EEG Flashcards
Who is the inventor of the electroencephalography (EEG)?
Hans Berger
What does the electro physiological recoding based on?
Volume conduction theory
What is the record of spontaneous brain activity?
EEG
How can the spread of ionic currents within the extracellular fluid be measured?
Electrodes on skin
What is used as an assessment of brainstem and auditory function?
BAER
What is a cell found in the cerebral cortex that is a projection of neurons to other parts of the CNS or to different regions of the cerebral cortex?
Pyramidal cells
Pyramidal cells are generally _________
Excitatory
What cells found in the cerebral cortex are local-circuit interneurons within the cortex?
Stellate cells
Stellate cells can be either ________ or __________
excitatory or inhibitory
What are changes in voltage recorded as in EEG?
Deflections
Voltage change in a positive direction= recorded deflection is ______
Down
Voltage change in a negative direction= recorded deflection is ______
Up
What EEG waves are:
Rhythmical waves
Frequency between 8-13 cycles/sec
High amplitude
Alpha
What EEG waves are observed in healthy adults in a quiet resting state and disappear during sleep?
Alpha
What EEG waves are:
Asynchronous
Higher frequency- 14-80
Lower amplitude
Beta
