在工作记忆优先级设置期间维护和转换表示格式
Daniel Pacheco-Estefan1, Marie-Christin Fellner2, Lukas Kunz3
1Department of Neuropsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, 44801, Bochum, Germany. Daniel.PachecoEstefan@ruhr-uni-bochum.de.
Nature communications
|September 19, 2024
概括
视觉工作记忆 (VWM) 中的执行控制使用不同的神经代码来优先考虑内容. 深度神经网络揭示了前额叶皮和腹部视觉流如何代表优先级信息.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 计算神经科学是一种神经科学.
背景情况:
- 视觉工作记忆 (VWM) 依赖于腹部视觉流 (VVS) 维持刺激和前额叶皮质 (PFC) 执行控制.
- 执行控制优先考虑VWM内容的确切机制及其对代表格式的影响仍然不清楚.
研究的目的:
- 通过使用内EEG (iEEG) 记录来研究优先级VWM内容的表示格式.
- 探索深度神经网络 (DNN) 架构如何在优先级VWM期间在VVS和PFC中建模神经表示.
主要方法:
- 在VVS和PFC中使用电极的患者的iEEG数据的分析,这些数据是在多项VWM任务中使用VVS和PFC进行的.
- 使用各种DNN架构来描述神经表征的表示相似性分析 (RSA) 的应用.
主要成果:
- 在回应后的贝塔频段 (15-29 Hz) 中的反复DNN表示与PFC表示相匹配.
- 在维护期结束时,在较低频段 (3-14 Hz) 的DNN表示与VVS表示相对应.
结论:
- 优先考虑的VWM内容在VVS和PFC中呈现不同.
- 不同的编码方案和表示格式被VVS和PFC用于优先级信息,如DNN所示.
相关概念视频
Working Memory
145
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...
145
Storage
79
A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
79
Elaborative Rehearsals
83
Elaborative rehearsal is a crucial cognitive strategy that strengthens information encoding in long-term memory by making meaningful connections between new data and pre-existing knowledge. This approach contrasts with maintenance rehearsal, which involves simple repetition without delving into the significance of the information. While maintenance rehearsal might temporarily keep information active in short-term memory, it is less effective for long-term retention.
The effectiveness of...
The effectiveness of...
83
Chunking and Rehearsal in Sensory Memory
177
Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of...
177
High-Level and Low-Level Awareness
252
Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
252
Encoding
144
Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...
144


