the nervous system
... Explain how multipolar neurons act as miniature integrating centers, by describing the effects of the following on the frequency of action potentials in the postsynaptic neuron. - spatial and temporal summation of post synaptic potentials - balance between active inhibitory and active excitatory syn ...
... Explain how multipolar neurons act as miniature integrating centers, by describing the effects of the following on the frequency of action potentials in the postsynaptic neuron. - spatial and temporal summation of post synaptic potentials - balance between active inhibitory and active excitatory syn ...
File
... Refractory Period & Pumps Refractory Period: After a neuron fires an action potential it pauses for a short period to recharge itself to fire again. ...
... Refractory Period & Pumps Refractory Period: After a neuron fires an action potential it pauses for a short period to recharge itself to fire again. ...
Slide ()
... Short-term sensitization of the gill-withdrawal reflex in Aplysia. A. Sensitization of the gill-withdrawal reflex is produced by applying a noxious stimulus to another part of the body, such as the tail. A shock to the tail activates tail sensory neurons that excite facilitating (modulatory) interne ...
... Short-term sensitization of the gill-withdrawal reflex in Aplysia. A. Sensitization of the gill-withdrawal reflex is produced by applying a noxious stimulus to another part of the body, such as the tail. A shock to the tail activates tail sensory neurons that excite facilitating (modulatory) interne ...
Concepts of Neurobiology
... Axon, transmits message to next cell Dendrites, receives messages from cells Three classes of neurons in CNS Afferent (sensory) Efferent (motor) Interneurons in CNS ...
... Axon, transmits message to next cell Dendrites, receives messages from cells Three classes of neurons in CNS Afferent (sensory) Efferent (motor) Interneurons in CNS ...
Text - Department of Physiology, UCLA
... Electrical activity underlies most aspects of brain function. Our research focuses on the voltage-gated ion channels that confer electrical excitability on neurons and the consequences of changes in channel activity for neuronal firing, circuit function, behavior, and neuronal viability during devel ...
... Electrical activity underlies most aspects of brain function. Our research focuses on the voltage-gated ion channels that confer electrical excitability on neurons and the consequences of changes in channel activity for neuronal firing, circuit function, behavior, and neuronal viability during devel ...
Neurotransmission Notes
... 4. The voltage sensitive Na+ gates only stay open a moment and then K+ gates open. These allow K+ to rush out of the axon, bringing it back to a negative charge (when called this repolarization or hyperpolarization). 5. Although the charge is back to rest, the Na+ and K+ ions are on opposite sides ...
... 4. The voltage sensitive Na+ gates only stay open a moment and then K+ gates open. These allow K+ to rush out of the axon, bringing it back to a negative charge (when called this repolarization or hyperpolarization). 5. Although the charge is back to rest, the Na+ and K+ ions are on opposite sides ...
Neurology - Porterville College
... Excitatory Neurotransmitters • Dopamine – Gross subconscious movement – Fine motor skills – Emotional responses ...
... Excitatory Neurotransmitters • Dopamine – Gross subconscious movement – Fine motor skills – Emotional responses ...
Action_ Resting_Potential
... resting state. In the resting state, the inside of a neuron has a slightly higher concentration of negatively charged ions than the outside does. This situation creates a slight negative charge inside the neuron, which acts as a store of potential energy called the resting potential. The resting pot ...
... resting state. In the resting state, the inside of a neuron has a slightly higher concentration of negatively charged ions than the outside does. This situation creates a slight negative charge inside the neuron, which acts as a store of potential energy called the resting potential. The resting pot ...
Chemical Transmission BETWEEN Neurons
... Principles of Biological Psychology Everything psychological is simultaneously biological. The nervous system is complexity built from simplicity. The brain is both specialized and integrated. The nervous system is “plastic” especially at early ages of development. ...
... Principles of Biological Psychology Everything psychological is simultaneously biological. The nervous system is complexity built from simplicity. The brain is both specialized and integrated. The nervous system is “plastic” especially at early ages of development. ...
ADAM Nervous System Ion Channels Use this program only if you
... Use this program only if you need to review the differences between active and passive cell channels and voltage-gated and chemically-gated channels. Membrane Potential 1. What causes the outside surface of the cell membrane to be more positive? 2. The resting membrane potential in a neuron results ...
... Use this program only if you need to review the differences between active and passive cell channels and voltage-gated and chemically-gated channels. Membrane Potential 1. What causes the outside surface of the cell membrane to be more positive? 2. The resting membrane potential in a neuron results ...
- Describe the roles of the different types of glial cells
... after it has been released and facilitate its quick removal from the synapse. This is important as NT concentrations can rise from nM to mM following an AP and some NTs like glutamate can cause excitotoxicity and need to be quickly removed. Some rely on conc gradients of other substances. Family 1 t ...
... after it has been released and facilitate its quick removal from the synapse. This is important as NT concentrations can rise from nM to mM following an AP and some NTs like glutamate can cause excitotoxicity and need to be quickly removed. Some rely on conc gradients of other substances. Family 1 t ...
4-Calculate the Equilibrium Potential of Potassium, Sodium, and
... b. At 100mV Sodium ions flow out of the cell down their electrochemical gradient. c. This is an artifact caused by damage to the cell membrane when it is depolarized beyond about 80mV. d. At very strongly depolarized potentials, Sodium channels do not exhibit inactivation. ...
