• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
creutzfeldt-jakob disease
creutzfeldt-jakob disease

... takes a different folded shape than the normal protein. With time, the disease-causing PrPSc can accumulate and aggregate to the levels that result in brain tissue damage, neuronal death and development of CJD5. Prion diseases in humans occur in three general forms: sporadic or spontaneous, genetic ...
Skeletal Muscle Function Deficits in the Elderly: Current
Skeletal Muscle Function Deficits in the Elderly: Current

... in the elderly. Traditional definitions of sarcopenia focused on the size of human skeletal muscle. However, increasing evidence in older adults suggests that low muscle mass is associated with weakness, and weakness is strongly associated with function and disability. In recent years a global trend ...
Generation of Rapid Eye Movements during Paradoxical Sleep in
Generation of Rapid Eye Movements during Paradoxical Sleep in

... PGO waves are prominent phasic bioelectrical potentials which occur in isolation or in bursts during the transition from slow wave sleep (SWS) to PS or during PS itself (for reviews, see Callaway et al., 1987; Datta, 1999a); they constitute one of the distinguishing features of PS. Although observed ...
292(1):94-106
292(1):94-106

... In order to examine the phenotypes of brain morphology mutants, we first analyzed initial brain morphogenesis of each mutant between 17 and 36 hpf using brightfield microscopy (Table 1; data not shown). One criterion for calling each mutant a ‘‘brain morphology’’ mutant is that it makes a healthy ne ...
Questions - rlsmart.net
Questions - rlsmart.net

... Serotonin is a chemical released at one type of synapse in the brain. When serotonin is released, you get feelings of pleasure. Pleasure is an important response for survival. For example, eating nice-tasting food gives you a feeling of pleasure. So you are more likely to repeat eating, which is ess ...
THE ART AND SCIENCE OF AMPLIFICATION: SUCCESSFUL LIVING WITH HEARING LOSS
THE ART AND SCIENCE OF AMPLIFICATION: SUCCESSFUL LIVING WITH HEARING LOSS

... • Hearing instruments are expensive, which can be a barrier ...
Krasnow Institute for Advanced Studies -- George
Krasnow Institute for Advanced Studies -- George

... Krasnow Institute for Advanced Studies -- George Mason University ...
20-Limbic
20-Limbic

... important role on the mediation and control of major affective activities like friendship, love and affection, on the expression of mood and, mainly, on fear, anger and violent behavior. The amygdala, being the center for identification of danger. When triggered, it gives rise to fear and anxiety wh ...
The triune organism – an abstract
The triune organism – an abstract

... triune organism. This is on the other hand a deep pattern, which connects phenomena from a wide array of subjects, like anatomy, physiology, molecular biology, systematics, ecology and evolution. To say that this pattern “connects” these phenomena means that it provides a context, which gives them ...
behavior?
behavior?

... about 10 to 1) and to merely provide support functions for them, such as providing nutrients The Neurons Involved in a Reflex When you touch a hot stove, neurons and removing wastes. However, both of these assumptions have recently been called into in your fingertips send information doubt. Some res ...
Abstract - Fresno State
Abstract - Fresno State

... prospect of caring for an aging parent. After all, at the beginning of the 20th century, life expectancy at birth was just 47 years (U.S. Census Bureau, 2005), and only 1 in every 25 Americans could be considered elderly (i.e., 65 or older). Since then, life expectancies have risen to 76 years at bi ...
Failure to mobilize cognitive control for
Failure to mobilize cognitive control for

... neuroimaging the dACC, DLPFC and VLPFC all show greater activation for antisaccades than for prosaccades (Dyckman et al., 2007; Matsuda et al., 2004; McDowell et al., 2008). This body of work establishes the dACC, DLPFC and VLPFC as key anatomical components of the cognitive control network for voli ...
Temporary inhibition of AMPA receptors induces a prolonged improvement
Temporary inhibition of AMPA receptors induces a prolonged improvement

... The Cln3-knockout (Cln3Dex1e6) mouse model of JNCL exhibits many characteristic features of the human disorder, including a deficit in cerebellar motor coordination (Kovacs et al., 2006; Mitchison et al., 1999; Weimer et al., 2009). Exploring the possible cause(s) of the functional impairment of the ...
The honeybee as a model for understanding the basis of cognition
The honeybee as a model for understanding the basis of cognition

