PSYO 2470 Lecture Notes - Lecture 11: Excitatory Synapse, Thalamus
2 May 2017
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Document Summary
Can change may biological rhythms: different degrees of control and flexibility. Erp event related potentials: compared the electrical potentials of various events to baseline. Advantages of eeg: non-invasive, can be used during sleeping. What does eeg measure: need thousands of neurons firing, comes form larger perimatural neurons, anything upwards in reading, negative different, anything downward in reading, positive deflection. Synchrony and eeg: neurons firing in sync is best for picking up a signal. Synchronized activity best picked up picks up summation of activity. Picks up magnetic field generated by an electrical current: magnetic fields generated by neurons very very tiny difficult to detect. Categorized based on frequency: beta: 15-30 hz. Found in an activated or attentive cortex: when getting a person to do something active requiring more thought and neural processing, alpha: 8-13 hz, during a waking but quiet state. Fewer peaks per second: theta: 4-7 hz. Some sleep and waking states: delta: < 4 hz.
