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  • - [Narrator] There are a lot of us

  • all with different cultures, languages, beliefs.

  • So, yeah. Communication.

  • It's not always easy.

  • - You're crazy

  • - You're crazy

  • - You're crazy

  • (slapping)

  • - [Narrator] But no matter where we come from

  • or the languages we speak

  • by using these,

  • we can still connect with other humans.

  • And now maybe with them too.

  • - There are so many purposes of facial expressions.

  • I'm David Matsumoto.

  • I'm a Professor of Psychology

  • at San Francisco State University,

  • and I'm also director of Humintell.

  • The face is one of the most complex signal systems

  • we have in the body.

  • And it serves many purposes.

  • For example, when we wrinkle our nose in disgust like this,

  • not only is it communicating something to you

  • who can perceive my expression,

  • what is also doing is

  • clamping down a little bit on those nasal passages.

  • It's preventing things from coming into my body,

  • through my nasal passage.

  • - [Narrator] Facial expressions also communicate

  • to the people around us.

  • One of the biggest advocates for this theory,

  • Charles Darwin.

  • - [David] Darwin posited that all humans have emotions.

  • It allows us to act immediately

  • with minimal conscious thinking or awareness.

  • And then on top of that,

  • we add these expressions

  • so that we could communicate that reaction

  • to others as well

  • and that helped the group to survive.

  • - [Narrator] Because of this,

  • Darwin believed our expressions were

  • universal.

  • - So in psychology today,

  • there is widespread agreement

  • that seven facial expressions of emotion

  • are universally recognized all around the world,

  • regardless of race, color, creed, nationality, gender,

  • any demographic that exists.

  • They are

  • anger, contempt, disgust, fear, happiness, sadness,

  • and surprise.

  • (dramatic music)

  • - [Narrator] So this means as humans,

  • we can talk to each other,

  • even without words

  • (dramatic music)

  • But can facial expressions

  • help us connect with human-like technology?

  • - So the robot is a way to understand human self, for me.

  • By creating the very human-like robot

  • I believe that we can get some knowledge about the humans.

  • My name is Hiroshi Ishiguro.

  • I'm a roboticist.

  • What I could learn through the robots

  • so many things, right?

  • We are trying to develop interacting robots with humans.

  • (dramatic music)

  • And we're studying the how the human

  • can interact with the robots.

  • So in order to develop that kind of a robot

  • the first facial expressions

  • and the gazing directions

  • gazing control of the robot is so very important.

  • So robot needs to represent the emotions

  • and intelligence in many ways.

  • We have totally different cultures

  • between United States and in Japan,

  • but I know that we understand emotional expression.

  • There is no doubt emotional facial expressions

  • is a very important way of communication.

  • So therefore the facial expression is very important

  • for android and for having the communication with human.

  • - [Robot] Hello,

  • My name is Erica.

  • - [Robot] Meet Erica.

  • - I think Erica is the most human like android in the world.

  • Erica can have a kind of a natural conversation

  • with the visitors.

  • Maybe the five or 10 minutes.

  • We are implementing the, maybe just major

  • the facial expression with Erica.

  • Happy,

  • - It's all very exciting

  • - Angry.

  • - I'm done talking to you,

  • please don't come speak with me again.

  • - And it's sad and depressed.

  • (foreign language)

  • - So Android can have their communications

  • by exchanging the facial expressions

  • even if android doesn't understand the language.

  • - There are so many great applications for these robots.

  • Whether it's helping the elderly, guiding tourists

  • or even for entertainment.

  • It's all very exciting.

  • Oh, sorry about that.

  • I got a little carried away.

  • - [Narrator] By designing robots to have facial expressions,

  • humans could more easily connect with them

  • and incorporate them into our lives.

  • - It's just really interesting because

  • we use our faces to reference many different mental states.

  • - By expressing the facial expression.

  • Even if we don't understand our language to each other,

  • we can the share some information.

  • - And because of that facial expressions of emotion are

  • the closest thing we have to a universal language.

  • They allow us to share emotions with each other.

  • They allow us to share the time

  • when we laugh together or cry together.

  • If there's anything out there,

  • they're the single most important vehicle

  • that we have that can bring us all together.

  • (upbeat music)

- [Narrator] There are a lot of us

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How Facial Expressions Help Robots Communicate with Us | Nat Geo Explores

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    林宜悉 posted on 2020/11/07
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