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Related Concept Videos

Working Memory01:24

Working Memory

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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...
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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...
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The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
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Higher Mental Functions of Brain: Learning and Memory01:26

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Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
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Functional Brain Systems: Limbic System01:15

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The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
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Functional Brain Systems: Reticular Formation01:13

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The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
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Controlling brain dynamics: Landscape and transition path for working memory.

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Researchers mapped the brain's energy landscape to understand working memory. They found that modulating brain connectivity, especially in prefrontal areas, can control cognitive states and improve working memory performance.

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Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Cognitive Science

Background:

  • Understanding brain dynamics and control is key in brain science.
  • The energy landscape and transition path approach offers a framework for studying brain mechanisms.
  • Working memory serves as a model system for investigating cognitive functions.

Purpose of the Study:

  • To quantify the energy landscape of working memory using a large-scale macaque model.
  • To investigate how task demands alter the brain's landscape and induce state switching.
  • To propose and demonstrate a landscape control approach for manipulating brain states.

Main Methods:

  • Quantification of the working memory energy landscape in a large-scale macaque model.
  • Analysis of kinetic transition paths to understand information flow.
  • Modulation of external stimulation and inter-areal connectivity to control brain state transitions.

Main Results:

  • Working memory function is associated with landscape changes and brain-wide state switching.
  • Information flow along kinetic transition paths follows the brain's hierarchical structure.
  • Modulating associative areas, particularly prefrontal and parietal cortex, impacts working memory.

Conclusions:

  • The study provides insights into the dynamical mechanisms of cognitive function.
  • The proposed landscape control approach can manipulate brain state transitions.
  • This approach has potential applications in developing therapeutic strategies for brain disorders.