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American Focus > Blog > Health and Wellness > How Our Experiences Become Memories
Health and Wellness

How Our Experiences Become Memories

Last updated: November 17, 2024 7:45 am
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How Our Experiences Become Memories
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Memories are formed in a matter of seconds as the brain processes sensory inputs and creates dynamic neural networks known as engrams. These engrams are essential for storing and retrieving memories, such as navigating through a new city and finding a landmark. Engram formation relies on neurons firing simultaneously and in close succession, a process known as behavioral timescale learning.

Researchers at the Max Planck Florida Institute for Neuroscience have delved into how behavioral timescale learning integrates memories over several seconds. They discovered that when neurons activate, action potentials are generated, transmitting signals that encode new experiences. The hippocampus plays a crucial role in consolidating short-term memories into long-term memory through a process called long-term potentiation.

Long-term potentiation involves repeated firing of neurons, strengthening their connections and enhancing synaptic plasticity. This process leads to structural changes in synapses, making them more efficient at transmitting signals. The activation of CaMKII enzymes is pivotal in recruiting additional receptors to synapses, increasing sensitivity and strengthening connections between neurons.

The concept of “neurons that fire together wire together” has been expanded with the discovery of behavioral timescale learning, suggesting that neural connections can influence memory over broader time windows. In a study by Jain et. al, it was found that disrupting the function of CaMKII enzymes halted learning, indicating their importance in mediating behavioral timescale learning.

Surprisingly, the activation of CaMKII enzymes was delayed during the study, occurring tens of seconds after learning. This delayed activation influenced synaptic plasticity and signaling changes in dendrites, suggesting a larger mechanism at play in integrating repeated inputs. These findings shed light on how our brains consolidate information over time and may offer insights into memory disorders like Alzheimer’s disease.

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Understanding the underlying mechanisms of memory formation not only enhances our knowledge of learning but also holds potential for developing new strategies to combat memory-related disorders. The complexities of the brain’s processes remind us that there is still much to uncover in the realm of memory and cognition. So, the next time you struggle to recall something, remember that your brain is a marvel of intricate processes working tirelessly to store and retrieve memories.

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