical tool for the detection of myopathy and neuropathy as compared to the conventional instrumental ones. Hence, it is faster, efficient and robust as it is resistant to environmental hazards.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
2. Electrodiagnosis is the field of study that, by employing the
science of electrophysiology, uses electrical technology to
study human neurophysiology.
Information needed to answer any questions regarding the
nerve injury, muscle injury, muscle disease, localization, and
prognosis can be thus obtained through the help of
electrodiagnostic testings.
The information collected through the testing helps to focus
treatment on the exact site of injury.
In addition to using a patient's history, physical examination
and imaging results, the clinician can obtain information
about the functional status of various parts of the nervous
system by monitoring its electrical activity. This is
accomplished via a variety of Electrodiagnostic tests like:
Electromyography (EMG)
Nerve conduction velocity (NCV)
Evoke potentials (EP)
3. One should be well aware of the normal neurophysiologic
function of the nervous system.
Electrical signals are generated in the brain, pass through the
spinal cord and travel into the peripheral nervous system.
These signals are carried down the nerve to the synaptic
cleft, where a chemical release of acetylcholine crosses the
synaptic cleft to create an electrical discharge in the muscle.
This electrical signal causes the muscle to contract.
Neurodiagnostic testing bypasses the brain by delivering an
electrical charge to the patient.
The equipment then is used to measure several aspects of the
body's response to that signal to determine whether it is
functioning properly.
Location and degree of the injury, acuity, prognosis, and (in
some cases) specific diagnosis can also be determined by the
electrodiagnostic testing.
4.
5. Electromyography is the study of a motor unit activity.
A technique by which the action potentials of contracting
muscle fibres and motor units are recorded and displayed.
Recording the EMG requires a three phase system:
An input phase: when the electrodes pick up electrical
potential from contracting muscle
A processor phase: In this the small electrical signal is
amplified
An output phase: electrical signal is converted to visual or
audible signals so that data can be displayed and analysed.
An electrode is a transducer, a device for converting one form
of energy into another.
The distance of recording electrodes from the muscle fibre
determines the rise time and fall time of muscle fibres.
6. The electrodes are of the following types:
Surface electrodes
Needle electrodes
Finewire indwelling electrodes
Intracellular electrodes
Multilead electrode etc.
Technique of EMG recording:
It includes the following steps:
1. Patient is asked to relax and the needle is inserted inside
the muscle, simultaneously spontaneous burst of potential
is observed.
2. The insertion activity is observed when the needle breaks
the fibre membrane. The equipment of EMG recording is set
up at sweep speed 5-10 ms/div; amplification 50 mv/divison
for studying spontaneous activity and 200 microvolt for
motor unit potentials and filter selting 20-10000 Hz.
3. The duration of MUP’s should be measured at a gain of
100microvolt/division and sweep speed of 5 ms/div and low
filter at 2-3 Hz
7.
8. MOTOR UNIT ACTION POTENTIAL:
It is the sum of electrical potential of the muscle fibres
present in the single motor unit, having the capabilities of
being recorded by he electrodes.
The normal motor unit action potential depends upon on the
given five factors that is amplitude, duration, shape, sound
and frequency.
In the normal muscle, the amplitude of a single motor unit
action may range from 300 mV to 5mV from peak to peak.
The total duration measured from initial baseline will
normally range 3 to 16 m-sec.
The duration of the motor unit action potential normally
varies from 5 to 15 ms depending upon the age of the
patients, muscles examine and temperature.
Rise time of MUAP: duration from the initial positive two
subsequent negative peak. It is an indicator of the distance of
needle electrode from the muscle fiber. A greater rise time is
attributed to the resistance and capacitance of the
intervening tissue.
9. Amplitude of MUAP: It is measured from peak to peak . It
depends upon size and density of muscle fiber, synchrony of
firing, proximity of needle to muscle fiber, age of subject,
muscle examine and muscle temperature. Decrease in the
muscle temperature results in the higher amplitude and
longer duration of MUAP.
Phase of MUAP: portion of MUAP between departure and
return to the base line. It can be monophasic, diphasic or
polyphasic depending on the number of phases obtained.
10. Artifacts: Any unwanted electrical activity that arises outside
of the tissues being examined. These artifacts can be of
sufficient voltage to distort the output signal markedly.
They are of two types:
1: Movement Artifacts
2: Power Line Interference
Cross-Talk: Another important consideration is the ability of
electrodes to record activity selectively from a single muscle.
Because of volume conduction, electrical activity from nearby
contracting muscles, other than the muscle of interest, may
reach the electrodes and be processed simultaneously.
There is no way to distinguish this activity by looking at the
output signal.
Careful electrode placement and spacing and choice of size and
type of electrode will help control such cross-talk or electrical
overflow.
11. Amplifier System: Before motor unit potential can be
visualized, it is necessary to amplify small myoelectric signals.
An amplifier converts the electric signal large enough to be
displayed.
Differential amplifier: The electric potential is composed of
the EMG signal from muscle contraction and unwanted noise
from the static electricity in the air and power lines. To control
for the unwanted part of the signal , the differential amplifier
is used, as noise is transmitted to the amplifier as a common
mode signal when the difference of potential is reduced at both
the ends, the noise being cancelled out both the ends of
amplifier.
Common mode rejection ratio: CMRR is a measure of how
much the desired signal voltage is amplified relative to the
unwanted signal.
A CMRR of 1000:1 indicates that the wanted signal is amplified
1000 times more than the noise. It can also be expressed
100000:1. The higher is this value , the better it is.
