Webmedigo

Why do we dream?

2020-04-24T21:52:00.000+05:30

Why do we dream?

We often dream during sleep and most of us think why do we dream and what makes in our body to dream and how we remember it,
Here is the answer for all that questions.

Dreams are subconscious imaging that occurs during the REM (rapid eye movement) stage.

In olden days people use to think that dreams are connection or medium between the man and God.

Many scientists conducted number of research to study the science behind dream.

Sigmund Freud states that dreams are nothing but an electrical impulses that randomly pulls our thoughts and images from the memories. Humans than construct a stories in an attempt to make a sense of it.

Nightmares are one which we get from our bad experience and fear and phobias.

Dreams and Emotions:

Why the emotions are attached with dreams?

What we see in dreams might not be real but the emotions attached to it are real this is because dreams are generated in the Lingus gyrus a part of the brain which is associated with emotions and visual memories.

'Charcot willbrand syndrome' is a psycological condition in which the person will loss the ability to dream, this is because of the damage to lingual gyrus ( a part of brain responsible for dream).

Does the dreams which tells the future are true?

This are the initiative dreams which seems to predict the future through the sixth sense

These are called as precognition dreams.

This type of dreams express our innermost hopes based on unconscious information which we may not be repressing.

Truth of babies teething and diarrhoea

2019-05-24T01:06:00.001+05:30

Truth of babies teething and diarrhoea

Teething is the important stage of child's life..

Many parents believe that teething causes diarrhoea in child and they began to follow certain myths of tying a black thread with stones in it believing it helps in easy teething process. But the fact is that diarrhoea is not at all related with the teething until and unless your baby tries to put an object or fingers which are highly contagious in the mouth in an attempt to reduce the discomfort caused by hardening of gums.

However some doctors believe that increased salivation during teething causes diarrhoea. When the baby is teething they may drool ( flow of saliva outside the mouth) more than usual, much of the spit gets swallowed which upsets your babies tiny tummy which in turn causes diarrhoea.

Keep in mind that increased diarrhoea can be a sign of serious infections and watery stools may cause dehydration to little one's look forward to your pediatrician in such conditions.

How to stop diarrhoea in babies during teething?

Gently rub the babies gums by using finger or gauze.
Give them a teething ring.
Dry the drool.
Try an over the counter remedy.

What makes you laugh?

2019-05-23T01:09:00.000+05:30

What makes you laugh?

Laughter is contagious of all the emotional experiences. Laughter not only occurs because of happy feeling it may result from any obvious joke or it can be triggered by embarrassment and other social discomfort.

Laughter may facilitate in bonding across large group. Laughter releases the chemical which helps in building the social bond. Laughter along with speech helps us to bond quickly and easily with large group.

Laughter is triggered by many sensations and thought which in turn activates many parts of the body. When we laugh our facial expressions changes and we makes sound. The big laughter involves arms, legs and trunk and also affect the breathing pattern.

Laughter and brain.

How our brain judge when to laugh and when not to?

The answer for this question is our brain responds for humor ( humor is the unexpected thing or surprises) the brain respond to the sudden unexpected things which are good as laughter or smile.

If you laugh too much?

Researches have shown that laughing too much can be dangerous. It may harm health in number of ways. The force of laughing can cause.

Headaches .

Dislocation of the jaw.
Hernia.
Asthma attack.
Cardiac arrhythmias.

How to hold a laugh?

Purse your lips.
Cover your mouth.
Bite inside of your cheeks.
Remember the sad events or experiences.
Try to divert your mind.

Hiccups and myths

2019-04-25T00:28:00.001+05:30

Hiccups and myths

Remembered! Our grandmothers use to tell when we get hiccups it means someone is missing us or someone is remembering us...

Do you really believe them all !

Myths are many but there is a scientific evidence for hiccups...

It's not exactly what they said, hiccups or (hichkki) is a involuntary movement of the diaphragm a cavity which separates the chest cavity from the abdomen which creates the eratic noise.

The involuntary contractions of diaphragm causes brief closure of vocal chords which results in characteristic sound of hiccups.

Causes of hiccups

The exact cause of hiccups is not known bit it is believed that it is caused due to

Being anxious or thrilled
Eating irritated food
Sudden change in temperature

Science behind the sneezing

2019-04-16T19:46:00.000+05:30

Science behind the sneezing

Sneezing is a physiologic response to the irritation of the respiratory epithelium lining of the nose. The process usually begins with the release of chemicals such as histamine or leukotrienes. These substances are manufactured by inflammatory cells such as eosinophils and mast cells typically found within the nasal mucosa. Chemical release is caused by viral respiratory infections, filtered particles, allergens (substances that trigger allergic reactions) or physical irritants such as smoke, pollution, perfumes and cold air.

Allergic reactions with the nasal mucosa require the presence of IgE (allergy antibody specific for the allergen). This leads to fluid leakage from vessels in the nose, causing symptoms of congestion and nasal drip. Additionally, nerve endings are stimulated, leading to the sensation of itching.

