01:830:338 Chapter Notes - Chapter 7: Eysenck Personality Questionnaire, Reticular Formation, Sensation Seeking
17 May 2016
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Most obtained by electrodes or sensors placed on the skin surface. Electrodermal activity (eda) due to increased sweat with arousal, skin conductance of electricity increases. Can measure responses to various stimuli, including sudden noises, emotionally charged pictures, pain, anxiety, fear, guilt. Some people show eda in the absence of external stimuli associated with anxiety and neuroticism. Heart rate increases with anxiety, fear, arousal, cognitive effort. Cardiac reactivity greater than normal increase in blood pressure and heart rate when performing task such as backward serial subtraction. Associated with type a personality impatience, competitiveness, hostility. Cardiac reactivity (and type a) associated with coronary heart disease. Brain spontaneously produces small amounts of electrical activity; can be measured by electrodes on scalp electroencephalograph (eeg) Evoked potential technique uses eeg, but the participant is given a stimulus and the researcher assesses specific brain response to stimulus. Brain imaging techniques map structure and function of brain. Using imaging techniques to assess brain structure.
