BIO SCI N113L Lecture Notes - Lecture 9: Electrodermal Activity, Electrooculography, Electroencephalography
Document Summary
Provide an example of how an antagonist can have an excitatory effect on a neuron. If a normal nt has an inhibitory effect, an antagonist would inhibit this inhibitory effect thus creating an excitatory effect. Given muscle contraction traces, calculate % change in contraction amplitude and frequency. Change in contraction amplitude: (a-b)x100/b: a = average of 4 contraction amplitudes after drug application, b = before drug app. Change in contraction frequency: (fa-fb)x100/fb: fa = freq of first 4 contractions after drug, fa = before drug, f = measured in contractions/min. Identify examples of noninvasive techniques used in neuroscience and whether it provides structural or functional information of the brain. Functional information: pet: radioactive tracers injected; can measure flood flow, oxygen use, sugar use fmri: looks at blood flow and activity in brain, eeg: records electrical potentials/brain waves. Describe the strengths and limitations of electroencephalography (eeg).