... b. At 100mV Sodium ions flow out of the cell down their electrochemical gradient. c. This is an artifact caused by damage to the cell membrane when it is depolarized beyond about 80mV. d. At very strongly depolarized potentials, Sodium channels do not exhibit inactivation. ...
Carrie Heath
... 10. What two factors influence the length constant as it relates to the cable properties of the passive flow of current along the axon? 11. Explain decremental conduction and define the length constant and the time constant. 12. What are the advantages for using the squid giant neuron for experiment ...
... 10. What two factors influence the length constant as it relates to the cable properties of the passive flow of current along the axon? 11. Explain decremental conduction and define the length constant and the time constant. 12. What are the advantages for using the squid giant neuron for experiment ...
OCR Document - MrsGorukhomework
... When a stimulus reaches threshold level, this will cause the neural membrane to become permeable to sodium ions. The voltage-gated sodium channels open up and Na+ can move into the cell. Na+ enters by facilitated diffusion and causes depolarization. Some Na+ ions drift over to the next part of the n ...
... When a stimulus reaches threshold level, this will cause the neural membrane to become permeable to sodium ions. The voltage-gated sodium channels open up and Na+ can move into the cell. Na+ enters by facilitated diffusion and causes depolarization. Some Na+ ions drift over to the next part of the n ...
Synapse - MBBS Students Club
... usually (not always) the Axon terminal. The axon terminals are also called the bouton terminaux or synaptic knob. The synaptic knobs have synaptic vesicles that contain the NT (neurotransmitters). The NT are produced in the body & conducted along the axon (anterograde flow). The NT can be inhibitory ...
... usually (not always) the Axon terminal. The axon terminals are also called the bouton terminaux or synaptic knob. The synaptic knobs have synaptic vesicles that contain the NT (neurotransmitters). The NT are produced in the body & conducted along the axon (anterograde flow). The NT can be inhibitory ...
Synapse
... usually (not always) the Axon terminal. The axon terminals are also called the bouton terminaux or synaptic knob. The synaptic knobs have synaptic vesicles that contain the NT (neurotransmitters). The NT are produced in the body & conducted along the axon (anterograde flow). The NT can be inhibitory ...
... usually (not always) the Axon terminal. The axon terminals are also called the bouton terminaux or synaptic knob. The synaptic knobs have synaptic vesicles that contain the NT (neurotransmitters). The NT are produced in the body & conducted along the axon (anterograde flow). The NT can be inhibitory ...
Electrochemical Impulses
... depolarization (this is the ‘firing’ of the neuron) 4. Once the inside of the neuron becomes positive, the Na+ gates close. 5. A Na+ - K+ pump in the cell membrane moves sodium out and potassium in, restoring the resting potential (called re-polarization) ...
... depolarization (this is the ‘firing’ of the neuron) 4. Once the inside of the neuron becomes positive, the Na+ gates close. 5. A Na+ - K+ pump in the cell membrane moves sodium out and potassium in, restoring the resting potential (called re-polarization) ...
Neuroplasticity
... – Voltage attenuation of EPSPs, EPSP to AP – Voltage attenuation and filtering of backpropagating AP • STDP (spike-timing dependent plasticity) ...
... – Voltage attenuation of EPSPs, EPSP to AP – Voltage attenuation and filtering of backpropagating AP • STDP (spike-timing dependent plasticity) ...
Madison Pejsa Pd.4
... Fourth is threshold, which once the stimulus goes above the threshold it opens up more ion channels and higher membrane potential Lastly is the refractory period when the Na and K return back to their sides ...
... Fourth is threshold, which once the stimulus goes above the threshold it opens up more ion channels and higher membrane potential Lastly is the refractory period when the Na and K return back to their sides ...
31.1 The Neuron
... your senses. In your notes write out the path it would take from outside the body and through the aspects of the nervous system. ...
... your senses. In your notes write out the path it would take from outside the body and through the aspects of the nervous system. ...
neurocytol_lect
... The neuron has the same biochemistry and complement of organelles as other cells of the body. ...
... The neuron has the same biochemistry and complement of organelles as other cells of the body. ...
Ch 3 Review
... The Nerve Impulse cont’d… Messages received from other neurons alter the resting potential. If the resting potential changes enough, the cell reaches its threshold, or trigger point, for firing. The threshold for human neurons is approx -50 ...
... The Nerve Impulse cont’d… Messages received from other neurons alter the resting potential. If the resting potential changes enough, the cell reaches its threshold, or trigger point, for firing. The threshold for human neurons is approx -50 ...
Nonsynaptic plasticity
Nonsynaptic plasticity is a form of neuroplasticity that involves modification of ion channel function in the axon, dendrites, and cell body that results in specific changes in the integration of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs). Nonsynaptic plasticity is a modification of the intrinsic excitability of the neuron. It interacts with synaptic plasticity, but it is considered a separate entity from synaptic plasticity. Intrinsic modification of the electrical properties of neurons plays a role in many aspects of plasticity from homeostatic plasticity to learning and memory itself. Nonsynaptic plasticity affects synaptic integration, subthreshold propagation, spike generation, and other fundamental mechanisms of neurons at the cellular level. These individual neuronal alterations can result in changes in higher brain function, especially learning and memory. However, as an emerging field in neuroscience, much of the knowledge about nonsynaptic plasticity is uncertain and still requires further investigation to better define its role in brain function and behavior.