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...  The arrival of an action potential at an axon’s terminal triggers the release of NEUROTRANSMITTERS- chemicals that transmit information from one neuron to another  Collected together in little sacks called SYNAPTIC VESICLES  Vesicles fuse together with the membrane and spill contents into the sy ...
An Investigation into the Role of Cortical Synaptic Depression in
An Investigation into the Role of Cortical Synaptic Depression in

... depleted, the probe tone could therefore be masked by the ‘sub-threshold’ masker. The Effect of Masker Duration : In psychophysical experiments it has been shown that the degree of masking is affected by the duration of the masker and masking increases with masker duration (Kidd and Feth, 1982). Thi ...
Electrophysiology applications 1
Electrophysiology applications 1

... automated pneumatic pressure instead of electrical current is used to eject drug from the tip. This method is often necessary to apply large or uncharged molecules (e.g., large peptides) that do not readily move with iontophoresis. It is possible to configure the pipette so that both iontophoresis a ...
Sleep Brain Labelling
Sleep Brain Labelling

... - where the hormone melatonin is produced - Melatonin helps regulate the circadian clock - melatonin is stimulated by darkness ...
lab 8: central nervous system
lab 8: central nervous system

... Label the multipolar neuron in the space below with the following: dendrites, axon, axon hillock, myelin sheath (Schwann cell), Nodes of Ranvier (myelin sheath gaps), cell body, nucleus, terminal arborizations (telodendria), synaptic knobs (terminal boutons). ...
Somatic Sensory System
Somatic Sensory System

... • Varies 20 fold throughout body • Fingertips have highest resolution – Due to high density of mechanoreceptors – Receptor subtypes with small receptive fields – More cortical neurons dedicated to deciphering sensory information ...
Health MIDTERM Study Guide
Health MIDTERM Study Guide

... Answer: The point of the teeth lab was to find out what drink makes teeth decay faster. This is useful knowledge because one should make wise choices and brush their teeth and floss every day. Also, it was to find out if the surroundings of something had an effect on it. That answer is yes because i ...
Peripheral Nervous System
Peripheral Nervous System

... There is only one axon attached to each neuron. Both axons and dendrites are called nerve fibers. Nerve fibers are wrapped together like a rope that is made of many thin strings and covered in connective tissue and called a nerve. ...
Document
Document

... all the neurons it will ever have • In the 4th month of prenatal development, axons begin to form myelin, which helps to speed transmission ...
2_Neuro-Bio_Review
2_Neuro-Bio_Review

... 1. Neurons have specialized projections called dendrites and axons. Dendrites bring information to the cell body and axons take information away from the cell body. 2. Neurons communicate with each other through an electrochemical process. 3. Neurons form specialized connections called "synapses" an ...
Click here to a word document of this Fact
Click here to a word document of this Fact

... With a homonymous hemianopia half of the visual field in both eyes is lost. Depending on the exact location of the damage to the visual pathways, different amounts of vision may be affected with different names (relative hemianopia, quadrantinopia, incongruent hemianopia), however functional changes ...
Visual pathways cortical and sub
Visual pathways cortical and sub

... Specialised cells and brain areas for recognition of specific category of objects (as reviewed in Lectures 1&2) e.g. face cells in the ventral stream ...
ILGA_overview_11-16-09
ILGA_overview_11-16-09

...  reciprocally connected with area F5 (Matelli et al., 1985;  mortor dominant neurons (40%) discharge equally well if the grasping movement is made either in the light, or in the dark. These cells are referred to as (Taira et al., 1990). – 50% of neurons fired almost exclusively during one type of ...
neural control of respiration
neural control of respiration

... excitatory impulses to the muscles of respiration, the intercostal muscles and the diaphragm. This voluntary system can interrupt or modulate the normal automatic breathing pattern; it is most apparent during speech and while playing wind instruments, where the lungs serve as air reservoirs to be em ...
Chapter 11: Fundamentals of the Nervous System and Nervous Tissue
Chapter 11: Fundamentals of the Nervous System and Nervous Tissue

