FIGURE LEGENDS FIGURE 25.1 Drawing of the auditory periphery
... fibers, but the primary-like with notch type additionally has a brief notch following the initial peak. Chopper units have regular interspike intervals that result in regular peaks in the PST. Most of these patterns are very different from the primary-like PST and irregular interspike intervals of t ...
... fibers, but the primary-like with notch type additionally has a brief notch following the initial peak. Chopper units have regular interspike intervals that result in regular peaks in the PST. Most of these patterns are very different from the primary-like PST and irregular interspike intervals of t ...
Nervous System
... Kingdom, they have a network of nerves that conducts signals from sensory cells to muscle cells. But their nervous system is not centralized. 3) Many flatworms have a netlike nerve system like cnidarians but some have a more organized and complex system with a brain and spinal chord. The nervous sys ...
... Kingdom, they have a network of nerves that conducts signals from sensory cells to muscle cells. But their nervous system is not centralized. 3) Many flatworms have a netlike nerve system like cnidarians but some have a more organized and complex system with a brain and spinal chord. The nervous sys ...
CaV3.1 is tremor rhythm pacemaker
... tremor induced by harmaline. The CaV3.1-deficient inferior olive neurons lacked subthreshold membrane potential oscillations and failed to trigger 4-10 Hz rhythmic burst discharges in response to harmaline-induced hyperpolarization. In addition, selective knock-down of this gene in the inferior oliv ...
... tremor induced by harmaline. The CaV3.1-deficient inferior olive neurons lacked subthreshold membrane potential oscillations and failed to trigger 4-10 Hz rhythmic burst discharges in response to harmaline-induced hyperpolarization. In addition, selective knock-down of this gene in the inferior oliv ...
Scoring Rubric
... The nervous system is a critical system that sends signals throughout the body to coordinate movements and actions. It allows communication throughout your body and contains the brain, spinal cord and a large network of nerves. In total, your nervous system is made of 85 billion nerve cells called n ...
... The nervous system is a critical system that sends signals throughout the body to coordinate movements and actions. It allows communication throughout your body and contains the brain, spinal cord and a large network of nerves. In total, your nervous system is made of 85 billion nerve cells called n ...
Key - Cornell
... 1. Name some of the parameters that one can extract from a neural spike train in order to test for a correlation with a given stimulus quality (like amplitude). #action potentials, rate, frequency, interspike interval, latency to first spike … ...
... 1. Name some of the parameters that one can extract from a neural spike train in order to test for a correlation with a given stimulus quality (like amplitude). #action potentials, rate, frequency, interspike interval, latency to first spike … ...
Issue 22_Pump Up the Volume
... opens pores in the stereocilia letting potassium ions seep in, which create an electric current. There is where prestin steps in. Prestin is a transmembrane protein found at the base of every outer hair cell and acts as an anion transporter when it senses a change in transmembrane potential. Anion t ...
... opens pores in the stereocilia letting potassium ions seep in, which create an electric current. There is where prestin steps in. Prestin is a transmembrane protein found at the base of every outer hair cell and acts as an anion transporter when it senses a change in transmembrane potential. Anion t ...
Nerve Impulse Transmission
... carry it toward the cell body, which contains the nucleus. • The axon carries the impulse from the cell body toward the synaptic knobs where it will be transferred to other neurons. ...
... carry it toward the cell body, which contains the nucleus. • The axon carries the impulse from the cell body toward the synaptic knobs where it will be transferred to other neurons. ...
Control of Movement
... State of development More advance nervous system -> more complex movement Simple – 2 neuronal system of sea angel Complex – mammals (some species can walk right after birth) Humans – 1 year for walking (Toddlers can’t walk, because there isn’t a strong enough skeleton-muscular and neuronal s ...
... State of development More advance nervous system -> more complex movement Simple – 2 neuronal system of sea angel Complex – mammals (some species can walk right after birth) Humans – 1 year for walking (Toddlers can’t walk, because there isn’t a strong enough skeleton-muscular and neuronal s ...
Nervous Systems
... 28.5 The action potential propagates itself along the axon The frequency of action potentials (but not their strength) changes with the strength of the stimulus. ...
... 28.5 The action potential propagates itself along the axon The frequency of action potentials (but not their strength) changes with the strength of the stimulus. ...
of the smooth muscles
... The α action, which is also inhibition of contraction, is associated with increased Ca2+ efflux from the muscle cells. ...
... The α action, which is also inhibition of contraction, is associated with increased Ca2+ efflux from the muscle cells. ...
Motor Neurons
... • Myelin Sheath An insulating layer around an axon. Made up of Schwann cells. • Nodes of Ranvier Gaps between schwann cells. – Conduction of the impulse. (Situation where speed of an impulse is greatly increased by the message ‘jumping’ the gaps in an axon). ...
