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Printable version
Printable version

... b. depolarization is when the inner membrane becomes less negative (more positive) c. the movement of the nerve impulse is the depolarization area moving down the nerve d. a nerve threshold must be reached before the action potential is generated e. there is a refractory period, which is a resting t ...
Vestibulospinal Tract - Viktor`s Notes for the Neurosurgery Resident
Vestibulospinal Tract - Viktor`s Notes for the Neurosurgery Resident

... The vestibulospinal tract arises from the lateral vestibular nucleus (Deiters nucleus) and descends ipsilaterally in the lateral funiculus of the spinal cord. Vestibulospinal neurons synapse in laminae VII, VIII, and IX of the spinal cord. Several vestibulospinal fibers synapse directly with α and ϒ ...
STUDY GUIDE CHAPTERS 48 and 50 THE NERVOUS SYSTEM
STUDY GUIDE CHAPTERS 48 and 50 THE NERVOUS SYSTEM

... *Think about this: How might a brain researcher investigate the function of different areas of the brain, without using electrodes or invasive surgery? We will discuss Nervous Systems, Chapter 49, in class. In Chapter 50, Sensory and Motor Mechanisms, it is more important to learn about general sens ...
Notes - The Nervous System
Notes - The Nervous System

... brain. 4. The interneurons interpret the nerve impulses and decide on a response, you should answer the phone. 5. Impulses travel along motor neurons to the muscles. 6. Muscles in the arm carry out the response and you reach to pick up the phone. Is this an example of an automatic response that occu ...
File
File

... except smell • Integrates visual, auditory, taste, and somatosensory information and sends it to the appropriate area in the cerebrum • Involved in higher mental functions (memory, emotions) Pineal gland • Secretes the hormone melatonin, which is involved in maintaining a normal sleep-wake cycle ...
Review - TheThinkSpot
Review - TheThinkSpot

... • Neuron signaling is an all-or-nothing event. When the number of positive inputs exceeds a certain threshold, the neuron fires an action potential—an electrochemical signal that travels down the axon. In the synapse, neurotransmitters pass on information to the next neuron or gland. ...
Nervous Tissue
Nervous Tissue

... Basic Tasks of the Nervous System Sensory Input: Receptors monitor both external and internal environments. Integration: Process the information (at synapses) and often integrate it with stored information. Motor output: If necessary, signal effector organs to make an appropriate response. ...
sensory1
sensory1

... accuracy in “two point discrimination” test (upcoming lab!) ...
Mind, Brain & Behavior
Mind, Brain & Behavior

... Receptive fields overlap, so each area of skin is monitored by multiple neurons. ...
File
File

... in the nervous system that carries information from the various parts of the body to the brain. It’s like a large communication cable  The spinal cord is also known as the reflex centre ...
Unit 8 Review Sheet[1]
Unit 8 Review Sheet[1]

... Pupil: the hole in your eye that light passes through. Iris: the colored muscle in your eye that controls the size of the pupil. Lens: focuses light rays onto the retina Accommodation: the bending of the retina to focus an image on the retina Far sighted: the lens focuses the image behind the retina ...
Name
Name

... 1. What is homeostasis? Give examples. 2. What are the functions of the nervous system? 3. What is the structure of a neuron and what kinds of neurons are found in the body? 4. How do nerve impulses travel from one neuron to another? 5. What are the structure and functions of the central nervous sys ...
Applicator - Research - Vanderbilt University
Applicator - Research - Vanderbilt University

... Clarke, H.L. "Anaesthesia for Out-Patient Procedures." The West African Medical Journal 11 (1962): 155-160. Cork et al. "The Effect of Cranial Electrotherapy Stimulation (CES) on Pain Associated with Fibromyalgia." The Internet Journal of Anesthesiology (2004): 1-7. Hammond et al. "Electrophysiologi ...
22 reflexes 1 - The reflex arc
22 reflexes 1 - The reflex arc

