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Print this article - University of Toronto Journal of Undergraduate Life
Print this article - University of Toronto Journal of Undergraduate Life

... The treatment of Parkinson’s disease (PD) relies heavily on levodopa therapy. Although highly effective in ameliorating the debilitating symptoms of PD, levodopa treatment is largely associated with the development of abnormal involuntary movements. Several studies have suggested that these motor co ...
Nervous System
Nervous System

... of pleasure or fear, recognition of fear in others. • Hippocampus: formation of memories. ...
Nervous_System_Neurons
Nervous_System_Neurons

... messages go from one cell to the next ...
chapter29_Sections 6
chapter29_Sections 6

... • Action potentials occur only at nodes, where there are gated ion channels and no myelin • After an action potential occurs at a node, positive ions diffuse quickly through the cytoplasm to the next node because myelin prevents them from leaking out across the membrane • Arrival of positive ions at ...
Chapter 3
Chapter 3

... • (negative inside/positive outside) = resting potential • Neurons are selectively permeable (usually blocking POSITIVELY charged sodium ions until given the signal to fire • Depolarization occurs when neurons allow sodium ions inside causing neurological firing ...
File
File

... From AMA pub 9416 ...
to Psychology 3
to Psychology 3

... - glia cells exist throughout the nervous system and provide structural support and insulation for neurons - glia cells may supply nutrients, remove wastes, repair damage, or perform other non neural tasks for neurons 2. Neurons: The Communication Links - defined as "individual cells in the nervous ...
20-NervousSystem
20-NervousSystem

... Nerve impulses jump from node to node Multiple sclerosis and Tay-Sachs disease result from degeneration of the myelin sheath ...
Nervous System - Lemon Bay High School
Nervous System - Lemon Bay High School

... taste ...
PSYB1 Revision sheet Biopsychology JM09
PSYB1 Revision sheet Biopsychology JM09

... The function of a motor neuron is to carry information from the central nervous system to the muscles/glands/effectors, whereas the function of a sensory neuron is to carry information from the sense organs to the central nervous system. Synaptic Transmission ...
Information Processing SG
Information Processing SG

... The nervous system is like an information highway. It is responsible for controlling and coordinating all the functions and movements in the body and allows you to respond to changes in your environment The nervous system is made up of _____________ that are strings of long thin cells called _______ ...
Guided Notes
Guided Notes

... iv. Action potential (electrical signal) begins on ______________ neuron (or muscle or gland) v. NT quickly removed from synapse by _________________________ or _____________________________________ c. As you learn: i. Axon terminals widen so more NT can be released (more surface area) ii. Synaptic ...
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File

... What are the regions and functions of the cerebral cortex? ...
APP Ch_3 Outline
APP Ch_3 Outline

...  Action Potential – A very brief shift in a Neuron’s electrical charge that travels along an axon.  Absolute Refractory Period – Minimum length of time after an action potential during which another action potential cannot begin. Only about 1 or 2 Milliseconds.  All-Or-None Law – Neural Impulses ...
Slide () - AccessAnesthesiology
Slide () - AccessAnesthesiology

... direct pathway from the striatum to the SNpr and GPi express primarily the excitatory D1 DA receptor, whereas the striatal neurons that project to the GPe and form the indirect pathway express the inhibitory D2 dopamine receptor. Thus, loss of the dopaminergic input to the striatum has a differentia ...
Document
Document

... -_______________- _______________-, but _______________- _______________2. ______________- - hormones-proteins “chemical messengers” -______________- to _______________- but _______________- Lasting. * Through 1 & 2 – ______________- is maintained. Like a car on cruise control the body is constantly ...
Sensory function
Sensory function

... • Motor function. Once sensory information is integrated, the nervous system may elicit an appropriate motor response by activating effectors (muscles and glands) through cranial and spinal nerves. Stimulation of the effectors causes muscles to contract and glands to secrete. ...
Chp3 Weiten - Napa Valley College
Chp3 Weiten - Napa Valley College

... Two types of branches extend from the cell body: axons and ...
Small System of Neurons
Small System of Neurons

... The circuit contains 24 mechanoreceptor sensory neurons that innervate the siphon skin. These sensory neurons make direct monosynaptic connections with 6 gill motor cells. The sensory neurons also made indirect connection to the gill motor cells through interneurons (excitatory and inhibitory). This ...
Slide ()
Slide ()

... The hippocampal synaptic circuit is important for declarative memory. Information arrives in the hippocampus from entorhinal cortex through the perforant pathways, which provide both direct and indirect input to CA1 pyramidal neurons, the major output neurons of the hippocampus. (Arrows denote the d ...
Development of the Brain
Development of the Brain

...  Can the adult brain generate new neurons?  Olfactory cells must…. Why?  stem cells in the interior of the brain  scientists have observed new cells in hippocampus and cerebral cortex in monkeys of ages.  Possible meaning of new neural development? ...
Slide ()
Slide ()

... The hippocampal synaptic circuit is important for declarative memory. Information arrives in the hippocampus from entorhinal cortex through the perforant pathways, which provide both direct and indirect input to CA1 pyramidal neurons, the major output neurons of the hippocampus. (Arrows denote the d ...
1) Propagated electrical signals - UW Canvas
1) Propagated electrical signals - UW Canvas

... AFTER stimulus Hebb's synapse (1949) (food) ...
Synaptic Transmission
Synaptic Transmission

... message and can be inhibitory. When they bind to the post-synaptic neuron, they let potassium out instead of sodium in, which makes the neuron even more negative! ...
The Structures of the Brain
The Structures of the Brain

...  Each hemisphere appears to specialize in certain function ...
< 1 ... 275 276 277 278 279 280 281 282 283 ... 318 >

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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