Do Fish Dream?

The video explores the concept of dreaming in animals, particularly focusing on fish. It discusses human sleep cycles, especially the REM phase, and compares them to fish sleep patterns. Research on zebrafish shows that they have sleep states similar to humans, suggesting that dreaming might be possible in fish. The study uses advanced techniques to observe brain activity in fish, highlighting evolutionary links between fish and human sleep.

What is the main question raised about animal dreams in the introduction?

• How do dogs' dreams differ from humans'?

• Why do humans have dreams?

• Can fish experience dreams like humans?

• Do all animals dream the same way?

What was a significant challenge in studying fish sleep before 2019?

• Lack of interest in fish sleep

• Challenges in measuring brain activity

• Difficulty in observing fish behavior

• Inability to find sleeping fish

Which method was used to study brain activity in zebrafish?

• Electroencephalogram (EEG)

• Behavioral observation

• MRI scanning

• Neural glow gene insertion

What are the two main sleep states observed in zebrafish?

• Active sleep and passive sleep

• Deep sleep and light sleep

• Slow bursting sleep and propagating wave sleep

• REM and non-REM sleep

What does the study suggest about the evolution of sleep patterns?

• Sleep patterns evolved after fish and humans diverged

• Fish do not have any sleep patterns similar to humans

• Fish and human sleep patterns evolved independently

• Similar sleep patterns may have evolved before fish and humans split