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The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. The HPA axis is part of the neuroendocrine system because it involves both neuronal and hormonal communication. Its function is to regulate homeostatic systems—metabolic, cardiovascular, and immune—providing the necessary means to respond to a stressor.
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相关实验视频

Updated: Jan 18, 2026

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重复的压力会降低在听觉皮层中的诺亚上腺素的动态范围.

Ekaterina Kaganovski1, Jennifer Resnik1

  • 1Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel; Zelman Center for Brain Science Research, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel.

Neuropharmacology
|September 8, 2025
PubMed
概括

重复的压力显著降低了听觉皮层中对大声响应的北上腺素 (NE) 反应. 这种慢性压力也会损害大脑的功能.

科学领域:

  • 神经科学是一个神经科学.
  • 审计处理 审计处理
  • 压力反应应激反应

背景情况:

  • 上腺素 (NE) 对于注意力,兴奋和应激反应至关重要.
  • 在听觉皮层中,NE调节神经处理和可塑性.
  • 重复的压力对听觉皮层中NE动态的影响尚不清楚.

研究的目的:

  • 研究重复性压力对听觉皮层中NE动态的影响.
  • 了解慢性压力如何改变NE对听觉刺激的反应.

主要方法:

  • 慢性双光子成像在头部固定小鼠.
  • 使用了基因编码的NE传感器GRAB_NE1m.
  • 在重复的压力条件下测量NE对高强度声音的反应.

主要成果:

  • 重复的压力明显减弱了对高强度声音的NE反应.
  • 随着长期的压力暴露,NE反应继续下降.
  • 消除了NE激活对重复响亮刺激的会话内习惯.

结论:

  • 重复的压力缩小了听觉皮层的诺亚上腺系统的动态范围和适应能力.

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  • 长时间的压力会损害NE动态,可能会降低听觉处理.
  • 研究结果提供了关于压力诱导的过度警和焦虑的见解.