Introduction Flashcards
What is the definition of Psychophysiology?
Scientific study of psychological processes as related to and revealed through physiological principles
Based on the principles of:
Anatomy (structure) and Physiology (function)
What is the goal of Psychophysiology?
Better understand the relations and interactions between physiology and behavior
3 things about Psychophysiology:
Behavior is the result of ongoing mental processes
Behavioral is not always observable
Mental activities are not always translated into actions
Processes studied in Psychophysiology:
Examples?
Behaviors (human activities):
Learning, Problem solving, Attending, Sleeping, Emotional response
Physiological responses:
Brain (EEG, ERP, fMRI, PET)
Heart
Muscles
Skin
Heart
William Gilberd (1600)
Recognized difference between electricity and magnetism
What did William Gilberd propose?
That empirical observations and experiments should replace “probable guesses and opinions”
1800s Galvani and Volta
Demonstrated that nerves and muscles were electrically excitable
M/EEG:
Neural correlates
MEG
magnetic field from intracellular currents
EEG
Electrical potential difference (V) between 2 electrodes on the scalp from volume conduction of extracellular currents
Same underlying neuronal phenomenon but
M/EEG measure different aspects of it
What does M/EEG diagram show?
Magnetic field
MEG pick-up coil
Electrical potential difference (EEG)
Scalp
Skull
Cortex
Volume currents
History:
Polygraphic Newsletter (1955-1963)
First scientific periodical
History:
First scientific meeting
(1961)
History:
Society for Psychophysiological Research incorporated in
1963
First edition of the journal Psychophysiology(1964) was first titled
“The journal of objective research in physiology of behavior”
Applications of Psychophysiology
Biofeedback
Neurofeedback
What was used for EEG (picture)?
What does it show?
Biopac system
EEGartifactremoval.ACQ
After EOG removal, Before removal (2)
What does last diagram show?
Psychophysiologist at work
“Now I want you to relax completely!”
Shows how difficult it is to obtain accurate data for these kinds of experiments
