Release date: 2012-09-25
According to a recent report by discover magazine, several neuroscientists reported in the online edition of Nature Neuroscience that they implanted artificial memory in rat brain slices. The researchers used the current to stimulate the brain cells of rodents, causing them to produce some memory-like nerve cell activities that exist for about 10 seconds. This is the first time a researcher has created a memory without a brain.
The researchers created these memories on the slices of the hippocampus. The hippocampus is a region of the brain that is associated with short-term memory-memory—when people recall an address, or recall what your boss is doing with a tie today, rely on this type of memory. The researchers stimulated four different locations on the brain slice and then reported the response of three different cells on the slice to the current stimulus. Each stimulus produces a unique and sustained response. When the four stimuli appear in a different order, the neuronal cells respond differently, indicating that the neuronal cells can receive more complex stimuli.
The duration of these artificial memories is very short. When this period of time elapses, the response of neuronal cells to the four stimuli becomes more and more similar; after 15 seconds, the response of the neuronal cells to the four stimuli becomes completely identical.
“This is the first time someone has discovered a way to store information about temporary consequences and stimuli directly in the brain for a few seconds,†neuroscientist Ben Strowbridge, who participated in the study, said at a news conference. . “This research paves the way for future research and helps researchers determine which brain circuit is what makes us short-term memory.â€
The researchers hope that understanding the formation mechanism of short-term memory in isolated organizations becomes the first step in a series of studies, and on this basis, we can continue to understand how memory is formed in a larger, more complex network of living brains. Understand what happens to memory in animals with neurological diseases.
Data supplement The hippocampus, also known as the hippocampus, hippocampus or brain hippocampus, is the name of a part of the cerebral palsy. A person has two hippocampus, which are located in the left and right hemispheres. It is part of the brain's limbic system and acts as a memory and spatial orientation. The curved shape of the name derived from this part looks like a hippocampus. The hippocampus belongs to the oldest part of the evolution of the brain. The hippocampus from the old cortex is particularly evident in psins and cetaceans in marine life. Relative to the development of new cortex, the important role of hippocampal growth in primates is to make their brain capacity increase significantly.
The function of the hippocampus is the main memory of the human being in the near future. It is a bit like the memory of a computer. It keeps the memory in a few weeks or months for quick access. Short-term memory in daily life is stored in the hippocampus. If a memory segment, such as a phone number or a person is repeatedly mentioned in a short period of time, the hippocampus will transfer it to the cerebral cortex and become a permanent memory. Therefore, people with more developed hippocampus will have a stronger memory. If the information stored in the hippocampus is not used for a period of time, it will be "deleted" by itself, that is, it will be forgotten. The information stored in the cerebral cortex is not permanently stored. If the information is not used for a long time, the cerebral cortex may "delete" this information. Some people have lost some or all of their memory after being injured in the hippocampus. It all depends on the severity of the injury, that is, whether the hippocampus is partially lost or completely lost.
Source: Sina Technology
Waterproof Wound Dressing,Rectangle Big Wound Dressing,Waterproof Adhesive Wound Dressing,Medical Fixation Wound Dressing
Surgimed Medical Supplies Co.,Ltd , https://www.surgimedcn.com