Ultimately, the nerve ending stimulation leads to activation of a reflex inside the brain. The nervous impulse travels up the sensory nerves and down the nerves controlling muscles in the head and neck, and that leads to the rapid expulsion of air.

The high velocity of the airflow is achieved by the buildup of pressure inside the chest with the vocal chords closed. Sudden opening of the cords allows the pressurized air to flow back up the respiratory tract to expel the irritants.

This helps to remove offending particles in the nose. However, in infected individuals, it also allows for the spread of the common cold, as innumerable viral particles are contained within each droplet of mucus expelled.

Does our heart stops while sneezing?

sneeze begins with a tickling sensation in the nerve endings that sends a message to your brain that it needs to rid itself of something irritating the lining of your nose. You first take a deep breath and hold it, which tightens your chest muscles. The pressure of air in your lungs increases, you close your eyes, your tongue presses against the roof of your mouth and suddenly your breath comes out fast through your nose.

So where did the myth originate that your heart stops when you sneeze? The changing pressure in your chest due to sneezing also changes your blood flow, which may change the rhythm of your heartbeat.

Dr. Richard Conti, past president of the American College of Cardiology, speculates that the belief that the heart actually comes to a stop during a sneeze could result from the sensation of having the heart "skip a beat." When there is a prolonged delay before the heart's next beat, he said, that beat is then more forceful and more noticeable, perhaps as a funny sensation in the throat or upper chest (Ray, 1992).

Why we yawn?

2019-04-15T19:30:00.000+05:30

Why we yawn?

I have always been fascinated by yawning and what purpose it has to our bodily function, if any. Do we yawn out of boredom? Tiredness? Or some other reason? Yawning as a phenomenon has many people searching for the reasons of why we actually do it. In fact, the powerful contagious nature of yawning has puzzled researchers for decades.

A yawn is an involuntary reflex where the mouth is opened wide, and the lungs take in a lot of air. The air is then exhaled slowly. During this time, the eardrums stretch, and the eyes may also close tight, causing them to water.

No thought or action has to be taken to produce a yawn, and the process is similar for everyone. Yawning commonly occurs either before or after sleep, which is why it is usually considered a sign of being tired. Yawning also occurs frequently in people who are doing boring or tedious things.

There is also a social aspect to yawning. Yawning appears to be contagious among humans and other animals, and the contagiousness of a yawn is well documented but hardly understood.

Causes of yawning

Before bed:

At night, we become less alert, and that can encourage a yawn. Even though there’s a lot of mystery surrounding this bodily function, we do know that certain chemicals in our brain can induce a yawn. One of these chemicals, adrenocorticotropic hormone, spikes at night, and that’s one potential reason that we do it right before bed.

When bored

While a yawn doesn’t necessarily means you're bored, it doesn’t rule it out, either. We know that when our brain isn’t properly stimulated, its temperature drops and that can encourage yawning.

When tired

The act of yawning increases your heart rate, so one theory is that if you’re tired, this short activity can give you a quick burst of energy. If you find yourself doing it at inopportune times during the day, your body may be trying to wake you up.

How to prevent yawning

Deep breathing
Chill out
Go outside
Stretching
Drink water

Why do we cry?

2019-04-15T01:34:00.000+05:30

Why do we cry?

Scientists have been trying to answer this question for centuries.

In 1662, Danish scientist Niels Stensen discovered that tears originate in the lacrimal gland.

We have three distinct types of tears:

Basal tears.
Reflex tears.
Emotional tears.

Basal tears:

In healthy mammalian eyes, the cornea is continually kept wet and nourished by basal tears. They lubricate the eye, and help to keep it clear of dust.

Reflex tears:

results from irritation of the eye by foreign particles, or from the presence of irritant substances such as onion vapors, perfumes and other fragrances, tear gas, or pepper spray in the eye's environment, including the cornea, conjunctiva, or nasal mucosa, which trigger TRP channels in the ophthalmic nerve.

Emotional tears:

Most researchers believe that emotional tears—triggered by strong feelings such as joy and sadness—are unique to humans. While there is a lot of crying research currently underway, we know that emotional tears are influenced by biological, psychological, and social factors.

When your body makes emotional tears, your limbic system (the part of your brain associated with emotional arousal) signals your Pons (the brain’s “message station”), which then relays a signal to your lacrimal system to produce tears. More research is needed to understand the physiological and neural changes that come together with emotional tears.

Inside the tears?

While we know that all tears contain enzymes, lipids, metabolites and electrolytes, we have more to learn about the chemistry of emotional tears. Some scientists have proposed that these tears contain additional proteins and hormones not found in basal or reflex tears.

Higher levels of prolactin, adrenocorticotropic hormone, Leu-enkephalin, potassium and manganese have all been located in emotional tears. Some researchers have hypothesized that the release of stress hormones like leu-enkephalin may help regulate the body or bring it back to a homeostatic level. However, these preliminary findings still need further scientific replication.

Tears do much more than just moisten and protect our eyes from bacteria—just how much more we are still learning.