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相关概念视频

Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

247
The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH...
247
The Menstrual Cycle01:19

The Menstrual Cycle

618
The menstrual cycle is a recurrent sequence of changes in the uterine endometrium, specifically its functional layer, the stratum functionalis. This cycle prepares the uterus for potential pregnancy. This cycle typically spans 21–35 days, averaging 28 days, and aligns with the ovarian cycle, regulated by fluctuating levels of ovarian hormones, primarily estrogen and progesterone.
The menstrual phase occurs from days 1 to 5 and involves the shedding of the stratum functionalis, as a...
618
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists01:30

Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists

87
Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function.
87
Information Processing Approach01:30

Information Processing Approach

23
The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is...
23
Menopause01:28

Menopause

110
Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
110
Language and Cognition01:27

Language and Cognition

302
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
302

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相关实验视频

Updated: May 21, 2025

Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm
07:26

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月经周期对认知表现的影响:一个元分析.

Daisung Jang1, Jack Zhang2, Hillary Anger Elfenbein3

  • 1Melbourne Business School, The University of Melbourne, Melbourne, Victoria, Australia.

PloS one
|March 17, 2025
PubMed
概括

妇女的认知表现在整个月经周期中没有显著变化. 一项元分析发现,没有强有力的证据支持注意力,执行功能或其他能力的循环相关认知转变的神话.

科学领域:

  • 神经科学是一个神经科学.
  • 心理学 心理学 心理学
  • 妇女健康 妇女健康

背景情况:

  • 月经经常受到关于其对女性认知能力的影响的神话的影响.
  • 以前的经验研究已经产生了不一致的发现,需要进行定量总结.
  • 对整个月经周期的认知表现缺乏全面的元分析.

研究的目的:

  • 为了对整个月经周期的认知表现进行元分析.
  • 研究特定认知领域的潜在变化,包括注意力,创造力,执行功能,智力,运动功能,空间能力和语言能力.
  • 量化总结现有研究,解决有关月经周期对认知的影响的知识差距.

主要方法:

  • 对102篇文章进行了元分析,涉及3,943名参与者和730个比较.
  • 认知表现在月经周期的特定时间被评估,使用具有客观正确反应的任务.
  • 赫奇斯的g被用作效果大小指标来检查周期阶段的性能差异.

主要成果:

  • 没有发现有系统的,强有力的证据表明,经历月经周期的认知表现有显著的变化.
  • 虽然一些空间能力差异显得显著,但它们没有得到循环阶段确定强大的方法的支持.
  • 单独分析速度和准确度的测量结果也显示,周期阶段之间没有明显的差异.

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Assessment of Age-related Changes in Cognitive Functions Using EmoCogMeter, a Novel Tablet-computer Based Approach
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相关实验视频

Last Updated: May 21, 2025

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Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm

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结论:

  • 目前的研究并不支持女性的认知能力随月经周期而显著波动的观点.
  • 未来的研究应该采用更大的样本大小和月经周期的标准化定义,包括荷尔蒙指标.
  • 这一元分析提供了一个定量总结,揭穿了关于月经周期相关认知变化的常见神话.