The relationship between intelligence and brain size, both among people and between various species, has never been precisely well defined. People often believe that their outstanding psychological capacities must mean that they are superior to all animals as far as brain size is concerned. However, it is not true since whales and elephants have much bigger brains than humans and humans have the same brain-to-body mass proportion as mice do.

Here are a number of ways by which the brain size can be determined:

Encephalization remainder: Since it would be against human instinct to admit loss and defeat, researchers have created a measure to determine the brain size called the encephalization remainder. It is the proportion of actual brain mass with respect to the anticipated cerebrum mass for the animal s size (based on the suspicion that bigger animals require somewhat less brain matter with respect to their size, compared to little animals). By this metric, human beings prove to be the best, with an EQ of 7.5 outperforming the dolphin's 5.3 and the mouse's 0.5.
IQ testing: Without a solitary and evident method for measuring intelligence, some improved tests like IQ (Intelligence Quotient) are by and large acknowledged as a moderately decent working device. IQ estimations are not without issues, and there is a great deal of criticism about their significance. IQ testing uses government sanctioned tests, for example, the WAIS III (Wechsler Adult Intelligence Scale). The normal IQ is somewhere around 90 and 110. The scores beneath the normal may demonstrate changing degrees of pathology, for example, marginal intellectual function, or mental hindrance of different severity. Over the normal range is regularly connected with knowledge, splendour, talent, or genius. However, as with computers of a few eras, size and intellect do not precisely relate. Present day portable computers weighing around one or two kilogrammes can store more data and perform a greater number of assignments than supercomputers from the 1980s that used to possess expansive structures. This is a contrast amongst quantity and quality. Numerous scientists now hold the view that it is not the whole brain, which is bigger in a human with a higher IQ, yet rather certain zones that are denser and might be bigger. A fascinating late revelation is that these ranges can be expanded in size and enhanced in usefulness during the course of our life.
NeuroplasticityIt refers to the dynamic procedure of repair and maintenance that our brains are continually experiencing. We are conceived with around hundred billion neurones, yet lose around two hundred thousand a day to a procedure called pruning. As we develop and grow, pathways in the brain that are not required are detached, and the neurones pass on. However, in a compensatory procedure, new neurones are delivered and more detailed associations are built up between neurones that are more dynamic. This is the procedure of de-cluttering, in which our brains develop to work at most extreme effectiveness. If you wish to discuss about any specific problem, you can consult a Neurologist.

Brain Size - How It Is Related With Intelligence?

Sleep apnea is a disorder which is characterized as interruptions in breathing when you are sleeping. These interruptions or pauses in breathing usually last for about 10 to 20 seconds and may be repeated over 100 times alongside the duration of your sleep. This condition leads to poor sleep resulting in drowsiness, fatigue and poor concentration throughout the day.

Sleep apnea can be classified as:
1. Central sleep apnea: Central sleep apnea impairs the central nervous system wherein the brain fails to control muscles which regulate breathing while you sleep.
2. Obstructive sleep apnea: This type of sleep apnea occurs when the soft tissues present in the back of the throat block the airway and thus resulting in loud snoring.

Signs and symptoms
The various signs and symptoms of sleep apnea are
1. Loud and chronic snoring during sleeping
2. Interruptions in breathing
3. Shortness of breath during sleep
4. Fatigue during the day
5. Choking and gasping during sleep
6. Extreme irritability and drowsiness
7. Experiencing headaches in the morning
8. impaired concentration and forgetfulness
9. Chronic sore throat and dry mouth
10. Depression

The various risk factors for sleep apnea are:
1. If you are overweight
2. If you are male
3. If you are over the age of 40
4. If you have a large tongue and tonsils
5. If someone in your family has sleep apnea
6. Nasal obstruction due to sinus problems

There are certain prevention measures to control sleep apnea, they are:
1. Limit smoking: Smoking may cause you to retain fluid in the throat which contributes to sleep apnea.
2. Exercise: You should exercise regularly to keep off weight as being overweight increases the chances of getting affected by sleep apnea.
3. Schedule your sleep: You should get enough sleep every day so that your body is refreshed and revitalized. Getting enough sleep, thus helps in preventing sleep apnea.

Risk Factors Associated with Sleep Apnea

A Brain Tumour can be defined as an abnormal growth of the tissues in the brain, which can disrupt the proper brain functions. Generally, the cells in the human body die and are replaced by new cells, while in the case of a tumour, the old cells do not die and form an accumulation and continues to grow to form a mass as more and more cells are added to it.

