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Neurophysiology

A branch of neuroscience that studies the physiology of the nervous system. From the Greek words nerve and nature, this science looks at the way that nerves function.

321 Questions

What is a thermostat in your house a good analogy for?

The thermostat in your house is a good analogy for the way your body regulates its temperature. It always tries to stay at 98. 6 degrees Fahrenheit and cools or warms itself based on outside forces.

What is a nervous disposition?

A nervous disposition refers to a tendency to easily become anxious, worried, or fretful in response to external stimuli or situations. People with a nervous disposition may feel more sensation of stress or fear in comparison to individuals who are more laid back or relaxed.

Is their a cure for peripheral neurology?

Peripheral neurology disorders are varied and treatment depends on the specific condition. Some conditions may not have a cure but can be managed with medications, physical therapy, and lifestyle changes. It is important to consult with a healthcare provider for an accurate diagnosis and appropriate treatment plan.

What type of channel is responsible for action potential?

Voltage-gated sodium channels are primarily responsible for initiating and propagating action potentials in neurons. These channels open in response to depolarization of the cell membrane, allowing sodium ions to enter the cell and initiate the rapid depolarization phase of the action potential.

What body system is neuritis related to?

Neuritis is inflammation of a nerve, so it relates to the nervous system.

What is the role of the medulla in the symptoms of autism?

The medulla, a part of the brainstem, is not directly implicated in the symptoms of autism. Autism is primarily associated with differences in brain regions involved in social communication, emotional processing, and sensory integration, such as the prefrontal cortex and amygdala. The medulla is more involved in regulating basic physiological functions like heart rate, breathing, and reflexes.

How do you pronounce Papez from the diagram Papez circuit in the brain?

Papez is pronounced "PAH-pez", with the emphasis on the first syllable. It is named after the Hungarian neuroanatomist James W. Papez.

Can optic neuritis cause lazy eye?

Optic neuritis typically affects only one eye and does not directly cause lazy eye (amblyopia). However, if left untreated or if vision is significantly compromised in one eye, it could potentially lead to amblyopia due to lack of visual stimulation to that eye. It is important to seek prompt medical attention for optic neuritis to prevent any complications.

What is executive function of the brain?

Executive function refers to a set of mental skills that help you manage your time, pay attention, switch focus, plan and organize, remember details, and juggle multiple tasks successfully. It allows you to set goals, prioritize tasks, and control impulses in order to achieve them. Executiuve function is managed by the prefrontal cortex of the brain.

Does sleeping a lot help emphysema?

If it does I am cured! My question is; I am sleeping 18-24 hours a day, and having insomnia, and not using my Ambien, I am sleeping like I am dying. Is this normal?

Thanks

Worried in Texas

Sciatica reflects neuritis in a nerve from the?

Sciatica is caused by compression or irritation of the sciatic nerve, which is the largest nerve in the body. This can result in pain, numbness, or tingling that radiates down the back of the leg. Common causes include a herniated disc, bone spur, or muscle imbalance.

Arrange these action potential events in their proper sequence?

The correct sequence of action potential events is: 1. Resting membrane potential, 2. Depolarization, 3. Repolarization, 4. Hyperpolarization.

How do you have a orgism?

According to Urban Dictionary, Orgism refers to the creation of a parallel universe.

What is a tonic current?

Not all the electrical signalling in the nervous

system is by way of action potentials, or impulses.

Indeed it could be argued that some of the most

important, if not the most important, of the central

nervous system's communications depend upon

non-impulse signalling. These signals, which are at

least one order of magnitude and sometimes two or

more orders of magnitude, weaker than action

potentials have been termed electrotonic potentials.

They are small depolarisations of a nerve process's

membrane and are caused by the essentially passive

spread of electrical current through the conducting

fluids inside and outside nerve cells and their

processes. Nonetheless, however small electrotonic

potentials may be, they can have very considerable

effect on the physiology of neuronal membranes

and thus on the large-scale functioning of the brain.

cited from - Elements of Molecular Neurobiology 3rd ed C. U. M. Smith

What is curare poisoning?

