5 new discoveries that surprise the human tongue and ears

Tongue does not help us identify different tastes, scents also help you reminisce memories . are secrets that not everyone knows about these two senses.

New discoveries about the human tongue and ears

Have you ever wondered if it's the same durian, many people find it delicious but you can't stand it? Or there are some people who like to smell gasoline or passionate sweet and sour taste in stir-fried ribs and others smell good - are they the same? Does our sense of taste and smell also contain mysteries?

The following article will help you better understand the hidden secrets of these two senses.

1. Tongue does not help us identify different tastes

We are often taught that the tongue of a person has a specific area, which helps identify different tastes such as sour, spicy, bitter, salty or sweet. However, scientists claim that this is a mistake and in fact, the distinction of taste is in the brain , not our tongue.

Scientists have found up to 8,000 taste buds scattered throughout the tongue. Each taste bud has the ability to discover the 5 main tastes of sour, spicy, bitter, salty or sweet.

However, specialized neurons in the brain only perform the signal translation process because each taste bud in the tongue is sent, so we can distinguish the different tastes.

2. Some people are 'allergic' to vegetables and too sensitive to salty taste

Some people with bitter taste receptors are sensitive to sulfur compounds (found in broccoli) that make them suddenly see that this vegetable is bitter even though others find it absolutely delicious.

Besides, many people suffer from diseases that are too sensitive to too spicy food or too salty. This disease is called Hypogeusia.

Accordingly, people with this syndrome cannot eat too spicy or salty foods, they can only eat foods that are tastier than usual.

3. No scent is obnoxious

In fact, the taste of each person is very different and depends on where they live. If a person grows up on the farm, they will no longer smell the smell of too much smell of manure, as well as a person who lives long with dogs will like their smell. But for those who do not have the same experience, they will feel those odors very uncomfortable.

However, for some unfortunate people with Parosmia syndrome, they cannot distinguish the smell . For them, the aroma is like the smell of rotten, they don't even feel uncomfortable when smelling the smell all day long.

According to experts, the reason these people suffer from strange diseases is because the olfactory part is located below the brain damaged.

A part of the brain interprets the damaged input signal, drawing false signals about the scent , making them feel the same aroma and rotten.

4. Some people smell the real smell

Phantosmia is a pathology related to olfactory neurological disorders, the manifestation of this syndrome is hallucinations of smell awareness, or the smell of an odor that does not exist and cannot be described. The word Phanto - comes from the word ' Phantom ', in Latin means a real thing.

Although the cause of Phantosmia has not been verified yet, according to experts, the disease is often accompanied by neurological and psychological disorders such as schizophrenia, mood disorders, epilepsy, and pain. regular head .

5. Scent also makes people recall memories

Few people suspect that the scent is the key to remembering long because the brain will remember and store that " flavor" in a special memory in the brain.

Accordingly, when encountering a familiar scent, the brain will signal and connect with old memories. Each of these memories has been arranged in a precise position on the map inside the brain.

At this time, the brain will generate electrical waves and signals at frequencies of 20-40 Hz, connecting nerve cells in different brain regions to recall old memories.

Further research, the scientists say, the hippocampus and the entorhinal (EC) cortex area work hard to recall the old memories related to this scent.

The EC-hippocampus system is thought to play an important role in recalling memories that are particularly relevant to the location.