We read stuffs like novels, newspaper, magazine, textbooks e.t.c. Despite the fact that we read right from our Nursery, we are capable of memorizing most of those things we read and even events that happened before then.
I was about sleeping one night and i remembered an event that happened when i was about 2years old. I laughed and suddenly asked myself; "how on earth was i able to keep that thing all this while i my little head?"
I decided to embark on a journey into the world of science of bring out facts and proofs from experiment that has been conducted and i came up with this article. I do hope that you have a good time while reading through.
Scientists at UCLA (University of California, Los Angeles) and the Weizmann Institute of Science, Israel have discovered the process
through which memories are made and then recalled. These scientists have recorded that How individual brain cells calls up a memory?, thus revealing where in the brain a specific memory is stored and how the brain is able to recreate it.
I was about sleeping one night and i remembered an event that happened when i was about 2years old. I laughed and suddenly asked myself; "how on earth was i able to keep that thing all this while i my little head?"
I decided to embark on a journey into the world of science of bring out facts and proofs from experiment that has been conducted and i came up with this article. I do hope that you have a good time while reading through.
Scientists at UCLA (University of California, Los Angeles) and the Weizmann Institute of Science, Israel have discovered the process
through which memories are made and then recalled. These scientists have recorded that How individual brain cells calls up a memory?, thus revealing where in the brain a specific memory is stored and how the brain is able to recreate it.
Dr. Itzhak Fried, Senior Study Suthor and a UCLA Professor of Neurosurgery with his colleagues recorded the activity of hundreds of individual neurons making memories in the brains of 13 epilepsy patients being treated surgically at UCLA Medical Center.
Surgeons at UCLA Medical Center placed electrodes in the patients' brains to locate the origin of their seizures before surgical treatment which is a standard procedure in such cases. Dr. Fried used same ele.ctrodes to record the neuron activity as memories were being formed.
During the experiment patients were shown several video clips of short duration, including such things as landmarks and people, along with other clips of Jerry Seinfeld, Tom Cruise, "Simpsons" character Homer Simpson and others. As the patients watched these clips, researchers recorded the activity of many neurons in the Hippocampus and a nearby region known the Entorhinal Cortex that responded strongly to individual clips.
Few minutes after watching these clips, the patients were asked to recall whatever clips came to mind. During this recalling process these patients were not prompted to recall any specific clips," but to use "free recall' which means, whatever popped into their heads.
At this point researchers found that the same neurons that had responded earlier to a specific clip fired strongly a second or two before the subject reported recalling that clip. These neurons did not fire, however,when other clips were recalled. By observing this researchers found that which clip a patient was recalling before the patient announced it.
During this experiment Dr. Fried noted that the single neurons that were recorded as they fired were not acting alone but were part of a much larger memory circuit of hundreds of thousands of cells caught in the act of responding to the clips.
This research is significant in the fact that it confirms for the first time that spontaneous memories arise through the activity of the very same neurons that fired when the memory was first being made. This link between reactivation of neurons in the Hippocampus and conscious recall of past experience has been suspected and theorized for sometime, but the study now provides direct evidence for this.
So we can say that, Reliving past experience in our memory is the resurrection of neuronal activity from the past.
Source: Squidoo.
Few minutes after watching these clips, the patients were asked to recall whatever clips came to mind. During this recalling process these patients were not prompted to recall any specific clips," but to use "free recall' which means, whatever popped into their heads.
At this point researchers found that the same neurons that had responded earlier to a specific clip fired strongly a second or two before the subject reported recalling that clip. These neurons did not fire, however,when other clips were recalled. By observing this researchers found that which clip a patient was recalling before the patient announced it.
During this experiment Dr. Fried noted that the single neurons that were recorded as they fired were not acting alone but were part of a much larger memory circuit of hundreds of thousands of cells caught in the act of responding to the clips.
This research is significant in the fact that it confirms for the first time that spontaneous memories arise through the activity of the very same neurons that fired when the memory was first being made. This link between reactivation of neurons in the Hippocampus and conscious recall of past experience has been suspected and theorized for sometime, but the study now provides direct evidence for this.
So we can say that, Reliving past experience in our memory is the resurrection of neuronal activity from the past.
Source: Squidoo.
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