Curare poisoning is caused by the ingestion or injection of curare, a plant-derived toxin commonly used as a muscle relaxant. Symptoms of curare poisoning include paralysis, respiratory failure, and potentially death if left untreated. Treatment involves supporting vital functions and administering antidotes like cholinesterase inhibitors.

What is mono neuritis multiplex?

Mononeuritis multiplex is a condition in which multiple individual nerves are damaged in different parts of the body. This can result in varying symptoms such as pain, weakness, or sensory changes in affected areas. It is often caused by conditions like diabetes, vasculitis, or infections.

Does Neurofibromatosis or pulmonary stenosis cause violent mood swings and fatigue?

Neurofibromatosis is a genetic disorder that primarily affects the nervous system and does not directly cause violent mood swings and fatigue. Pulmonary stenosis is a heart condition that restricts blood flow from the heart to the lungs, and it also does not specifically cause these symptoms. However, individuals with chronic health conditions may experience emotional difficulties and fatigue due to the stress and physical toll of managing their condition.

Starting salary in neuroscience?

Starting salaries for neuroscience-related careers can vary widely depending on factors such as job location, level of education, and type of employer. On average, entry-level positions in neuroscience can range from $40,000 to $60,000 per year. Research assistants, lab technicians, and entry-level roles in pharmaceutical or biotech companies are common starting points for those entering the field of neuroscience.

What is the ICD-9 code for a neurology consult?

The ICD-9 code for a neurology consult is V67.59 - Follow-up examination, following other treatment.

What is the difference between action potentials and synaptic potentials?

A synaptic potential exists at the INPUT of a neuron (dendrite), and an action potential occurs at the OUTPUT of a neuron (axon). (from OldGuy)


(from Ilantoren:) A synaptic potential is the result of many excitatory post synaptic potentials (epsp) each one caused by the synaptic vesicles released by the pre-synaptic terminus. If there are enough of these epsp then the responses will summate and depolarize the post-synaptic membrane at the axon hillock enough to fire an action potential.

What is plantar digital neuritis?

Plantar digital neuritis is a condition involving inflammation or compression of the digital nerves in the foot. Symptoms may include pain, numbness, and tingling in the toes, typically worsened by pressure or movement. Treatment may involve rest, physical therapy, orthotics, or in severe cases, surgery.

What is the correct sequence of events that follows a threshold potential?

§Labor and management

§Productivity

§Wage levels

§Training needs

§Local infrastructure

Measuring site potential in step 3 involves determining whether a site can supply adequate resources needed to carry out the proposed business activity. Key issues include:•For many companies the most important resources will be labor and management.

•The productivity and wage levels of local labor and managers.

•The cost of training local managers, which can mean substantial investments of time and money.

•And the efficiency of local infrastructures, including roads, bridges, airports, seaports, and telecommunications systems.

What is neuritis of the laryngeal nerves?

Neuritis of the laryngeal nerves is inflammation of the nerves that control the muscles of the larynx (voice box). This condition can cause symptoms such as hoarseness, difficulty speaking, and changes in voice quality. Treatment may involve rest, voice therapy, and in some cases, medication or surgery.

What does nerve entrapment exacerbrated by lumbar extension hip extension and lateral flexion of the lumbar spine mean?

This means that when your muscles stretch certain ways that the nerves are being pressed against and can't move causing severe pain down the lining of the muscles being used. Flexion is used when the toes are pointed causing the muscles in the back of the leg to pull, and extension is when you extend a muscle past its normal resting point. These stretches cause many painful issues for people diagnosed with disorders such as sciatica.

Irregular transverse thickenings of the sarcolemma?

Irregular transverse thickenings of the sarcolemma connect cardiac muscle fibers to neighboring muscle fibers. The gap junctions that occur with irregular transverse thickening of the sarcolemma allow the myocardium to contract as a single unit.