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相关概念视频

Working Memory01:24

Working Memory

966
Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
966
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

2.8K
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
2.8K
Sensory Modalities01:15

Sensory Modalities

4.0K
Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
4.0K
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

7.8K
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....
7.8K
Somatosensation01:33

Somatosensation

43.7K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
43.7K
Sensory Memory01:14

Sensory Memory

734
Sensory memory captures information from the environment in its original form for a very brief duration, just long enough to be exposed to visual, auditory, and other senses. This type of memory is detailed and rich but quickly lost unless certain strategies are employed to transfer it into short-term or long-term memory. Sensory information is continuously bombarding the human brain, yet only a small fraction is absorbed, as most of it does not significantly impact daily life. For instance,...
734

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相关实验视频

Updated: Feb 17, 2026

Cross-Modal Multivariate Pattern Analysis
13:51

Cross-Modal Multivariate Pattern Analysis

Published on: November 9, 2011

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在皮质工作记忆表示中,感觉模式和负载依赖的变化跨越皮质工作记忆表示.

Vivien Chopurian1,2, Simon Weber2,3, Thomas B Christophel1,2

  • 1Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany.

Imaging neuroscience (Cambridge, Mass.)
|February 16, 2026
PubMed
概括
此摘要是机器生成的。

在工作记忆 (WM) 中保持多个项目会影响神经表征. 视觉负载增加会降低回忆性能和视觉皮层忠实度,而前部区域显示强大但不那么精确的存储.

关键词:
MVPA MVPA是什么意思容量 容量 容量 容量 容量功能磁力共振成像 (fMRI) 是一种工作记忆 工作记忆

更多相关视频

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
09:05

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)

Published on: June 12, 2017

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Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

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相关实验视频

Last Updated: Feb 17, 2026

Cross-Modal Multivariate Pattern Analysis
13:51

Cross-Modal Multivariate Pattern Analysis

Published on: November 9, 2011

20.5K
Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
09:05

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)

Published on: June 12, 2017

30.9K
Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

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科学领域:

  • 认知神经科学 认知神经科学
  • 神经成像是一种神经成像.
  • 工作记忆研究 工作记忆研究

背景情况:

  • 已知分布式皮质区域代表工作记忆 (WM) 内容.
  • 这些区域对于记忆维护的必要性,特别是在不同的负载下,仍然是有争议的.

研究的目的:

  • 为了研究如何维护多个项目影响神经信息在皮层区域.
  • 检查感觉模式和视觉负载对工作记忆表示的差异影响.

主要方法:

  • 功能性磁共振成像 (fMRI) 实验与81名参与者.
  • 参与者在13.8秒内记住了两个项目 (定向或投球).
  • 操纵感官模式以改变视觉负载,同时保持整体WM负载恒定.

主要成果:

  • 在视觉,头顶和额头区域发现了重要的方向信息.
  • 增加的视觉负载减少了视觉皮层中的行为回忆和定向特定信息.
  • 周围的区域显示出早期延迟效应,而正面的表征仍然不受负载的影响.

结论:

  • 视觉皮层分享了代表信息的劳动,增加负载降低了表示忠诚度.
  • 前皮层区域强大地表示多个项目,但精度降低.
  • 多维素模式分析表明,随着负载的增加,记忆力信息表示的下降.