No Slide Title
... - Sensory (chemical reactions) - Chemicals from other neurons - Chemicals from endocrine glands - Chemicals from outside sources (e.g., Drugs) ...
... - Sensory (chemical reactions) - Chemicals from other neurons - Chemicals from endocrine glands - Chemicals from outside sources (e.g., Drugs) ...
History of Psychology - Western Washington University
... • Do you think your brain today is the same as it was when you were born? Why or why not? ...
... • Do you think your brain today is the same as it was when you were born? Why or why not? ...
chapt12 neuron_lecture
... – temporal summation occurs when single synapse receives many EPSPs in a short period of time – spatial summation occurs when single synapse receives many EPSPs from many presynaptic cells ...
... – temporal summation occurs when single synapse receives many EPSPs in a short period of time – spatial summation occurs when single synapse receives many EPSPs from many presynaptic cells ...
Neuron Stations
... halves sticking out. Take the 2 halves and twist them together into a single extension. Axons send information received from the neuron to the next neuron in its path. Axons can be as long as 3 meters and information can travel as fast as 100 meters/second (224 miles/hour). Q3: What else can travel ...
... halves sticking out. Take the 2 halves and twist them together into a single extension. Axons send information received from the neuron to the next neuron in its path. Axons can be as long as 3 meters and information can travel as fast as 100 meters/second (224 miles/hour). Q3: What else can travel ...
Slide 1
... 1. Neurons are electrically active; They have a resting voltage, and can undergo electrical changes ...
... 1. Neurons are electrically active; They have a resting voltage, and can undergo electrical changes ...
Neurons and Neurotransmitters
... Action Potential: neural impulse or brief electrical charge that travels down an axon at speeds as fast as 200 mph. It happens when you feel something. “ALL OR NOTHING” response (like a gun firing). ...
... Action Potential: neural impulse or brief electrical charge that travels down an axon at speeds as fast as 200 mph. It happens when you feel something. “ALL OR NOTHING” response (like a gun firing). ...
ACTION POTENTIALS
... leaves the neruon at this point, due to the repelling polarity of positive sodium ions. After this the channels close, and the sodium pumps remove sodium ions from the membrane this repolarizes the membrane to a more negative charge than before the action potential. As potassium returns back into th ...
... leaves the neruon at this point, due to the repelling polarity of positive sodium ions. After this the channels close, and the sodium pumps remove sodium ions from the membrane this repolarizes the membrane to a more negative charge than before the action potential. As potassium returns back into th ...
Mod 07-Lecture - Phoenix Military Academy
... Neurotransmitters = chemical messengers sent from the vesicle sacs of the axon through the synaptic gap and bind to receptor sites in the dendrites of the receiving neuron, influencing its action potential. The sending neuron then reabsorbs excess NT molecules in a process called reuptake. NTs will ...
... Neurotransmitters = chemical messengers sent from the vesicle sacs of the axon through the synaptic gap and bind to receptor sites in the dendrites of the receiving neuron, influencing its action potential. The sending neuron then reabsorbs excess NT molecules in a process called reuptake. NTs will ...
Pipecleaner Neuron Guide - spectrUM Discovery Area
... • Dendrite–dendrites receive information from other neurons. The dendrites of one neuron may have between 8,000 and 150,000 contacts with other neurons. • Myelin sheath–myelin is a special type of cell that wraps around axons to insulate the information that is being sent and helps deliver it fast ...
... • Dendrite–dendrites receive information from other neurons. The dendrites of one neuron may have between 8,000 and 150,000 contacts with other neurons. • Myelin sheath–myelin is a special type of cell that wraps around axons to insulate the information that is being sent and helps deliver it fast ...
Neurons & the Nervous System
... Neural Impulse: electrochemical firing of a nerve cell • Action potential: when a neuron fires the impulse (sends the message) • Refractory period: phase after firing an impulse, neuron will not fire • All-or-none principle: neuron will fire or not fire, no in-between ...
... Neural Impulse: electrochemical firing of a nerve cell • Action potential: when a neuron fires the impulse (sends the message) • Refractory period: phase after firing an impulse, neuron will not fire • All-or-none principle: neuron will fire or not fire, no in-between ...
PNS Study Guide
... 5. What structures of the body make up the CNS and PNS? 6. What are the two functional classifications of the PNS? Describe the function of each (flow chart). 7. What are the 2 types of motor nerves? How are they different? 8. What are the 2 types of autonomic nerves? Make sure you know when they ar ...
