Spiders can 'hear human voices'

However, this study does not make us afraid of whether or not spiders are eavesdropping on us, it is really just a way for spiders to defend themselves and detect prey.

According to Science Alert, a new study from American scientists revealed that spiders can hear and feel you are making sounds from a distance of up to 5 meters.

"Surprisingly, we have found that they have a very accurate sense of sound . They can hear sounds from a longer distance than previously thought, although they don't have eardrums." , lead researcher Paul Shamble from University. Cornell, USA said.

Spiders have no eardrums , that is correct. However, spiders have used sensitive hair routes on their feet to detect noise.

Spiders don't have eardrums.

Although earlier, many studies show that spider hairs are very sensitive to air vibrations, such as sound waves. However, no scientist has thought that spiders can transmit sound waves, vibrate to the nervous system and conduct resolution of those signals. In other words, spiders can not only detect vibrations, but they can also sense that sound.

This study was performed on American jumping spiders, Phidippus audax , and this particularly important finding was only found by chance in another similar experiment.

Shamble and colleagues struggled to record all the changes in the spider's neural neural network to see how they handle visual information.

Spiders can not only recognize vibrations, but they can also sense the sound accurately.

One day, fellow Gil Menda was setting up the experiment and started taking notes in the deeper areas of the spider's brain. As he moved away from the spider, the chair suddenly hissed from friction against the floor. Immediately the reaction from the neurons of the spider suddenly activates the notification speaker. Later iterations, the team received a similar message stating that neurons are being stimulated.

Unexpectedly, Menda continued to move further and when it reached a distance of 5 meters, the experimental spider continued to produce certain responses to the sound.

To find out exactly how the "hear" spider species is, the team placed water droplets on the spider's legs with the aim of blocking their sound perception. Results showed that the auditory nerve cells in the brain of the spider stopped responding immediately.

Spiders are most sensitive to low audio frequencies (about 80-130Hz).

The experiment further confirmed that, although many spiders can respond to applause, they are still most sensitive to low audio frequencies (around 80-130Hz). It is the beating frequency of the horned wasp, the top killer of the jumping spider and is also the emitting frequency of men with deep bass.

Sharing with The Guardian, Shamble said: "They may know you're talking in a certain room, but they certainly can't hear (and understand) what you're saying." The team is continuing to experiment on other spider species like wolf spiders and fish spiders.

Known research has been published in the recent journal Current Biology. If research is soon verified, this may be an interesting and very new finding about spiders that we have not known for a long time.