Dot Point 3 - Physiological Measures

Question 0

What are the draw backs when using physiological measures to measure consciousness?

Answer 0

Hard to identify the participants private experience
(We have to ask)

Physical changes could be due to other factors
E.g illness

Question 1

What are the benefits of Physiological measures when measuring Consciousness?

Answer 1

Tend to be reliable
Least subjective
Data us consistent and stable over time
Can be cross referenced across different researchers

Question 2

What are the 3 main devices when measuring physiological measures?

Answer 2

EEG - electroencephalograph

EOG - electro-oculargraph

EMG - electromyograph

Question 3

What is an EEG and what does it do?

Answer 3

An EEG is an electroencephalograph and it detects, amplifies and record electrical activity of the brain.

Question 4

What is an EOG and what does it do?

Answer 4

An EOG is an electro-oculargraph and it detects, amplifies and records electrical conductivity of the muscles surrounding the eyes.

Question 5

What is an EMG and what does in do?

Answer 5

An EMG is an electromyograph and it detects, amplifies and records electrical conductivity of the muscles,

It indicates both muscle tone and activity

Question 6

And EEG also

Answer 6

Measures the amplitude and frequency of our brain waves

Question 7

What is the amplitude of a brain wave?

Answer 7

The amplitude refers to the size or height of the wave

Question 8

What is the frequency of a brain wave?

Answer 8

The frequency refers to the number of waves per second

Question 9

What is the order of your brain waves as you fall asleep?

Answer 9

BATD 
beta
Aloha
Theta
Delta

Question 10

Beta

Answer 10

• NWC
• high frequency
• low amplitude

Question 11

Alpha

Answer 11

• drowsy/relaxed/meditating
• high frequency (lower than beta)
• low amplitude (higher than beta)

Question 12

Theta

Answer 12

• early stages of sleep
• medium frequency
• mixed amplitude

Question 13

Delta

Answer 13

• deep sleep
• low frequency
• high amplitude

Question 14

What is a polysomnogram ?

Answer 14

When the devices combine together in a continuously moving chart

Question 15

What are other physiological measures?

Answer 15

Heart rate
Body temp
Galvanic skin response

Question 16

Heart rate

Answer 16

• measured by a an electrocardiogram ( ECG) as it detects, amplifies and records electrical conductivity of the heart muscles,
  It’s measured in beats per minute

Question 17

Body temp

Answer 17

Temperature is linked to alertness

Measured during sleep by recording temperature of skin on your fingers

Question 18

Galvanic skin response

Answer 18

Measures the electrical conductivity of the skin
As skin becomes more moist (perspires) this increases the conductivity
The increase in NWC compared to when relaxed or in some ASC’s where it decreases