What part of the brain helps with working memory?
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| This suggests strongly that working memory comprises a pool of domain-general attentional resources at the central level. | |
| These results suggest that the two anatomical pathways serve different functional roles for working memory. | |
| Overall, the findings demonstrate that working memory is best characterized as a highly interrelated collection of cognitive functions. |
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What is the role of the working memory?5 answersWorking memory is a mental workspace that allows for the maintenance and manipulation of temporary information to support goal-directed behavior. It plays a critical role in various cognitive processes such as language learning, planning, problem-solving, and decision-making. Working memory is composed of distinct components responsible for attention-like control and short-term storage. These components interact with long-term memory, perception, and action, although the nature of their subdivision and interrelationships is still under investigation. Working memory has a limited capacity, which imposes constraints on cognitive activities. It is involved in the processing and integration of information retrieved from long-term memory, supporting mental operations rather than mere remembering. Working memory is also crucial for reading, particularly for phonological short-term memory and verbal working memory, which are essential for various reading processes and text comprehension.
What are the brain regions involved in working memory?5 answersWorking memory is a dynamic process that involves multiple brain regions. The hippocampus, sensory and motor regions, prefrontal and parietal cortex, frontal pole, middle frontal gyrus, frontal eye field, superior parietal lobule, insular, precuneus, and anterior cingulate cortex are all implicated in working memory processes. Additionally, the frontal-parietal network (FPN) and default mode network (DMN) play a crucial role in executive functions such as working memory. These networks exhibit dynamic configurations and transitions during working memory tasks, with different brain states characterized by the engagement and disengagement of FPN and DMN nodes. Furthermore, the maintenance of working memory relies on a network of excitatory and inhibitory neurons, aided by neuromodulatory influences of dopamine. In the tactile modality, posterior and parietal cortices, premotor regions, and primary somatosensory cortex (SI) are involved in retaining and representing tactile working memory.
When working memory is used?4 answersWorking memory is used in a wide range of activities, including language learning, planning, problem-solving, decision-making, comprehension, production of language, and acquisition of language. It is a capacity that enables us to maintain and manipulate temporary information in the service of goal-directed behavior. Working memory comprises distinct components responsible for attention-like control and short-term storage. It is a general resource that allows attention to be allocated to any type of information and stimulus input. Additionally, working memory includes the maintenance and manipulation of uncertainty associated with a memory, which is used implicitly in subsequent decisions. These findings challenge existing computational models of working memory to update their frameworks to represent uncertainty.
How does posterior parietal cortex is involved in working memory?5 answersThe posterior parietal cortex (PPC) is involved in working memory (WM) by supporting complex tasks and tracking WM ability. Neuroimaging studies have shown that the PPC plays an important role in spatial WM and hand movement preparation. It has been found that stimulating the right PPC with repeated transcranial direct current stimulation (tDCS) can enhance WM performance, specifically improving response speed in spatial tasks. Additionally, repeated parietal intermittent theta-burst stimulation (iTBS) has been shown to increase neural activity related to WM storage in the left hemisphere. Furthermore, studies in cats have revealed that area 5 in the PPC is involved in retaining information about obstacles in WM, which is crucial for successful obstacle negotiation. Overall, these findings suggest that the PPC is involved in various aspects of WM, including spatial processing, motor context, and obstacle representation.
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