... inflexible and stereotypical. Indeed, they live in colonies and exhibit complex social, navigational and communication behaviours, as well as a relatively rich cognitive repertoire. Because these relatively complex behaviours are controlled by a brain consisting of only 1 million or so neurons, hone ...
View Article
View Article

... Even so, implants that work well in one brain may fail in another. “Nobody quite understands exactly why signals deteriorate, and the rate at which they deteriorate seems to be wildly unpredictable,” says Gerald Loeb, a biomedical engineer at the University of Southern California. “Some animals will ...
The Discovery of the Reward Pathway
The Discovery of the Reward Pathway

... neurotransmitter dopamine has been determined in these experiments because scientists can measure an increased release of dopamine in the reward pathway after the rat receives the reward. Also, if the dopamine release is prevented (either with a drug or by destroying the pathway), the rat won't pres ...
Motor pathways
Motor pathways

... had been a football player at college, and since that time, he continued to take an active part in the game until he was 42 years old. Physical examination revealed weakness, wasting, and fasciculation of the right deltoid and biceps brachii muscles. The right biceps tendon reflex was absent. Radiol ...
Basic principles of attention and decision
Basic principles of attention and decision

... Fritz et al., 2003. Nature Neuroscience ...
S - 7473-2390-3942 Accountability in United States
S - 7473-2390-3942 Accountability in United States

... morphology of the fetal hippocampus if released during its development. By administering varying amounts of dexamethasone into pregnant animal models, and thereafter assessing their hippocampus volumes and functioning, Coe et al, 2003 demonstrated marked decline in the number of neurons in the hippo ...
The effect of lithium on the adrenoceptor
The effect of lithium on the adrenoceptor

... Objective: Lithium remains the most widely used treatment for bipolar disorder; however, the molecular mechanisms underlying its therapeutic actions have not been fully elucidated. We studied the in-vivo effect of lithium on the density of α-adrenoceptor (α-AR) and β-AR subtypes and linked second me ...
Matching mind to world and vice versa: Functional dissociations
Matching mind to world and vice versa: Functional dissociations

... relative to congruent intentional states. To this end, sentences containing scenarios were presented to participants and their task was to make judgments concerning the ascription of intentional states based on this information. Belief ascriptions, relative to desire ascriptions, were accompanied by ...
A novel seven-octapeptide repeat insertion in the prion protein
A novel seven-octapeptide repeat insertion in the prion protein

... progressive cerebellar syndrome, accompanied by extrapyramidal and pyramidal signs and cognitive decline, which may evolve into severe dementia [8]. Neuropathological features associated with GSS disease vary substantially, but always include multicentric amyloid plaques in the cerebellum with or wi ...
Evolution of Nervous Systems and Brains
Evolution of Nervous Systems and Brains

... gochaetes, the first segments of the ventral nerve cord are often fused into a subesophageal ganglion. In the oligochaetes, we find a modest, and in hirudineans a massive simplification of this basic organization. Within the ventral nerve cord of most oligochaetes and some polychaetes there are gian ...
Symbolic Reasoning in Spiking Neurons:
Symbolic Reasoning in Spiking Neurons:

... from a particular letter, and answering questions using working memory. For each of these tasks we use exactly the same neural model; the only differences are the sensory inputs to the system. Finally, we provide two conclusions that connect cognitive theory and neuroscience. First, we show that par ...
Neurons and Synapses
Neurons and Synapses

... receive messages carried by the neurotransmitter ...
< 1 ... 115 116 117 118 119 120 121 122 123 ... 353 >

Aging brain

Age is a major risk factor for most common neurodegenerative diseases, including Mild cognitive impairment, Alzheimer's disease, cerebrovascular disease, Parkinson's disease and Lou Gehrig's disease. While much research has focused on diseases of aging, there are few informative studies on the molecular biology of the aging brain (usually spelled ageing brain in British English) in the absence of neurodegenerative disease or the neuropsychological profile of healthy older adults. However, research does suggest that the aging process is associated with several structural, chemical, and functional changes in the brain as well as a host of neurocognitive changes. Recent reports in model organisms suggest that as organisms age, there are distinct changes in the expression of genes at the single neuron level. This page is devoted to reviewing the changes associated with healthy aging.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report