编码负预测错误的听觉皮层神经元会以可预测的序列响应遗漏的声音
Amit Yaron1, Tomoyo Shiramatsu-Isoguchi2, Felix B Kern1
1International Research Center for Neurointelligence (WPI-IRCN), UTIAS, The University of Tokyo, Tokyo, Japan.
PLoS biology
|June 18, 2025
概括
大脑使用预测错误信号. 这项研究确定了老鼠听觉皮层中编码负预测错误的特定神经元,这对于理解大脑如何从意外遗漏中学习至关重要.
科学领域:
- 神经科学是一个神经科学.
- 计算神经科学是一种神经科学.
背景情况:
- 预测编码理论表明,大脑预测感官输入,在现实偏离预期时产生预测错误.
- 负预测错误是当实际输入小于预测时的信号,可能与对遗漏刺激的反应有关.
- 这些遗漏反应所编码的精确信息及其神经元基础仍然不完全理解.
研究的目的:
- 在听觉皮层中识别和描述编码负预测错误的神经元.
- 调查遗漏反应在确认负预测错误信号传递中的作用.
- 探索预测错误不对称的基础计算机制和电路属性.
主要方法:
- 在听觉遗漏范式期间,在老鼠听觉皮层记录了单个单元的活动.
- 操纵语音概率,以系统地改变预测内容和证据积累.
- 开发了一种横向相互连接的预测错误神经元的电路模型,以模拟观察到的神经活动.
主要成果:
- 确定了神经元对遗漏的音调表现出强有力的反应,与可预测性和证据积累相关.
- 观察到神经元反应中的不对称性:选择性遗漏反应但广泛的语调反应.
- 证明了一个带侧连接的电路模型有质地复制了这种不对称性,并提高了预测编码效率.
结论:
- 响应听觉皮层缺失的神经元表现出负预测错误单位的特征.
- 提出了一个不对称的错误信号机制,可能由侧面相互连接的神经元介导.
- 预测错误电路中的侧面连接可以提高感官预测编码的精度和效率,符合自由能量原理.
更多相关视频
09:29Stereotactically-guided Ablation of the Rat Auditory Cortex, and Localization of the Lesion in the Brain
Published on: October 11, 2017
11.7K
06:21Author Spotlight: Understanding Processing of Olfactory and Spatial Information by Brain with Real-Time Behavioral Analysis
Published on: September 20, 2024
970
相关概念视频
Auditory Pathway
5.8K
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
5.8K
Hearing
53.1K
When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
53.1K
The Cochlea
46.0K
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
46.0K
Motor and Sensory Areas of the Cortex
4.8K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
4.8K
Olfaction
45.2K
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...
45.2K
Hair Cells
41.4K
Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
41.4K
