VCE PSY U4AOS1 6B Measuring sleep

Sleep is always easily and directly measured.

• True

• False

Answer explanation

Sleep is difficult to observe and measure as it is a psychological construct.

Which of the following can be used to measure sleep? (Select all that apply)

• EEG

• EMG

• Sleep diaries

Answer explanation

An EEG measures the electrical activity of the eyes.

• True

• False

Answer explanation

An EEG measures the electrical activity of the brain.

Sleep diaries may involve an individual doing which of the following? (Select all that apply)

• Recording how many hours they have slept.

• Measuring the electrical activity of their brain.

• Writing about how they feel when waking up.

• Setting up a camera and videoing themselves while they sleep.

Video monitoring is a completely accurate method of measuring sleep.

• True

• False

Which of the following is most correct?

• An electro-oculograph (EOG) is a device that detects, amplifies, and records the electrical activity of the muscles that move the eyes.

• An electro-oculograph (EOG) is a device that detects, amplifies, and records the electrical activity of the eyes.

Which of the following is most correct?

• An electromyograph (EMG) is a device that detects, analyses, and records the electrical activity of the body’s muscles.

• An electromyograph (EMG) is a device that detects, amplifies, and records the electrical activity of the body’s muscles.

Which of the following is most correct?

• Sleep diaries are a record containing self-reported diagrams from an individual about their sleeping periods.

• Sleep diaries are a record containing self-reported descriptions from an individual about their sleeping periods.

How would the EEG used in the study be able to indicate what stage of sleep a participant is in?

• Through detecting, amplifying, and recording the electrical activity of the brain and measuring brain waves. From this, the EEG can be used to infer what stage of sleep a participant may be in.

• Through detecting, amplifying, and recording the electrical activity of the eyes. From this, the EEG can be used to infer what stage of sleep a participant may be in.

• Through detecting, amplifying, and recording the electrical activity of the muscles and measuring

  movement. From this, the EEG can be used to infer what stage of sleep a participant may be in.

• Through measuring the chemical activity of the brain. From this, the EEG can be used to infer what stage

  of sleep a participant may be in.

The results show that on night 1 the participants on average spent 18.85% of their sleep episode in REM sleep.

What would the EEG show for the researchers to assume the participants were in REM sleep?

• Low frequence of electrical activity.

• High frequence of electrical activity.