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相关概念视频

Multiple Allele Traits01:49

Multiple Allele Traits

The Concept of Multiple Allelism
Polygenic Traits01:18

Polygenic Traits

When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
Pleiotropy01:33

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
Multiple Allele Traits01:49

Multiple Allele Traits

The Concept of Multiple Allelism
Self-Report Tests of Personality01:22

Self-Report Tests of Personality

Self-report inventories are objective personality assessments that use multiple-choice items or numbered scales, typically ranging from 1 (strongly disagree) to 5 (strongly agree). They are often called Likert scales after Rensis Likert. These inventories are widely used due to their ease of administration and cost-effectiveness. One of the most prominent examples is the Minnesota Multiphasic Personality Inventory (MMPI), initially developed in the 1940s to assess abnormal personality traits.
Dissociative Identity Disorder01:30

Dissociative Identity Disorder

Dissociative Identity Disorder (DID), previously termed multiple personality disorder, is a complex psychological condition characterized by the presence of two or more distinct identities or personality states. Each identity exhibits unique patterns of behavior, voice, and mannerisms and may possess separate memories and emotional responses. The alternating control between identities can result in memory gaps and challenges in recalling daily activities, often exacerbating the individual's...

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相关实验视频

Updated: Jul 9, 2026

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data
14:27

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Published on: June 26, 2013

功能性体征综合征:一个或多个?

S Wessely1, C Nimnuan, M Sharpe

  • 1Department of Psychological Medicine, Guy's, King's and St Thomas' School of Medicine, London, UK.

Lancet (London, England)
|September 18, 1999
PubMed
概括

像刺激性肠综合征这样的功能性体征综合征在症状和患者特征上有显著的重叠. 维度方法可能比目前对这些条件的定义更有效.

科学领域:

  • 医学科学 医学科学 医学科学
  • 精神病学是一个精神病学.
  • 胃肠病学 胃肠病学

背景情况:

  • 功能性体征综合征 (FSS) 是常见的,并存在诊断挑战.
  • 像刺激性肠综合征和慢性疲劳综合征这样的疾病通常被单独研究.

研究的目的:

  • 审查FSS的概念和重要性.
  • 评估不同FSS之间的重叠和相似之处.
  • 提出一个更有效的分类系统.

主要方法:

  • 功能性体征综合征的文献综述.
  • 分析病例定义,报告的症状和患者特征.
  • 综合征之间的相似性和差异的比较.

主要成果:

  • 在单个FSS之间存在显著的重叠.
  • 在病例定义,症状,患者人口统计和治疗反应方面发现了相似之处.
  • 综合征之间的差异不如相似之处明显.

结论:

  • 目前基于特定症状的FSS定义具有有限的价值.

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Last Updated: Jul 9, 2026

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07:35

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances

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Advancing Dyslexia Assessment in Children Through Computerized Testing

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  • 一个维度分类系统可能对了解和管理FSS更有生产力.
  • 认识到FSS的共同基本特征对于未来的研究和临床实践至关重要.