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関連する概念動画

Drug Concentration Versus Time Correlation01:15

Drug Concentration Versus Time Correlation

2.2K
The plasma drug concentration-time curve is a crucial tool in pharmacokinetics, representing the drug's concentration in plasma at different time intervals post-administration. This curve illustrates the drug's journey from absorption into the systemic circulation, distribution to body tissues, and eventual elimination through excretion or biotransformation.
Two pivotal parameters are the minimum effective concentration (MEC) and the minimum toxic concentration (MTC). The MEC is the...
2.2K
First Pass Effect01:12

First Pass Effect

9.5K
Presystemic elimination, or the first-pass effect, is the metabolism of drugs that reduces their effective concentration at the site of action. Apart from the first-pass effect, the systemic bioavailability of the drug is also reduced by other factors, including incomplete absorption or chemical degradation of drugs.
Depending on the route of administration, drugs can be metabolized in the liver, intestine, lungs, and vasculature. Orally administered drugs are first absorbed through the...
9.5K
Correlations02:20

Correlations

36.4K
Correlation means that there is a relationship between two or more variables (such as ice cream consumption and crime), but this relationship does not necessarily imply cause and effect. When two variables are correlated, it simply means that as one variable changes, so does the other. We can measure correlation by calculating a statistic known as a correlation coefficient. A correlation coefficient is a number from -1 to +1 that indicates the strength and direction of the relationship between...
36.4K
Correlation and Causation01:27

Correlation and Causation

42.8K
Statistical tests can calculate whether there is a relationship, or correlation, between independent and dependent variables. An indirect relationship of the variables signifies a correlation, while a direct relationship shows causation. If it is determined that no connection exists between the variables, then the correlation is a coincidence.
Correlation versus Causation
If the dependent variable increases or decreases when the independent variable increases, there is a positive or negative...
42.8K
Anxiety: Overview01:18

Anxiety: Overview

1.1K
Anxiety is a common mental disorder featuring excessive worry, fear, and apprehension, significantly affecting daily life. People with anxiety disorders experience persistent and intense anxiety, interrupting their everyday functioning.
Individuals with anxiety often experience a range of physical and emotional symptoms, including sweating, trembling, tachycardia, and disturbances in sleep patterns. These symptoms vary in intensity and frequency but are generally disruptive and distressing.
1.1K
Generalized Anxiety Disorder01:30

Generalized Anxiety Disorder

731
Generalized Anxiety Disorder (GAD) is a chronic condition characterized by excessive and uncontrollable worry that persists for at least six months, significantly interfering with daily functioning. Unlike situational anxiety, which arises in response to specific stressors, GAD often occurs without a clear cause. Individuals may experience disproportionate worry about work, health, or relationships. For instance, a person might continuously fear poor health despite normal medical evaluations or...
731

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関連する実験動画

Updated: Feb 8, 2026

Reducing State Anxiety Using Working Memory Maintenance
08:17

Reducing State Anxiety Using Working Memory Maintenance

Published on: July 19, 2017

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不安は時間経過を速める：神経相関

I Sarigiannidis1, K Kieslich1, C Grillon2

  • 1UCL Institute of Cognitive Neuroscience, University College London, London, UK.

Social cognitive and affective neuroscience
|February 7, 2026
PubMed
まとめ

不安は、特に中帯状皮質において神経認知資源を過負荷にすることで時間知覚を速める。この脳領域は、不安が時間感覚にどのように影響するかを媒介する可能性がある。

キーワード:
不安帯状皮質fMRIショックの脅威時間知覚

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Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety
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Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety

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Real-time Video Projection in an MRI for Characterization of Neural Correlates Associated with Mirror Therapy for Phantom Limb Pain
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関連する実験動画

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