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相关概念视频

Association Areas of the Cortex01:21

Association Areas of the Cortex

5.3K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
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Auditory Pathway01:15

Auditory Pathway

5.4K
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...
5.4K
Olfaction01:25

Olfaction

44.3K
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...
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Higher Mental Functions of the Brain: Language01:10

Higher Mental Functions of the Brain: Language

848
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
848
Lateralization01:28

Lateralization

335
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
335
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

3.8K
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....
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相关实验视频

Updated: Jul 4, 2025

Stereotactically-guided Ablation of the Rat Auditory Cortex, and Localization of the Lesion in the Brain
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在轨道前皮层的损伤后改变了层次性的听觉预测处理.

Olgerta Asko1, Alejandro Omar Blenkmann1, Sabine Liliana Leske2

  • 1RITMO Centre for Interdisciplinary Studies in Rhythm, Time and Motion, Department of Psychology, University of Oslo, Oslo, Norway.

eLife
|February 9, 2024
PubMed
概括
此摘要是机器生成的。

带有轨道前皮层 (OFC) 病变的患者在多个层面上显示出听觉预测违规行为的检测受损. 这表明OFC对于等级预测处理至关重要.

关键词:
这是一个EEGEEGEEGEEGEEGEEGEEG.关注注意力注意力注意力注意力听觉感知是一种听觉感知.大脑损伤 脑损伤人类 人类 人类 人类 人类 人类 人类脑膜瘤是指脑膜的一个部分.神经科学 神经科学预测 预测 预测 预测

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Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping
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Reversible Cooling-induced Deactivations to Study Cortical Contributions to Obstacle Memory in the Walking Cat
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相关实验视频

Last Updated: Jul 4, 2025

Stereotactically-guided Ablation of the Rat Auditory Cortex, and Localization of the Lesion in the Brain
09:29

Stereotactically-guided Ablation of the Rat Auditory Cortex, and Localization of the Lesion in the Brain

Published on: October 11, 2017

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Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping
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Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping

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Reversible Cooling-induced Deactivations to Study Cortical Contributions to Obstacle Memory in the Walking Cat
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科学领域:

  • 神经科学是一个神经科学.
  • 认知心理学 认知心理学

背景情况:

  • 轨道前皮层 (OFC) 传统上与抑制控制和情绪调节等执行功能有关.
  • 新兴研究表明,OFC的作用扩展到对感知事件,行为和结果的预测,支持层次预测处理.

研究的目的:

  • 调查OFC在检测跨两个层次抽象的预测违规行为中的作用.
  • 在局部-全球听觉奇怪任务期间,检查OFC病变患者和健康对照的事件相关潜力 (ERP).

主要方法:

  • 从12名OFC病变患者和14名健康对照中记录了与事件相关的潜力 (ERP).
  • 参与者在局部-全球范式中检测到偏差的音调序列,在局部 (序列内) 和全球 (序列之间) 层面操纵听觉规律.
  • 损伤特异性的评估是通过将OFC患者与具有侧面PFC病变的患者进行比较.

主要成果:

  • OFC患者对局部预测违规行为表现出减弱的不匹配负面性 (MMN) 和P3a反应.
  • 在OFC患者中,由于局部和全球预测违规的结合,观察到MMN减少,随后延迟P3a.
  • 与全球规则违规有关的P3b组件被保留在OFC集团中.
  • 改变的MMN/P3a反应是特定于OFC病变,而不是侧面PFC病变.

结论:

  • 对OFC的损伤对地方和全球等级层面的听觉规律违规行为的检测有重大影响.
  • 这些发现突出了OFC在听觉预测处理和层次规则抽象中的关键作用.
  • 在OFC患者中改变的ERP (MMN/P3a) 强调了预测违规检测受损的神经基础.