电线不是领土:理解代表性漂移与动态系统理论的嗅觉关系
Ann-Sophie Barwich1,2, Gabriel J Severino1
1Cognitive Science Program, Indiana University.
Topics in cognitive science
|September 10, 2023
概括
代表性漂移,神经细胞反应的转变,在嗅觉的皮质皮质中是普遍存在的. 这种现象可能有助于动物适应不断变化的气味环境.
科学领域:
- 认知神经科学 认知神经科学
- 神经科学 神经科学 神经科学
- 嗅觉系统研究 嗅觉系统研究
背景情况:
- 代表性漂移,刺激反应神经细胞活动的逐渐改变,越来越多地在感官系统中被研究.
- 最近的研究突出显示,在皮质皮质 (piriform cortex) 中,代表性漂移的显著发生,皮质皮质是嗅觉至关重要的大脑区域.
研究的目的:
- 探索代表性漂移在嗅觉系统中的影响.
- 建议对嗅觉中的传统刺激-反应模型进行重新评估.
- 倡导动态系统理论作为理解嗅觉处理的框架.
主要方法:
- 对现有的关于感官皮层中表示漂移的文献的审查.
- 分析代表性漂移在皮质状皮质中的作用.
- 使用动态系统理论的概念框架开发.
主要成果:
- 代表性漂移是皮质状皮质中普遍存在的现象.
- 这种偏移对感官刺激-反应模型和决策产生了关键影响.
- 嗅觉中的非地形编码可能有助于在动态化学环境中的适应性行为.
结论:
- 在嗅觉中绘制刺激神经反应的传统模型需要重新评估.
- 嗅觉中的代表性漂移可能是生存的适应机制.
- 动态系统理论为理解嗅觉处理和表示漂移提供了一个有希望的框架.
相关概念视频
Physiology of Smell and Olfactory Pathway
8.6K
Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
The olfactory...
The olfactory...
8.6K
Olfaction
44.4K
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
The olfactory receptors are embedded in the cilia of the...
44.4K
Olfactory Receptors: Location and Structure
9.3K
The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
9.3K
Instinctive Drift
246
Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...
246


