重复的 nociceptive 刺激引起 Hirudo 复杂的行为变化:证据表明兴奋和动机适应

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Use of the Operant Orofacial Pain Assessment Device OPAD to Measure Changes in Nociceptive Behavior

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Jessica Hoynoski¹, John Dohn¹, Avery D Franzen¹

¹Division of Basic Biomedical Sciences, Center for Brain and Behavioral Research (CBBRe), Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA.

The Journal of experimental biology

|July 27, 2023

概括

吸血虫 (Hirudo verbana) 已经习惯了针刺,但也发展了躲藏或爬行等逃避行为. 以前的伤害加快和强化了这些防御反应.

科学领域:

神经科学是一个神经科学.
动物行为动物行为
伦理学伦理学伦理学

背景情况:

感知,或感知有害的刺激,对于动物的生存至关重要.
戒断反射是对有害刺激的主要保护性反应.
习惯,减少对重复刺激的反应,是学习的基本形式.

研究的目的:

为了研究药用吸血虫 (Hirudo verbana) 对机械感知刺激的戒断反应的习惯性.
为了确定先前的伤害是否会影响习惯和戒断对 nociception 的反应.
描述防御行为及其因受伤而发生的调节.

主要方法:

重复应用机械感知刺激 (针刺) 给 Hirudo 语言.
对戒断反应 (缩短) 和逃避行为 (隐藏,移动) 的观察和量化.
简单的吸血虫和以前受伤的吸血虫之间的反应比较.

主要成果:

重复的针刺导致习惯缩短反射在hirudo verbana.
一组次要的逃避行为,包括躲藏和爬行,在刺激过程中出现.
之前的伤害显著减少了逃避开始的时间,并增加了运动器逃避的频率.

结论:

希鲁多语言表现出复杂的,适应性的防御性兴奋过程,以避免有害的刺激.
这种防御反应是由内部状态,先前的伤害和潜在的学习来调节的.
这些发现表明无脊椎动物的复杂防御策略超出了简单的习惯.

关键词:

激发性唤起性唤起性没有脊椎动物无脊椎动物李奇 (Leech) 是一个鱼.没有感觉,没有感觉.疼痛疼痛疼痛疼痛敏感化敏感化

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相关概念视频

Nociception

Nociception

Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain. Thus, pain helps the...