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System of Memory01:23

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Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
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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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Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
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Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual...
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Repressed memories are a psychological phenomenon where memories of traumatic events are unconsciously blocked from a person's awareness. This process occurs as a defense mechanism, protecting the mind from the emotional impact of distressing or painful experiences. For example, a person who has experienced childhood trauma may grow up with no conscious recollection of the event. In such cases, the memories are thought to be buried deep within the subconscious, inaccessible to the conscious...
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Shape Memory Polymers for Active Cell Culture
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The rhythm of memory: how breathing shapes memory function.

Detlef H Heck1, Robert Kozma2,3, Leslie M Kay4

  • 1Department of Anatomy and Neurobiology, University of Tennessee Health Science Center.

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|June 20, 2019
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Summary
This summary is machine-generated.

Breathing influences brain activity and memory. Nasal respiration modulates neuronal rhythms in the hippocampus and prefrontal cortex, impacting cognitive functions like memory recall.

Keywords:
cognitioncortical oscillationsmemoryolfactory bulbrespiratory rhythm

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Respiratory Physiology

Background:

  • The mammalian olfactory bulb has a respiratory rhythm linked to the sniff cycle.
  • Respiratory frequencies overlap with the hippocampal θ-rhythm, crucial for memory.
  • Recent studies show nasal respiration influences neuronal activity across the brain.

Purpose of the Study:

  • To review recent findings linking respiration to memory modulation in rodents and humans.
  • To explore the neurophysiological mechanisms underlying respiration's effect on memory.
  • To highlight the influence of respiration on key memory structures like the hippocampus and prefrontal cortex.

Main Methods:

  • Review of recent electrophysiological studies in rodents and humans.
  • Analysis of human subject studies linking nasal respiration to memory processes.
  • Examination of neurophysiological data on respiratory influence on brain oscillations.

Main Results:

  • Nasal respiration influences neuronal activity cycle-by-cycle in various brain regions, including the prefrontal cortex and hippocampus.
  • Respiratory phase impacts high-frequency oscillations (e.g., γ-rhythms) and hippocampal sharp wave ripples, affecting attention and memory.
  • Studies in humans confirm a link between nasal respiration and memory processes.

Conclusions:

  • Respiration plays a significant role in modulating cognitive functions, particularly memory.
  • Neuronal influence of respiration on the hippocampus and prefrontal cortex provides a mechanism for memory modulation.
  • Further research is warranted to fully elucidate the complex interplay between respiration and cognition.