3 audio illusions certainly you have never known

Did you know that sound is also one of the hallucinations that few of us recognize.

Many people assume that hallucinations occur only with sight, with our eyes. But the fact is that the word "hallucination" refers to the effects on the brain. In other words, it will happen to any senses of the body, including hearing.

The hallucinations coming from the ears are scientifically referred to as " sound hallucinations" - sound illusion. And below will be the sounds that are thought to be "the most crazy" that you can't expect.

1. When words become lyrics

Try listening to the conversation below, you will feel something very special.

Especially right? When phrases are repeated, you will naturally feel that the speaker is like singing. Scientists call this " Speech illusion into lyrics " - Speech to song illusion.

The cause is of course because of the brain. When the sound passes through the eardrum, it transmits the signal to the area that processes the brain's sound, and that's why we hear it.

However, when you hear a repeating phrase or phrase, the brain automatically "catches" the sound, making us think that we are listening to music.

As soon as this thought occurs, the brain even works harder to find the tone and pitch, and eventually we will feel the melody clearly appear.

2. Third-degree paradox - tritone paradox

Keep listening to the audio in the video below and show how their pitch changes (For example, high-low or low-high).

That's it, right? Now is the time to quarrel, because there will definitely be two streams of opinion: listeners become high - low, listeners become low - high. This phenomenon is called the "third-degree paradox" - the Tritone Paradox, first discovered in 1986 by Dutch researcher Diana Deutsch.

According to conventional music, the melody from one note to another keeps the same change. But the third interval (tritone - half the octave) goes backwards. When a pair of tritones goes up: like Do - Fa promoted, some people hear the sound falling. But also that person when listening to the sound of Son thang - Rê becomes slowly low and high.

So why are there two lines of comments like this? Diana Duetsch explains that this may be related to the voice and language of each person, in which the way of talking from childhood affects the brain, and affects our hearing.

3. Sounds from . negative realms

It sounds a bit scary, but actually this is just a funny way of an audio hallucination called: Phantom hallucinations - Phantom word illusion.

To experience this illusion, listen to the video below and tell: what word do you hear?

You will hear a sound that is repeated. But the problem is, each person hears a different word. The listener hears "rainbow", the person hears "window", or "bueno" .

But why do each person hear different sounds? The reason is because of three bones in our middle ear - microscopic bones that transfer sound waves into electromagnetic waves to transfer to the brain.

But the problem is that the brain is easily fooled, and often . deceive itself. The brain when hearing a sound will always find ways to understand its meaning. And it does this by combining sound waves into a meaningful word.

This is the cause of the "mishap" of what others say. The reason why this illusion has the name "ghost" comes from the fact that many people hear the wind flowing through the stone and thought it is the sound of ghosts.