'Action potentials' presentation slideshows

Boğaziçi University SCIENCE 102 : Sensory Systems Yrd.Doç.Dr. Burak Güçlü Biomedical Engineering Institute. MECHANICAL SENSES. CHEMICAL SENSES. HEARING. VISION. CORTICAL MAPS. Key concepts: Sensory receptor, sense organ, adequate stimulus A classification of receptors:

The Auditory System. Dr. Kline FSU. What is the physical stimulus for audition?. Sound- vibrations of the molecules in a medium like air. The hearing spectrum for humans is approximately between 20 to 20,000 Hz. 3 basic physical properties of sound. 1. Amplitude: intensity of sound

Chapter 49. Table of Contents. Section 1 Neurons and Nerve Impulses. Section 1 Neurons and Nerve Impulses. Chapter 49. What is a neuron?. The scientific name for a nerve cell is made up of a cell body, dendrites, and axons.

What happens during an action potential?. 5.1.3 Neuronal Communication. Myelinated Neurones. How does the axon change?. Local Currents.

Introduction to Membrane Channels and Pumps. Ach receptor channel Patch-clamp techniques Ligand-gated and voltage gated channels Action potentials Neurotoxins Molecular structure of sodium channel Gap junctions Common features of membrane channels Active transport

LEARN THIS NOW: There are only a few ways to connect neurons. Here are the major ways to do it, with example functions. 1:1 (relay). e xception is auditory system…. Many:1 (IN SENSORY SYSTEMS – GAIN, IN PERCETUAL SYSTEMS – COMPLEXITY). 1:Many (arousal). Don’t You Just Love Neurons?.

Spike timing dependent plasticity. Homeostatic regulation of synaptic plasticity. 10. 10. mV. mV. Brief & large. Protein kinases. 1 sec. Ca 2+. Glutamate. Prolonged & moderate. Protein phosphatases. 100 msec. Current model of LTP and LTD. NMDA receptor. Synaptic protein.

Neuropsychology. Or Ion Channels, Action Potentials, and other “shocking” things about the brain (the most “current” information available!). The Neuron. Basic Unit of Neuropsychology Golgi Stain shows anatomy of neurons Nissl Stain shows number of neurons in a given area. The Neuron.

The Nerve Impulse. The Neuron at Rest. The plasma membrane of neurons contains many active Na-K-ATPase pumps. These pumps shuttle Na+ out of the neuron and K+ into the neuron when ATP is hydrolyzed. Three Na+ are pumped out of the neuron at a time and two K+ ions are pumped in.

Biomedical Instrumentation. Prof. Dr. Nizamettin AYDIN naydin @ yildiz .edu.tr naydin @ ieee.org http:// www.yildiz .edu.tr/~naydin. Course Details. Course Code : GBE 302 Course Name: Biomedical Instrumentation Instructor : Nizamettin AYDIN . Assesment. Method Quantity (%)

The Action Potential. The Resting Potential of the Neuron results from difference in ion distribution inside and outside of cell (-70mV). Forces Behind Resting Potential Selective Permeability - some molecules pass through membrane more freely than others; ion channels

Neural Conduction. Ch. 4. Outline. Measuring the Membrane Potential The Ionic Basis of Resting Membrane Potential Four Factors Determine the Ionic Distribution that Underlies the Resting Membrane Potential Postsynaptic Potentials Generation of Action Potentials

How is the Nervous System Organized?. Chapter 3-Neuroscience: The Brain and Behavior. Class Objectives:. Identify and define the structures of the neuron Identify and discuss the role of neurotransmitters on behavior. The Neuron.

Classes of Neurotransmitters. Acetylcholine Amino Acids aspartate glutamate GABA ( -aminobutyric acid: from glutamate) glycine. Classes of Neurotransmitters. Amines: derived from amino acids monoamines catecholamines (tyrosine derivatives) norepinephrine epinephrine dopamine

Chapter 39 Neural Signaling and Chapter 40 Neural Regulation. The Nervous System. Parts of a Neuron. Receive stimuli Produce and transmit electrical signals ( aka nerve impulses/action potentials) Synthesize and release neurotransmitters Draw neuron Many axons make nerve

Muscles &Muscle Tissue. Chapter 9. Function of Muscles. Movement Posture Stabilization of Joints Thermogenesis (heat production). Functional Characteristics of Muscle. Excitability (irritability) Can receive and respond to stimuli.

Cardiac Physiology. Dr. Meg- angela Christi Amores. The Heart. separate pumps: a right heart that pumps blood through the lungs, a left heart that pumps blood through the peripheral organs atrium and ventricle. The Heart. Cardiac muscle Striated Myofibrils with actin and myosin

PRINCIPLES OF PAIN MANAGEMENT & ANALGESIA. “ thERE IS NO COMING TO CONSCIOUSNESS WITHOUT PAIN.” -CARL JUNG. PRINCIPLES OF PAIN & ANALGESIA. WHAT IS PAIN? An unpleasant sensory or emotional experience associated with actual or potential tissue damage

0. Intra- neuronal Transmission (Electrical). What do you really need to know here?. The RMP is -70 mV, meaning that the cell is more negative inside than outside, And... That means that it is polarized, or ready and waiting to produce a neural signal.

How the Brain Works. Background: The Synapse. Release. Signal. Receptor binding. Receptors: Excitatory: Sends signals (action potentials) Inhibitory: Blocks signals Drugs, neurotransmitters, and other ligands : Agonists: Stimulate receptors, mimic the neurotransmitter