PPT-Action Potentials DR QAZI

OBJECTIVES Define the action potential Describe the changes during action potential Discuss conduction propagation of action potential Describe recording of monophasic. Introduction These Guidelines are limited to the neurologic ap plications of short latency auditory evoked poten tials ie to the use of these responses to detect and approximately localize dysfunctions of the auditory pathways within the auditory ne Learning Objectives. To understand what factors affect the speed of conductance of an action potential.. To understand what the ‘refractory period’ is.. To understand what the role of the refractory period is in separating one impulse from the next.. Voltaic Cells. In spontaneous oxidation-reduction (redox) reactions, electrons are transferred and energy is released.. © . 2009, Prentice-Hall, Inc.. Voltaic Cells. We can use that energy to do work if we make the electrons flow through an external device.. ANSWER: via the endocrine and nervous systems. Why is it important for us to understand how cellular . c. ommunication works?. The Nervous . S. ystem: Parts & Pieces. Two cell types in the NS: 10% Neurons & 90% . . E. . = . -. f. . . . Scalar Potential . f . and Electrostatic Field . E. . .  . x . E. = -. ∂. B. /. ∂. t . Faraday’s Law.  x -. . f . = 0 ≠ . -. ∂. B. /. ∂. t . The Most Beneficent The Most Merciful. 1. ECE 4552:. Medical Electronics . Lecture:. Electro . Encephalo. Gram. . Engr. . Ijlal. . Haider. Electrical Engineering Dept.. University of Lahore, Lahore. presynaptic ending – . portion of the . axon . conveying information to the next neuron. . Some terms…….. presynaptic ending – . the portion of the axon that is conveying information to the next neuron. . Introduction to Geophysics. The Self Potential Method. (or Spontaneous Potential). “The ugly duckling of environmental geophysics”. Nyquist. & Corry, 2002. Self Potential Method. Passive geophysical method (like gravity/magnetics). Why are thermodynamic potentials useful. Consider U=U(T,V). Complete knowledge. of equilibrium properties of a simple thermodynamic. System . requires in addition. P=P(T,V). equation of state. U=U(T,V) and P=P(T,V). in Austria. 02 June 2015 // Gerald Kalt. Biomass Policies . workshop: . Lessons . learned and policy challenges . in a mature bioenergy . market. , . Vienna, 2 June 2015. Comparison. . with. . current. LL2 Section 63. Lienard-Wiechert. are the retarded potentials of a point charge. Potentials at the field point are determined by the state of motion at the earlier time . t’. , where . t. = “now”.. Miss Tagore. Year 13 Biology. Lesson Starter. In the resting phase of an action potential, what type of protein in the cell membrane is active?. The sodium potassium pump.. (Sodium channels are closed as are the majority of potassium channels). HONORS ANATOMY & PHYSIOLOGY. Key terms. action potential. : A short-term change in the electrical potential that travels along a cell (such as a nerve or muscle fiber); the basis of neural communication. Steven Kolaczkowski. Time Independent Schrödinger Equation (TISE) and the Infinite Potential Well. Free Particle solution: if . , then our original harmonic wave solutions works and we can say . . You can verify that this will get us .