Neuroanatomy and Neurophysiology
Expert-defined terms from the Graduate Certificate in Clinical Neurophysiology Practice course at Stanmore School of Business. Free to read, free to share, paired with a globally recognised certification pathway.
Neuroanatomy #
Neuroanatomy
Neuroanatomy is the study of the structure and organization of the nervous syste… #
It involves understanding the various parts of the brain, spinal cord, and peripheral nerves, as well as how they function and interact with each other. In the Graduate Certificate in Clinical Neurophysiology Practice, a solid understanding of neuroanatomy is essential for interpreting and analyzing neurophysiological data.
- Central Nervous System (CNS): The brain and spinal cord #
- Central Nervous System (CNS): The brain and spinal cord.
- Peripheral Nervous System (PNS): The network of nerves that connect the CNS to… #
- Peripheral Nervous System (PNS): The network of nerves that connect the CNS to the rest of the body.
- Neurons: The functional units of the nervous system, responsible for transmitt… #
- Neurons: The functional units of the nervous system, responsible for transmitting electrical and chemical signals.
Neurophysiology #
Neurophysiology
Neurophysiology is the study of the function of the nervous system #
It focuses on how nerve cells communicate with each other and how the nervous system generates electrical signals. In the context of clinical neurophysiology practice, neurophysiology is used to diagnose and monitor various neurological conditions through techniques such as electroencephalography (EEG), electromyography (EMG), and nerve conduction studies.
- Electrophysiology: The study of the electrical properties of biological cells… #
- Electrophysiology: The study of the electrical properties of biological cells and tissues.
- Neurotransmitters: Chemical substances that transmit signals from one neuron t… #
- Neurotransmitters: Chemical substances that transmit signals from one neuron to another.
- Synapse: The junction between two neurons where communication occurs #
- Synapse: The junction between two neurons where communication occurs.
EEG (Electroencephalography) #
EEG (Electroencephalography)
EEG is a non #
invasive neurophysiological technique that records the electrical activity of the brain using electrodes placed on the scalp. It is commonly used to diagnose epilepsy, monitor brain activity during sleep, and evaluate patients with altered mental status.
Examples: #
Examples:
- EEG can detect abnormal brain wave patterns characteristic of certain seizure… #
- EEG can detect abnormal brain wave patterns characteristic of certain seizure disorders.
- Continuous EEG monitoring is often used in the intensive care unit to detect e… #
- Continuous EEG monitoring is often used in the intensive care unit to detect early signs of brain injury.
EMG (Electromyography) #
EMG (Electromyography)
EMG is a neurophysiological technique that records the electrical activity of mu… #
It involves inserting a needle electrode into the muscle to measure its electrical activity at rest and during contraction. EMG is used to diagnose neuromuscular disorders and assess muscle function.
Examples: #
Examples:
- EMG can help differentiate between muscle and nerve disorders by analyzing the… #
- EMG can help differentiate between muscle and nerve disorders by analyzing the pattern of electrical activity in the muscle.
- EMG is often used to evaluate patients with symptoms such as muscle weakness,… #
- EMG is often used to evaluate patients with symptoms such as muscle weakness, cramping, or twitching.
Nerve Conduction Studies #
Nerve Conduction Studies
Nerve conduction studies (NCS) are neurophysiological tests that measure the spe… #
By stimulating a nerve at one point and recording the response at another, NCS can help diagnose conditions such as carpal tunnel syndrome, peripheral neuropathy, and radiculopathy.
Examples: #
Examples:
- In carpal tunnel syndrome, NCS can show a delay in nerve conduction velocity a… #
- In carpal tunnel syndrome, NCS can show a delay in nerve conduction velocity across the wrist.
- NCS can help localize the site of nerve damage in conditions affecting multipl… #
- NCS can help localize the site of nerve damage in conditions affecting multiple nerves, such as diabetic neuropathy.
Evoked Potentials #
Evoked Potentials
Evoked potentials are neurophysiological responses generated by the nervous syst… #
There are different types of evoked potentials, including visual evoked potentials (VEP), auditory evoked potentials (AEP), and somatosensory evoked potentials (SSEP). These tests are used to assess the function of specific sensory pathways in the nervous system.
Examples: #
Examples:
- VEP can help diagnose optic neuritis by measuring the speed of conduction in t… #
- VEP can help diagnose optic neuritis by measuring the speed of conduction in the optic nerve.
- AEP can evaluate auditory pathway function in patients with hearing loss or su… #
- AEP can evaluate auditory pathway function in patients with hearing loss or suspected auditory nerve damage.
Neuroplasticity #
Neuroplasticity
Neuroplasticity refers to the brain's ability to reorganize and adapt in respons… #
It involves the formation of new neural connections and the strengthening or pruning of existing ones. Understanding neuroplasticity is crucial in rehabilitation settings, where interventions aim to promote recovery and improve function after neurological injury or disease.
Examples: #
Examples:
- After a stroke, rehabilitation exercises can stimulate neuroplasticity to help… #
- After a stroke, rehabilitation exercises can stimulate neuroplasticity to help the brain relearn lost motor skills.
- Learning a new language can lead to structural changes in the brain, reflectin… #
- Learning a new language can lead to structural changes in the brain, reflecting the process of neuroplasticity.
Neurotransmitters #
Neurotransmitters
Neurotransmitters are chemical substances that transmit signals from one neuron… #
They play a crucial role in regulating various physiological processes, including mood, behavior, cognition, and motor function. Common neurotransmitters include dopamine, serotonin, and acetylcholine.
Examples: #
Examples:
- Dopamine is involved in reward and motivation pathways in the brain #
- Dopamine is involved in reward and motivation pathways in the brain.
- Serotonin is known for its role in regulating mood and emotional states #
- Serotonin is known for its role in regulating mood and emotional states.
Synapse #
Synapse
A synapse is the junction between two neurons where communication occurs #
It consists of a presynaptic terminal, a synaptic cleft, and a postsynaptic terminal. Neurotransmitters released from the presynaptic terminal travel across the synaptic cleft to bind to receptors on the postsynaptic terminal, transmitting signals from one neuron to another.
Examples: #
Examples:
- Excitatory synapses release neurotransmitters that depolarize the postsynaptic… #
- Excitatory synapses release neurotransmitters that depolarize the postsynaptic neuron, making it more likely to fire an action potential.
- Inhibitory synapses release neurotransmitters that hyperpolarize the postsynap… #
- Inhibitory synapses release neurotransmitters that hyperpolarize the postsynaptic neuron, making it less likely to fire an action potential.