... 5. What structures of the body make up the CNS and PNS? 6. What are the two functional classifications of the PNS? Describe the function of each (flow chart). 7. What are the 2 types of motor nerves? How are they different? 8. What are the 2 types of autonomic nerves? Make sure you know when they ar ...
File
... Overview of the Nervous System • STRUCTURES: brain, spinal cord, & peripheral nerves • FUNCTION: Recognizes and coordinates the body’s response to changes in its internal and external environments ...
... Overview of the Nervous System • STRUCTURES: brain, spinal cord, & peripheral nerves • FUNCTION: Recognizes and coordinates the body’s response to changes in its internal and external environments ...
The Nervous System - Ridgewood High School
... • Once stimulated, a neuron will communicate information about the causative event. – Such neurons are sensory neurons and they provide info about both the internal and external environments. – Sensory neurons (a.k.a. afferent neurons) will send info to neurons in the brain and spinal cord. There, a ...
... • Once stimulated, a neuron will communicate information about the causative event. – Such neurons are sensory neurons and they provide info about both the internal and external environments. – Sensory neurons (a.k.a. afferent neurons) will send info to neurons in the brain and spinal cord. There, a ...
Chapter 7: The Nervous System
... • Longevity: can live and function for a lifetime • Do not divide: fetal neurons lose their ability to undergo mitosis; neural stem cells are an exception • High metabolic rate: require abundant amounts of oxygen and glucose ...
... • Longevity: can live and function for a lifetime • Do not divide: fetal neurons lose their ability to undergo mitosis; neural stem cells are an exception • High metabolic rate: require abundant amounts of oxygen and glucose ...
Document
... A neuron can receive synaptic inputs from many other neurons (pyramidal neuron in cerebral cortex can have 1,000 synaptic inputs) ...
... A neuron can receive synaptic inputs from many other neurons (pyramidal neuron in cerebral cortex can have 1,000 synaptic inputs) ...
Study Guide for Chapter 7 - Neuron Function Be familiar with the
... bulbs, boutons, axon endings, synaptic knobs), bipolar neuron, blood-brain barrier, central nervous system (CNS), chemically-gated (ligand-gated) channel, dendrite, depolarization, efferent, electrochemical gradient, ependymal cell, equilibrium potential, excitatory postsynaptic potential (EPSP), ga ...
... bulbs, boutons, axon endings, synaptic knobs), bipolar neuron, blood-brain barrier, central nervous system (CNS), chemically-gated (ligand-gated) channel, dendrite, depolarization, efferent, electrochemical gradient, ependymal cell, equilibrium potential, excitatory postsynaptic potential (EPSP), ga ...
The Nervous System
... • Stimulus causes Na+ gates to open. • Na+ influx changes membrane potential. • If Na+ influx is great enough to achieve threshold potential (-50mV), then all Na+ gates open. • “All or none” phenomenon…at threshold, all gates will be opened (below threshold, no extra gates will open) and stimulus is ...
... • Stimulus causes Na+ gates to open. • Na+ influx changes membrane potential. • If Na+ influx is great enough to achieve threshold potential (-50mV), then all Na+ gates open. • “All or none” phenomenon…at threshold, all gates will be opened (below threshold, no extra gates will open) and stimulus is ...
Chap2
... Memory consists of a change in the structure of neurons that leads to increased likelihood of firing. Review of neural structure: ...
... Memory consists of a change in the structure of neurons that leads to increased likelihood of firing. Review of neural structure: ...
Nervous System
... - formed by gap junctions between cells **chemical synapses: use chemicals to transfer impulses when action potentials are not transmitted from one neuron to the next, directly…needs a “communicator” = neurotransmitter (NT) - Located in vesicles of neuron - Binds to receptor portion of gated chann ...
... - formed by gap junctions between cells **chemical synapses: use chemicals to transfer impulses when action potentials are not transmitted from one neuron to the next, directly…needs a “communicator” = neurotransmitter (NT) - Located in vesicles of neuron - Binds to receptor portion of gated chann ...
Lectures220Week7Note..
... 3. In this way, electrical signals continue to jump down the axon much faster than they can move down an unmyelinated cell. ...
... 3. In this way, electrical signals continue to jump down the axon much faster than they can move down an unmyelinated cell. ...
Neural-Ville
... 3. It may bind to the first cell's autoreceptors, which tell that cell not to release any more of the neurotransmitter molecules, then leave the autoreceptor and continue trying to bind again somewhere until its activity is ended by step 4, 5 or 6. ...
... 3. It may bind to the first cell's autoreceptors, which tell that cell not to release any more of the neurotransmitter molecules, then leave the autoreceptor and continue trying to bind again somewhere until its activity is ended by step 4, 5 or 6. ...
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.