electroencephalography ( eeg ) is the technique that measures the electrical activity of brain cells directly.
electroencephalography ( eeg ) is the technique that measures the electrical activity of brain cells directly.
which technique measures the electrical activity of brain cells directly?
electroencephalography ( eeg )
electroencephalography (eeg) is a procedure that records electrical activity along the scalp. this procedure cannot record activity from individual neurons, but instead measures the overall average electrical activity in the brain.









































electrooculography (eog) measures the difference in electrical potential between the front and the back of the eye. this does not measure a response to individual visual stimuli, but instead measures general eye movement.









































electromyography (emg) is used to records the electrical activity of skeletal muscles. a device called an electromyograph measures the electrical potential of muscle cells to monitor muscle movement.
sleep and memory
one of the first scientists to theorize the existence of spontaneous cascades of electrical activity during retinal development was, computational neurobiologist david j. willshaw. he proposed that adjacent cells generate electrical activity in a wave-like formation through layers of interconnected pre-synaptic and postsynaptic cells. activity propagating through a close span of pre- and postsynaptic cells is thought to result in strong electrical activity in comparison to pre- and postsynaptic cells that are farther apart, which results in weaker activity. willshaw thought this difference in firing strength and location of cells was responsible for determining the activities boundaries. the lateral movement of firing from neighboring cell to neighboring cell, starting in one random area of cells and moving throughout both the pre- and postsynaptic layers, is thought to be responsible for the formation of the retinotopic map. to simulate the cascade of electrical activity, willshaw wrote a computer program to demonstrate the movement of electrical activity between pre- and postsynaptic cell layers. what willshaw called spontaneous patterned electrical activity is today referred to as retinal waves.
retinal waves