01:830:101 Lecture 3: Chapter 5

• School: Rutgers University
• Department: Psychology
• Course: 01:830:101
• Professor: Mimi Phan

Document Summary

Positron emission tomography (pet): measures consumption of glucose like molecules to give a picture of neural activity. Doctor injects radioactive dye, lights up areas of the brain with the most activity. Functional mri (fmri): uses magnetic fields to visualize brain activity. Usualful in clinical settings eg. finding a tumor in the brain. Magnetoencephalography (meg): measures tiny magnetic fields generated by the brain. Measures magnetic fields correlated with brain activity. Localization of the brain: different areas of the brain are associated with a particular function. Complex tasks often require multiple parts working together. Includes thoughts, perceptions, experiences, and self awareness. Varies from controlled consciousness to daydreaming, sleeping. Sleeping and waking = alternating states of consciousness. Polysomnography: objective measurements used to examine physical variables during sleep. Frequency: number of up-down cycles in brain waves every second. Amplitude: height and depth of the frequencies. Beta waves- high freq. low amp. - characteristic of wakefulness.