... At the sensory organ, the response is a NONPROPAGATED GRADED RESPONSE If it reaches threshold, it is interpreted into an ALL-OR-NONE ACTION POTENTIAL This travels along the afferent neuron The frequency of the action potentials is what determines the intensity of the stimulus At the synapse, the act ...
Nervous System PPT - Effingham County Schools
Nervous System PPT - Effingham County Schools

... structures • cell bodies, dendrites ...
Neurological Assessment
Neurological Assessment

... movement but coordinates it  Controls skeletal muscles  Controls voluntary movements ...
No Slide Title
No Slide Title

... – small, unmyelinated fibers = 0.5 - 2.0 m/sec – small, myelinated fibers = 3 - 15.0 m/sec – large, myelinated fibers = up to 120 m/sec ...
Chapter 7: The Nervous System
Chapter 7: The Nervous System

... carry information to the central nervous system 2. Motor or Efferent division- Nerve fibers that carry impulses away from the central nervous system. The Two subdivisions are the somatic and autonomic nervous system. a. Somatic nervous system = voluntary b. Autonomic nervous system = involuntary fur ...
Nervous System 2
Nervous System 2

... 6. Be able to name/label the key structures of the hindbrain, and know the major functions of each. 7. Where is the center for controlling sleep and wakefulness? How does its location relate to this function? 8. What are the major functions of the midbrain? Compare for mammals and non-mammals. 9. Be ...
ppt
ppt

... • that are abrupt, pulse-like changes in the membrane potential that last a few ten thousandths of a second. • Action potentials can be divided into three phases: the resting or polarized state, depolarization, and repolarization • The amplitude of an action potential is nearly constant and is not r ...
Introduction - Fullfrontalanatomy.com
Introduction - Fullfrontalanatomy.com

...  Posterior gray horns contain somatic and visceral sensory nuclei; anterior gray horns contain somatic motor nuclei.  Lateral gray horns contain visceral motor neurons.  Gray commissures contain the axons of interneurons that cross from one side of the cord to the other. ...
Information Processing SG AK
Information Processing SG AK

... a) sensory neurons—nerve cells that carry a nerve impulse to the central nervous system b) motor neurons—nerve cells that carry a nerve impulse away from the central nervous system and towards the muscle or gland that needs to respond c) interneurons—nerve cells found only in the brain and spinal co ...
Savage Science AP Biology
Savage Science AP Biology

... potential of a sensory receptor Many sensory receptors are very sensitive: they are able to detect the smallest physical unit of stimulus – For example, most light receptors can detect a photon of light ...
file - Athens Academy
file - Athens Academy

... A. if the membrane potential reaches a threshold value. B. when negative proteins and ions rapidly enter the cell. C. when the inside of the cell becomes negative compared to the outside. D. when there is repolarization. E. All of these are correct. ...
The Nervous System
The Nervous System

... Where is the signal electrical?  Within ...
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Evoked potential

An evoked potential or evoked response is an electrical potential recorded from the nervous system of a human or other animal following presentation of a stimulus, as distinct from spontaneous potentials as detected by electroencephalography (EEG), electromyography (EMG), or other electrophysiological recording method.Evoked potential amplitudes tend to be low, ranging from less than a microvolt to several microvolts, compared to tens of microvolts for EEG, millivolts for EMG, and often close to a volt for ECG. To resolve these low-amplitude potentials against the background of ongoing EEG, ECG, EMG, and other biological signals and ambient noise, signal averaging is usually required. The signal is time-locked to the stimulus and most of the noise occurs randomly, allowing the noise to be averaged out with averaging of repeated responses.Signals can be recorded from cerebral cortex, brain stem, spinal cord and peripheral nerves. Usually the term ""evoked potential"" is reserved for responses involving either recording from, or stimulation of, central nervous system structures. Thus evoked compound motor action potentials (CMAP) or sensory nerve action potentials (SNAP) as used in nerve conduction studies (NCS) are generally not thought of as evoked potentials, though they do meet the above definition.
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