PHGY 212 Lecture Notes - Lecture 1: Digital Filter, Oversampling, Digital Signal Processing

85 views2 pages

Document Summary

Biological signal acquisition: goals: computer-based data acquisition & digital signal processing, 3 experiments: (1) waveform acquisition (2) artifacts contaminating eeg recordings and (3) alpha waves in eeg. Signal: abstract element of information: coded messaged sent from one organism to another or between parts of organism. Function: contain information about behavior of some phenomenon, for 1 or more independent variables: transmitter -- receiver. Electrophysiology: measures flow of ions in biological tissues & related changes in potential: measure extracellular potential for this lab, ekg measures heart, spirogram breathing and eeg brain. Sine wave: waveform: signal amplitude plotted as function of time, biological signals are complex waveforms, deterministic: predictable for time span of interest. Stochastic/random: signal whose value has some element of chance associated with it: hard to model mathematically. Frequency: number oscillations per second (hz: 1 oscillation/cycle in 1 sec) Spectral analysis: allows us to see what frequencies/amplitude make up the signal.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents