Jeff Iliff discusses the scientific reasons behind One more reason to get a good night’s sleep. He speaks with emotion and includes the audience by creating an engaging atmosphere using various methods that can be connected to WOVEN. His main statement in the talk is that sleep is when our brain clears out all of the waste byproduct from a long day. His presentation is well worded to include everyone, even people who know very little about biology. Jeff brings up images throughout the presentation to help paint a clear image of what is taking place as we sleep. He even uses evidence to argue his point through the data from a scientific studying showing the blood vessels of a mouse’s brain while resting versus awake. He includes brief labels on these diagrams to further prevent any confusion with his scientific terminology. While speaking, Jeff maintains a comfortable eye contact that keeps the audience interested in what he is saying. His hand movement is limited- not overwhelming- but just enough to be relaxed. He faces many directions of the audience to engage everyone viewing, not only those who sit directly in front. He also maintains a good pace when moving from image to image. He moves slow enough for the audience to understand his point but not lingering on anything long enough for the audience to become bored.
Looking specifically at the time between 5:01 and 5:11, we see how he transitions from his talking point o the image of the brain of a mouse. His tone is not arrogant when pointing out his personal findings in the research. Instead, he continually uses the word “us” and his voice is the mere awe that matches that of his viewers. Combining visual representations with an interactive speech creates a strong argument and makes for an effective presentation by Jeff Iliff.