Neurons normally transmit a neural impulse (an electric current) along an axon to a synapse with another neuron. The neural impulse is a brief change in neuron’s electrical charge that moves along an axon. It is an all-or-none event. Action potential triggers the release of chemicals called neurotransmitters that diffuse across the synapse to communicate with other neurons. Transmitters bind with receptors in the postsynaptic cell membrane‚ causing excitatory or inhibitory PSPs. Most neurons
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DETECTION OF EYE MOVEMENTS USING ELECTROOCULOGRAPHY A Graduate Project Report submitted to Manipal University in partial fulfilment of the requirement for the award of the degree of BACHELOR OF ENGINEERING In Electronics and Communication Engineering Submitted by Rajesh Sunkara Reg. No: 090907193 Under the guidance of Ms. Shruthi.K Assistant Professor DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING MANIPAL INSTITUTE OF TECHNOLOGY (A Constituent College of Manipal University)
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Nervous System II: Anatomy Review 1. The somatic nervous system stimulates ____________ muscle. The autonomic nervous system stimulates ___________ muscle‚ ____________ muscle‚ and ___________. 2. The autonomic nervous system (ANS) consists of two divisions‚ each innervating the effector organs. The sympathetic nervous system (SNS) generally speeds up everything except digestion. The parasympathetic nervous system (PNS) generally slows down everything but digestion.
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into the synaptic gap reaches the target cell by You correctly answered: b. diffusion. 5. At the target‚ neurotransmitter You correctly answered: d. does all of the above. 02/14/14 Predict Question 1: You have just observed that each action potential in a burst can trigger additional neurotransmitter release. If calcium ions are removed from the extracellular solution‚ what will happen to neurotransmitter release at the axon terminal? Your answer : d. There will be no neurotransmitter release
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1. Which of the following is NOT true regarding the EPP? A. The EPP is a graded potential needed to reach threshold B. The EPP is the direct result of voltage-gated Na+ channels opening C. The EPP occurs in the post-synaptic membrane and is not an action potential D. To generate an EPP‚ ACh acts as the neurotransmitter involved in skeletal muscle contraction E. Two of the choices above are NOT true. 2. A person is being treated at a local clinic with an acetyl cholinesterase
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Hair cells for hearing and equilibrium 2. Gustatory receptor cells for taste 3. Photoreceptors for vision h. Generator Potential: when free nerve endings‚ encapsulated nerve endings and olfactory receptors reach threshold ‚ triggers one or more impulses in the 1st order sensory neuron. i. Receptor Potentials: created by separate cells j. Receptor cells that are grouped based on their location vii. Exteroreceptors: located at or near the surface
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THE CENTRAL NERVOUS SYSTEM Every behavior begins with biology. Our behaviors‚ as well as our thoughts and feelings‚ are produced by the actions of our brains‚ nerves‚ muscles‚ and glands. In this chapter we will begin our journey into the world of psychology by considering the biological makeup of the human being‚ including the most remarkable of human organs—the brain. We’ll consider the structure of the brain and also the methods that psychologists use to study the brain and to understand how it
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Answer: D 7. Which of the following neurotransmitters functions to relieve pain sensations? a. beta-endorphin b. acetylcholine c. epinephrine d. dopamine Answer: A 8. What is the correct sequence of these events that follow a threshold potential? 1. The membrane becomes depolarized. 2. Sodium channels open and sodium ions diffuse inward.
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Essay 3 Shubham Tyagi How do our sensory systems work? Write about taste‚ sight‚ hearing and touch. Introduction Sensory systems are important to us; they let us perceive the environment. The senses can be broadly divided in to the sense of touch‚ smell‚ taste‚ vision and hearing. The seemingly simple perception is in fact not as simple as it sounds there is a lot of chemistry
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uestion : You are at a basketball game and the arena is packed; the crowd is evenly split between fans of the two teams. At one point‚ the referee makes a call. Half of the fans yell insults; the other half of the fans shout their approval. The event reminds you of the topic of today’s lecture in psychology class. What was the likely topic of the lecture? Student Answer: bias experiments psychoanalysis extraneous variables Instructor Explanation: Chapter 1
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