... ______5. A major subdivision of the nervous system that interprets incoming information and issues orders. ______6. A major subdivision of the nervous system that serves as the communication lines, linking all parts of the body to the CNS. 3. This exercise emphasizes the difference between neurons a ...
Glia Ç more than just brain glue
Glia Ç more than just brain glue

... and Schwann cells also induce synapse formation between neurons. It is not clear how such glial signals act: do they provide a permissive environment for synapse formation at sites predetermined by neurons, or do they actively instruct neurons where to form synapses? As mentioned previously, microgl ...
Beyond Spikes: Neural Codes and the Chemical Vocabulary of
Beyond Spikes: Neural Codes and the Chemical Vocabulary of

... expressed via transcription factors assembled and activated in response to the cascade [39]. ...
Introduction to Brain Structure - Center for Behavioral Neuroscience
Introduction to Brain Structure - Center for Behavioral Neuroscience

... cerebellum than a dog and thus is much more coordinated than the dog and can perform stunts like landing on their feet. (For dog lovers out there, be sure to compare their cortical convolutions and one could argue the dog is more intelligent). Another feature that is easily seen on the brain is the ...
Reduction III: Mechanistic Reduction
Reduction III: Mechanistic Reduction

... or 24 hours after an initial one eradicated the learning associated with the first shock Similar effects produced by a protein synthesis inhibitor Also possible to enhance memory after recall with electrical stimulation of the mesencephalic reticular formation (same as effect if applied during learn ...
MECHANISMS OF VERTEBRATE SYNAPTOGENESIS
MECHANISMS OF VERTEBRATE SYNAPTOGENESIS

... neuronal circuitry. For example, shortly after neurons differentiate and extend axonal and dendritic processes, many of the genes encoding synaptic proteins are turned on, resulting in the formation, accumulation, and directional trafficking of vesicles carrying pre- and postsynaptic protein complexe ...
weiten6_PPT03
weiten6_PPT03

... tiny wet battery with a resting potential of about –70 millivolts. (b) When a neuron is stimulated, a sharp jump in its electric potential occurs, resulting in a spike on the oscilloscope recording of the neuron’s electrical activity. This change in voltage, called an action potential, travels along ...
Neurons and Neurotransmitters
Neurons and Neurotransmitters

... • Our study begins with bottom up processing: processing that begins with the nerve cells and goes up to the brain. ...
NEURAL REGULATION OF RESPIRATION LEARNING
NEURAL REGULATION OF RESPIRATION LEARNING

... system allow pain and emotions to affect respiration .e.g. in gasping, laughing and crying. ...
Topic 14 - Center for Complex Systems and Brain Sciences
Topic 14 - Center for Complex Systems and Brain Sciences

... MT (motion-processing area of visual cortex). He also discovered that careful alteration of the response rate of those same neurons by microstimulation could change the animals performance on a perceptual task toward making the correct decision. The implication is that conscious processing can be al ...
Lecture Slides - Austin Community College
Lecture Slides - Austin Community College

... The human body contains billions of neurons Basic structural unit of the nervous system • Specialized cells conduct electrical impulses along the plasma membrane • Nerve impulses are called action potentials Other special characteristics • Longevity – can live and function for a lifetime • Do not di ...
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Activity-dependent plasticity

A defining feature of the brain is its capacity to undergo changes based on activity-dependent functions, also called activity-dependent plasticity. Its ability to remodel itself forms the basis of the brain’s capacity to retain memories, improve motor function, and enhance comprehension and speech amongst other things. It is this trait to retain and form memories that is functionally linked to plasticity and therefore many of the functions individuals perform on a daily basis. This plasticity is the result of changed gene expression that occurs because of organized cellular mechanisms.The brain’s ability to adapt toward active functions has allowed humans to specialize in specific processes based on relative use and activity. For example, a right-handed person may perform any movement poorly with his/her left hand but continuous practice with the less dominant hand can make both hands just as able. Another example is if someone was born with a neurological disorder such as autism or had a stroke that resulted in a disorder, then they are capable of retrieving much of their lost function by practicing and “rewiring” the brain in order to incorporate these lost manners. Thanks to the pioneers within this field, many of these advances have become available to most people and many more will continue to arrive as new features of plasticity are discovered.
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