EE5904/EE5404 Neural Network 2014/1/16 EE5904/ME5404 Neural Networks Lecture 1 EE5904R/ME5404: Neural Networks Xiang Cheng Associate Professor Department of Electrical & Computer Engineering The National University of Singapore Phone: 65166210 Office: Block E4-08-07 Email: elexc@nus.edu.sg EE5904/ME5404 Neural Networks 1 Lecture 1 Lecturers •Dr. Xiang Cheng •Dr. Chen Chao Yu‚ Peter‚ Dept. of Mechanical Engineering‚ NUS Teaching Assistant •Ramesh Bharath Office:
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humans. `The brain is a complex organ that has a complex‚ but quick process of delivering the neurotransmitters to the receptors. Neurons communicate with each other by sending electrical signals‚ nerve impulses‚ through tube like structures called axons.
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molecules‚ their ligands; responsible for taste and smell. Also monitor internal environment‚ such as CO2 levels in blood. Olfaction is the sense of smell. Olfactory sensors are embedded in epithelial tissue at top of nasal cavity (in vertebrates). Axons extend to the olfactory bulb in the brain‚ dendrites end in olfactory hairs on the nasal epithelium. FIGURE 46.3 Olfactory Receptors Communicate Directly with the Brain Odorant—a molecule that binds to an olfactory receptor protein on the cilia of
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are necessary to stimulate different types of neurons. A neuron is made up of three basic parts: a cell body (soma) that contains the nucleus‚ dendrites‚ which are branches off the cell body that are there to receive impulses and signals and a long axon that carries impulses away from the body and on to surrounding neurons. The fluid inside a neuron is separated from that outside by a cell membrane that contains particles known as ions. When a neuron is stimulated a change in cell potential occurs
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What is an action potential? To put it simply‚ it is a message that is sent down the nervous line. The message is written and is sent from the central nervous system. That message is addressed to muscles or glands. This essay will explain what happens before‚ during‚ and after an interneuron action potential. To accurately define an action potential‚ it is part of the incredible course of events that occur during the firing of a neuron. When a neuron is not firing signals‚ the interior of the
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neurotransmitters‚ such as the dopamine‚ acetylcholine‚ gaba and glutamate. Plus‚ I will analyze their function‚ and evaluate their impact on physical and mental behavior. Neurotransmitters are stored in minute sac called vesicles located at the end of axons. When an impulse‚ reaches the
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In the following essay I will be looking at both sides of the debate of whether neuroscience replaced psychology in explaining behavior. To begin with we must firstly understand what exactly neuroscience is and what it entails. It is generally defined as the study of how the nervous system develops‚ its structure and the functions it carries out. Neuroscientists study the brain and how it impacts on human beings behavior and cognitive functions. The study also looks at what occurs when things don’t
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TOPIC OUTLINE I. Overview of Central Nervous System A. Architecture of the Cerebrum B. Components of the Cerebrum C. Building a Brain II. External Anatomy A. Frontal Lobe B. Parietal Lobe C. Temporal Lobe III. Internal Anatomy IV. Cross-Sectional Anatomy A. Cerebral White Matter B. Other Parts C. Clinical Correlations D. Additional Info Objectives: 1. Form: identify the different structures in the cerebrum a. Cerebral hemispheres b. External anatomy c. Lobes d. Fissures/sulci
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and support for the nerve cells. Glial cells that are mentioned in this and the following two lectures include: Oligodendrocytes‚ which create the myelin sheaths (electrical insulation) around axons in the central nervous system. Neurolemmocytes (Schwann cells)‚ which create the myelin sheaths around axons in the peripheral nervous system. Astrocytes‚ which control the extracellular environment of nerve cells‚ for example by removing “used” neurotransmitter molecules. The nerve cell membrane
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Study Guide for Quiz 1 What is gastrulation? What layers are formed during this process? The process in which a gastrula develops from a blastula by the inward migration of cells. Goes from one layer to three. Endoderm Mesoderm Ectoderm What is a chimera? a single organism that is composed of two or more different populations of genetically distinct cells that originate from different zygotes involved in sexual reproduction Understand the types of injuries/assaults an early embryo can
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