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What are brain waves?
What are brain waves?
EEG is caused by brain activity,It's a wave-like signal.
Nerve cells in the brain,in response to external stimuliTransmits electrical signals and performs various processing.
For example, when recognizing an object from the eyes, stimulation is given to the brain from the eyes, and a part of the brainIt recognizes what it is as a result of the processing done in the nerve cells in
Thatin cellselectoronic signalsoccurrencethe process ofandoccurring at the same timeEEG.
EEG is 187FiveIn 2006, we successfully recorded from the brains of rabbits, dogs, and monkeys.It has been reported that brain waves are constantly fluctuating, and that they change with external light stimulation and exercise.
In 1890, it is expected that ``it will be possible to record the electric current generated in the human brain from the top of the skull.''
And finally in 1920, succeeded in measuring brain waves from the human scalp.At the time, there was suspicion that it was noise, but in 1930, the current electroencephalographThe data is comparable to the record by
In this way, electroencephalograms were generated from the human brain about 100 years ago, and research was being conducted on techniques for measuring them.
How are brain waves generated?
Let's take a closer look at how brain waves are generated.
There are many neurons in the brain. It is said that the human brain has 100-200 billion brain cells.
figure1shows the neuronal network in the brain.
nerve cellsCalled neurons, for example, stimuli such as sound and light (visual)from the outsideWhen they enter, they generate action potentials that transmit information to other neurons with electrical signals.
Simply put, neurons have dendrites, cell bodies,axonconsists of From dendrites, otherSeveralreceive electrical signals from cellsI will. Themelectrical signalbalanceand the threshold in that neurondetermines the activity state in the neuronincrease. in a neuronExceeding the threshold is called "firing",impulsivegenerate an action potentialvinegar. andthe signal passes through the synapse to the nextIt carries electrical signals to neurons.Generation of action potentials, transmission of electrical signalsEEG is generated along with
Utilization of EEG
Utilization of brain waves in the medical field
EEGby measuringAbout brain activityYou can see various things.
Epilepsy, sleep in the medical fieldIt is actually used for diagnosing failures, etc.As I mentioned at the beginning, electroencephalograms are generated in the process of transmitting electrical signals between nerve cells in the brain.In other words, by measuring brain waves, real-timebrain activitysituationofcan be monitored.
In diseases such as epilepsy, where symptoms appear in epilepsy, real-time measurement of brain activity is one of the effective means of treating injuries.It is considered.
Brain waves with characteristic frequencies that reveal the state of mind
In addition, it is said that the state of mind can be understood bybrain waves of variouscharacteristic frequencies such asalphawaves,betawaves,thetawaves,gammawaves, and delta waves.
The table shows each frequency band and, asan example,the state of the brain.
|
|
frequency |
situation |
|
alpha waves |
8-13Hz_ |
Relaxing/eyes closed |
|
beta wave |
14-30Hz |
active, active thinking, concentration 20Hz or more is in a state of tension |
|
theta wave |
4-7Hz |
Deep meditative state, drowsiness, etc. |
|
delta wave |
<4Hz |
slow wave sleep |
|
gamma wave |
30Hz< |
Excitement, Perception or Consciousness |
Each frequency band isa continuous brain wave that appears throughout the brain and is called a basal rhythm. The basal rhythm also changes with age. As shown in the table, when you are awake and your eyes are closed, alpha waves appear. In adults, brain waves with a frequency of about 10 Hz are generated, but in infants, brain waves with a frequency band of 6 to 8 Hz are generated.
In addition,throughrecent research, methods for analyzing variousmental states have been createdusing various information and conditions, such as the position of the head whereelectroencephalograms are measured.
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Would you like to actually measure brain waves?
What is the "skill transfer of experts" based on brain waves? What is AI that learns human consciousness and judgment?
I think there are a lot of unknown things, so why not try measuring your brain waves first and experience what it's like?
After the actual measurement, we will provide support from proposals to implementation and operation so that we can use AI using EEG at the customer's site while including examples of AI utilization in our activities so far. increase.
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Technology that utilizes brain waves
InnerEye is a solution that can create AI based on human recognition and judgment by making AI learn by utilizing the characteristics of brain waves. If you are interested in the details, please see below.
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