Lab 17

Question 1

Focus lab 17

Answer 1

physiological pulse traces, data collection and analysis, ANOVA and t-Test

Question 2

What is done by the transducer, powerlab, and software

Answer 2

Transducer collects analog signal, Powerlab amplifies, filters, and samples, and computer converts to digital signal

Question 3

How to count waves

Answer 3

same spot on adjacent waves ie. peak to peak

Question 4

How to calculate HR

Answer 4

Divide number of beats by number of seconds then multiply by 60 to get BPM

Question 5

When does HR start increasing

Answer 5

BEFORE exercise starts - anticipation

Question 6

Reject null when:

Answer 6

|T|>T crit and P<.05

Question 7

Degrees of freedom

Answer 7

Between groups = number of groups-1. Within groups = number of total people per group total - 1 df for each group (so if 3 groups of 14, 14*3-3)

Question 8

Signal conditioning

Answer 8

amplification, filtering of signal by powerlab hardware before sampling for display