12.
13. Abnormal spontaneous potential:
As a normal muscle at rest exhibits electrical silence, any
activity seen during the relax state is considered as abnormal.
The common abnormal spontaneous activities are:
1.Fibrillation Potential
2. positive sharp waves
3. fasciculation potential
4. repetitive discharges
Fibrillation potential: fibrillations are spontaneous occurring
action potential from single muscle fibre.
Fibrillation potential is seen in the denervated muscle as they
give spontaneous dischages due to circulating acetyle choline.
Fibrillation potential are classically indicative of LMN
disorders such as peripheral lesion, anterior horn cell disease,
radiculopathy and polyneuropathies with axonal degeneration.
14. Positive Sharp Waves: Found in denervated muscles at rest
and accompanied by fibrillation potentials. These are
recorded as a biphasic with a sharp initial positive deflection
followed by slow negative phase. Positive sharp waves are
seen in primary muscle disease like muscular dystrophy,
polymyositis but sometimes also seen in UMN lesions.
Fasciculation potential: random twitching of muscle fiber
or a group that may be visible through skin. These are
spontaneous potentials (may be biphasic, triphasic or
polyphasic) seen with irritation or degeneration anterior
horn cell, nerve root compression and muscle spasm or
cramps.
Repetitive discharges: also called “bizarre high frequency
discharges”. These are characterized by an extended train of
potentials of various forms. These are seen with lesions of
the anterior horn cells, peripheral nerves and with the
myopathies.
15. It is the application of electrodiagnostic testing to the CNS.
These tests are clinically useful means to do the following:
1. demonstrate abnormal sensory function when the
neurologic examination results do not reveal abnormalities.
2.reveal clinically unsuspected pathology when demyelinating
diseases are suggested.
3. objectively monitor a patient’s progress or deterioration
over time.
The test includes a number of ways to perform Evoke
potentials like:
1. somatosensory EP
2. visual EP
3. Brainstem auditory EP
4. Dermatomal and myotomal EP
16. Somato-sensory EP: Stimulation
occurs at extremity, recorded
on scalp near sensory cortex.
Useful in localizing demyelinating
diseases such as MS, determine
level of coma and to evaluate for
brain death.
Visual EP: A photoelectric
checkboard-pattern flash is used
to stimulate the optic nerve
which is recorded on the cortex
and is then arrived at occiput,
near the visual centres.
17. Brainstem auditory EP:
The auditory click is used to
stimulate cochlear nerve
and response is collected over
the cortex area.
Dermatomal EP and
Myotomal EP: The stimulation
occurs along the dermatome
or myotome with it’s recordings
at the cortex.
18. ROLE OF Evoke Potentials IN SURGERIES:
It helps in detecting any interruptions in the signals across
the spinal cord while the spinal surgeries (for eg; scoliosis)
are progressed.
The electromyographer repeatedly performs the somato-
sensory evoke potentials and informs the surgeon about the
interruptions, so that needed interventions can be taken,
thus, permanent injury can be prevented.
19.
NCV test determines how quickly electrical signals move
through a particular peripheral nerve. It also sometimes known as
NERVE CONDUCTION STUDY and is used in the diagnosis of nerve
damage or nerve dysfunction.
Purpose of NCV test :
• The peripheral nerves are the nerve outside the brain and the
spinal cord. These nerves helps control the muscles and
experience important senses.
• Healthy nerves send electrical signals more quickly and with
greater strength than damaged nerves.
For this reason, NCV is helpful in determining the existence,
type, and extent of nerve damage in a patient.
• The NCV test allows the physician to tell the difference between
an injury to the nerve axon and an injury to the myelin sheath-
the protective covering surrounding the nerve.
20. It is also useful for telling the difference between a nerve
disorder and a condition where nerve injury has affected
the muscles.
Being able to make these distinctions is important for
diagnosis and for determining an appropriate course of
treatment.
21. When is this test necessary:
This test is useful for diagnosing a variety of different
muscular and neuromuscular disorders.
A doctor may use this test if they suspect a pinched nerve.
Alternately, they may use it if they wish to check for the
presence of nerve disease.
The test is often performed with an electromyography
(EMG), which is a test that records electrical signals
moving through the muscles.
Preparation on NCV test:
Going into the test, it is important that the patient have a
normal body temperature. This is because a low body
temperature slows down nerve conduction.
If the weather is very cold, for instance, the doctor may
ask the patient to sit in a warm room for a few minutes
before the test is performed.
22. How a NCV test is performed:
Flat, patch-style electrodes are placed on the skin at
intervals over the nerve that is being examined.
These electrodes give off low- intensity electrical impulses,
which stimulate the nerve.
This stimulation may feel like a slight electric shock, though it
is not particularly painful.
This impulses produced by this electrical current are viewed
on an oscilloscope or computer screen. This monitoring system
allows the physician to determine how fast the impulses are
travelling through the nerves.
23. Understanding the test results:
The test may have the following outcomes:
If the response from the electrical current is slower than
normal, this is a likely sign of damage to the myelin sheath.
If the response shows a decreased response but with a normal
speed, there is probably damage to the nerve fiber.
The result of this test, as well as the cause of the nerve
damage, will help determine a proper course of treatment.
Possible causes for abnormal results on this test are:
1. axonopathy (damage to the nerve cell)
2. conduction block (obstacle to impulse within nerve)
3. demyelination (damage to the myelin sheath)