What's Happening When We Hear the Voice in Our Head?

Image Courtesy of iStock
Image Courtesy of iStock

The voice we hear in our head comes in many forms. It can psyche us up for a big interview, help us remember an important speech, or guilt-trip us into calling our grandparents more often. The researchers behind the Hearing the Voice project believe that studying the science behind inner speech will give us a better understanding of language, mental illness, and ourselves. 

Researchers at Durham University in England have been developing the project since 2010. Their scope stretches far outside the medical world with team members hailing from the fields of neuroscience, English literature, medical humanities, philosophy, psychology, and theology. One of the main goals of the project is a better understanding of inner voices as they relate to mental disorders, and one way they’ve been doing that is by studying the voices we all hear on a daily basis. 

Scientists already know that inner speech shares a lot of similarities with externalized speech in terms of what’s happening with our brains and bodies. When that voice “speaks” in our head, our larynx is making subtle muscle movements to accompany it. The same part of our brain we use to speak out loud is also active when we speak internally. 

Knowing this, researchers can compare what’s happening to the brain when speaking aloud to what happens to it during auditory verbal hallucinations (a term often used to describe the voices heard by people suffering from mental illness). One recent study was conducted by scientists in Finland in which they scanned the brains of participants experiencing such hallucinations then asked them to purposely imagine the same voice. The experiment showed that while similar parts of the brain did light up, the main difference was in the supplementary motor area, which was much less active when the subjects heard voices. This supports the theory that we rely on signals from this part of the brain in order to recognize an inner voice as “ours.”

Looking at neuroscience is important to the Hearing the Voice project, but listening to and discussing first-hand experiences is also a huge factor. Last year, Hearing the Voice teamed up with Edinburgh’s International Book Festival to look at the experiences of hearing inner voices from the perspectives of writers and readers. The event included interviews, workshops, and panel discussions aimed at shedding light on the subject. 

After receiving another five years of funding this spring, the Hearing the Voice project is continuing to find creative ways to explore the internal voices that affect us all.

[h/t: The Guardian]

What's the Difference Between Pigeons and Doves?

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iStock

To the layman, the difference between pigeons and doves has something to with color, maybe. Or location. Or general appeal (doves usually get much better press than pigeons do). But what’s the actual, scientific difference between doves and pigeons?

As it turns out, there isn’t one. Paul Sweet, the collection manager for the department of ornithology at the American Museum of Natural History, says the difference is more linguistic than taxonomic.

“The word dove is a word that came into English from the more Nordic languages, whereas pigeon came into English from French,” Sweet tells Mental Floss.

Both dove and pigeon refer to the 308 species of birds from the Columbidae family, Sweet says. There’s no difference between a pigeon and a dove in scientific nomenclature, but colloquial English tends to categorize them by size. Something called a dove is generally smaller than something called a pigeon, but that’s not always the case. A common pigeon, for example, is called both a rock dove and a rock pigeon.

“People just have their own classification for what makes them different,” Sweet says. “So in the Pacific, for example, the big ones might get called pigeons and the smaller ones might be called doves, but they’re actually more closely related to each other than they are to other things in, say, South America, that are called pigeons and doves.”

The difference boils down to linguistic traditions, so feel free to tell people you’re releasing pigeons at your wedding or that you’re feeding doves in the park. Scientifically speaking, you’ll be correct either way.

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What Is the Wilhelm Scream?

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iStock

What do Star Wars, The Lord of the Rings, Pirates of the Caribbean, Harold and Kumar Go to White Castle, Toy Story, Reservoir Dogs, Titanic, Anchorman, 22 Jump Street, and more than 200 other films and TV shows have in common? Not much besides the one and only Wilhelm Scream.

The Wilhelm Scream is the holy grail of movie geek sound effects—a throwaway sound bite with inauspicious beginnings that was turned into the best movie in-joke ever when it was revived in the 1970s.

Just what is it? Chances are you’ve heard it before but never really noticed it. The Wilhelm Scream is a stock sound effect that has been used in both the biggest blockbusters and the lowest low-budget movies and television shows for over 60 years, and is usually heard when someone onscreen is shot or falls from a great height.

First used in the 1951 Gary Cooper western Distant Drums, the distinctive yelp began in a scene in which a group of soldiers wade through a swamp, and one of them lets out a piercing scream as an alligator drags him underwater.

As is the case with many movie sound effects, the scream was recorded later in a sound booth with the simple direction to make it sound like “a man getting bit by an alligator, and he screams.” Six screams were performed in one take, and the fifth scream on the recording became the iconic Wilhelm (the others were used for additional screams in other parts of the movie).

Following its debut in 1951, the effect became a regular part of the Warner Bros. sound library and was continually used by the studio’s filmmakers in their movies. Eventually, in the early 1970s, a group of budding sound designers at USC’s film school—including future Academy Award-winning sound designer Ben Burtt—recognized that the unique scream kept popping up in numerous films they were watching. They nicknamed it the “Wilhelm Scream” after a character in the first movie they all recognized it from, a 1963 western called The Charge at Feather River, in which a character named Private Wilhelm lets out the pained scream after being shot in the leg by an arrow.

As a joke, the students began slipping the effect into the student films they were working on at the time. After he graduated, Burtt was tapped by fellow USC alum George Lucas to do the sound design on a little film he was making called Star Wars. As a nod to his friends, Burtt put the original sound effect from the Warner Bros. library into the movie, most noticeably when a Stormtrooper is shot by Luke Skywalker and falls into a chasm on the Death Star. Burtt would go on to use the Wilhelm Scream in various scenes in every Star Wars and Indiana Jones movie, causing fans and filmmakers to take notice.

Directors like Peter Jackson and Quentin Tarantino, as well as countless other sound designers, sought out the sound and put it in their movies as a humorous nod to Burtt. They wanted to be in on the joke too, and the Wilhelm Scream began showing up everywhere, making it an unofficial badge of honor. It's become bigger than just a sound effect, and the name “Wilhelm Scream” has been used for everything from a band name, to a beer, to a song title, and more.

But whose voice does the scream itself belong to? Burtt himself did copious amounts of research, as the identity of the screamer was unknown for decades. He eventually found a Warner Bros. call sheet from Distant Drums that listed actors who were scheduled to record additional dialogue after the film was completed. One of the names, and the most likely candidate as the Wilhelm screamer, was an actor and musician named Sheb Wooley, who appeared in classics like High Noon, Giant, and the TV show Rawhide. You may also know him as the musician who sang the popular 1958 novelty song “Purple People Eater.”

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