دانلود پاورپوینت General explaining about EEG
تعداد اسلاید18
نوع فایل پاورپوینت
First, the activity of one neuron is too small to be recorded. To be visible on the scalp, electrical activity must involve thousands of neurons acting synchronously. The neocortex has a high density of neurons, which facilitates their synchronous activation.
Second, it is not enough to act synchronously. Electrical activity is visible only if the activity of the underlying neurons adds up. To add up the activity must be generated by parallel neurons. The neocortex is composed of pyramidal cells aligned in parallel.
Third, the electric and magnetic field decrease with the distance from the source. The neocortex is closer to recording sensors.