... • Myelin Sheath An insulating layer around an axon. Made up of Schwann cells. • Nodes of Ranvier Gaps between schwann cells. – Conduction of the impulse. (Situation where speed of an impulse is greatly increased by the message ‘jumping’ the gaps in an axon). ...
Slide 1
... 28.5 The action potential propagates itself along the axon The frequency of action potentials (but not their strength) changes with the strength of the stimulus. ...
... 28.5 The action potential propagates itself along the axon The frequency of action potentials (but not their strength) changes with the strength of the stimulus. ...
Peripheral Nervous System (PNS) PNS – all neural structures
... Proprioceptors that monitor stretch in the anterior capsules that enclose the ...
... Proprioceptors that monitor stretch in the anterior capsules that enclose the ...
Perceptrons
... will be learned in a finite number of training cycles. • ADALINES (1960’s) similar to perceptrons but used a least-mean squares error based learning mechanism ...
... will be learned in a finite number of training cycles. • ADALINES (1960’s) similar to perceptrons but used a least-mean squares error based learning mechanism ...
Unit 5- Nervous
... - I can Identify the major types of cells in the nervous system and discuss the function of each - I can Identify types of neurons - I can briefly describe the mechanisms of transmission of a nerve impulse - I can briefly describe transmission at a synapse - I can define neurotransmitter and give se ...
... - I can Identify the major types of cells in the nervous system and discuss the function of each - I can Identify types of neurons - I can briefly describe the mechanisms of transmission of a nerve impulse - I can briefly describe transmission at a synapse - I can define neurotransmitter and give se ...
Neuromuscular Transmission - Dr. Logothetis
... induce rapid changes, within a few milliseconds, in the permeability and potential of the postsynaptic membrane. In contrast, the postsynaptic responses triggered by activation of G protein-coupled receptors occur much more slowly, over seconds or minutes, because these receptors regulate opening an ...
... induce rapid changes, within a few milliseconds, in the permeability and potential of the postsynaptic membrane. In contrast, the postsynaptic responses triggered by activation of G protein-coupled receptors occur much more slowly, over seconds or minutes, because these receptors regulate opening an ...
BIOL 273 Midterm #1 Notes
... The membrane potential of a cell can be changed by either having the potassium concentration gradient changed (so there is an imbalance, and more potassium has to move across to correct this) or having ion permeabilities change (so that other ions can get in on the action, baby!) o ...
... The membrane potential of a cell can be changed by either having the potassium concentration gradient changed (so there is an imbalance, and more potassium has to move across to correct this) or having ion permeabilities change (so that other ions can get in on the action, baby!) o ...
Neurophysiology
... • Language Processing in the left hemisphere. (Remember the right ear has the strongest connections to the left hemisphere) • Most people show a right-ear advantage in processing linguistic stimuli ...
... • Language Processing in the left hemisphere. (Remember the right ear has the strongest connections to the left hemisphere) • Most people show a right-ear advantage in processing linguistic stimuli ...
Anatomy
... Neuroscience for Kids. Created by Eric Chudler of the University of Washington. Has lots of useful basic information and good graphics. University of Washington Digital Anatomist: Interactive Brain Atlas. Has 2-D and 3-D brain cross sections. Great for visualizing internal structures such as the hip ...
... Neuroscience for Kids. Created by Eric Chudler of the University of Washington. Has lots of useful basic information and good graphics. University of Washington Digital Anatomist: Interactive Brain Atlas. Has 2-D and 3-D brain cross sections. Great for visualizing internal structures such as the hip ...
Rheobase
Rheobase is a measure of membrane excitability. In neuroscience, rheobase is the minimal current amplitude of infinite duration (in a practical sense, about 300 milliseconds) that results in the depolarization threshold of the cell membranes being reached, such as an action potential or the contraction of a muscle. In Greek, the root ""rhe"" translates to current or flow, and ""basi"" means bottom or foundation: thus the rheobase is the minimum current that will produce an action potential or muscle contraction.Rheobase can be best understood in the context of the strength-duration relationship (Fig. 1). The ease with which a membrane can be stimulated depends on two variables: the strength of the stimulus, and the duration for which the stimulus is applied. These variables are inversely related: as the strength of the applied current increases, the time required to stimulate the membrane decreases (and vice versa) to maintain a constant effect. Mathematically, rheobase is equivalent to half the current that needs to be applied for the duration of chronaxie, which is a strength-duration time constant that corresponds to the duration of time that elicits a response when the nerve is stimulated at twice rheobasic strength.The strength-duration curve was first discovered by G. Weiss in 1901, but it was not until 1909 that Louis Lapicque coined the term ""rheobase"". Many studies are being conducted in relation to rheobase values and the dynamic changes throughout maturation and between different nerve fibers. In the past strength-duration curves and rheobase determinations were used to assess nerve injury; today, they play a role in clinical identification of many neurological pathologies, including as Diabetic neuropathy, CIDP, Machado-Joseph Disease, and ALS.