Symptoms of Brain Tumour:

Headache: Having headache on regular basis, without any history of having such frequent headaches in past, which becomes worse because of other pressure related activities, such as sneezing, coughing, exercising might be a possible symptom of brain tumour and issues related to such sudden and frequent headaches should be taken up with the doctor without any further delay.
Seizures: Seizures (fits) are amongst the most common symptoms of brain tumour, which might be limited to a particular body part or the whole body. Seizures might even continue after the treatment of brain tumour because of the left scar tissues in the brain.
Numbness in arms/legs: Numbness in any body part, especially arms and legs should also be get evaluated timely, so that, if the possible reason behind them is a brain tumour, then the same could be treated well on time.
Balancing problems: Poor coordination and balancing problems also arise as the most prominent symptom for the brain tumour and hence such small changes must be evaluated and the person suffering should be taken to a doctor immediately to get treated without any delay.
Memory problems: Lack of concentration, poor memory and short term memory loss are few of the possible symptoms that indicate the presence of tumour.
Nausea or vomiting: Nausea or vomiting might be the symptoms of many other possible health issues, but a headache supported by nausea and/or vomiting is one of the many symptoms of a brain tumour and hence should not be ignored.
Facial paralysis: The inability to keep the facial activities under control also indicates the presence of a possible brain tumour and the same should also be diagnosed as soon as one experiences it.
Change in vision: A person suffering from brain tumour might also experience changes in the vision, dizziness, blurry vision, among other sight related issues.
Change in speech: The inability to speak properly and changes in the speech of a person may also indicate a possible presence of a tumour.
Hearing problems: Sudden occurrence of hearing problems and other hearing related disorders might have the brain tumour as a possible reason.
Diagnosing a brain tumour may include one or more of many tests, including CT scan, Magnetic Resonance Imaging (MRI), Angiogram and biopsy. One should never ignore the symptoms of the brain tumour and should get himself/herself checked since the brain tumours might result into permanent damages to the brain; hence such issues should never be ignored.

Do You Think You are Suffering from Brain Tumor? 10 Signs You Must Take Seriously

How Serious Are Seizures in Children

During a febrile seizure, the body of a child may convulse, shake and contract, the eyes may roll, and he or she may moan or become unconscious. This type of seizure is usually for a few minutes, but in rare cases can last up to 15 minutes.

Febrile seizures stop on their own while the fever persists until treated. While some children may feel sleepy afterwards, others do not have lasting effects.

Seizures in toddlers may be caused due to the following factors

Epilepsy

Epilepsy is defined categorically as two or more seizures without any acute cause. Epilepsy can occur at any age, but it is usually diagnosed in infants and young children.

Body temperature

Body temperature may indicate a crisis in small children. High body temperatures or low body temperature can cause seizures in a toddler. These types of seizures occur only once or twice in children two years or younger, often after an illness. This type of seizure due to the fortification of the body temperature is considered a febrile convulsion.

Dehydration

Febrile seizures can also occur due to dehydration. Dehydration is a direct result of a previous illness that included sweating and fever.

Physical condition

A child who is in poor physical condition can also be prone to seizures. Malnutrition or a body weakened by disease or illness makes small children more susceptible to crises.

Family History

Family history can play a role in toddlers or children with seizures. If a family member suffered from the tendency or had convulsions, particularly febrile seizures as a child, this trait can be inherited.

Treating febrile seizures

If your child has a febrile seizure, stay calm and:

Make sure your child is in a safe place and does not fall or hit something hard
Place your child on his side to prevent choking
Watch for signs of breathing difficulties, including any colour change in the face of your child
If the seizure lasts more than a few minutes or your child turns blue, it may be a more serious type of seizure; connect with doctors immediately

Febrile seizures can be frightening to witness, but remember they are fairly common and are not usually a symptom of a serious disease, and in most cases does not lead to other health problems.

How Serious Are Seizures in Children

Acoustic neuroma is the development of noncancerous and slow-growing tumors on the main, vestibular nerve that travels from the inner ear to the brain, connecting the two organs. They are also known as vestibular schwannoma, as it arises from Schwann cells covering the vestibular nerve. It rarely grows rapidly or attains a large enough size that can press against the brain and interfere with the vital functions of the brain. Since the tumor is benign, the patient can be assured that it won t spread to the other parts of the body; however, they can grow large enough to disrupt the normal function of the body.

The pressure from the acoustic neuroma on the main nerve can cause loss of hearing, a constant ringing in the ear and unsteadiness. As per a report published by the Acoustic Neuroma Association, 1 out of every 50,000 people suffers from this condition.

Risk factors for acoustic neuroma
Acoustic neuroma does not have quite as many risk factors. The only established risk factor for acoustic neuroma is having a parent who suffers from the rare genetic disorder neurofibromatosis 2 (NF2). However, having said that, neurofibromatosis 2 (NF2) accounts for only 5 percent of the reported cases. In most of the cases, it has been found that the tumors appear spontaneously without any indication of a family member having this disease or any medical history of the same.

The development of noncancerous tumors on the ear nerves as well as other nerves in the body is scientifically supported as a characteristic indication of neurofibromatosis 2 (NF2). Neurofibromatosis 2 (NF2) is also termed as an autosomal dominant disorder, which indicates that the mutated gene can pass from just one parent. Each of the children has a fifty-fifty chance of inheriting the disease.

However, scientists and doctors have failed to identify why specific people get these tumors. They have reached a generic conclusion about the risk factors, which may include:

Loud noises near the ear.
A parathyroid neuroma, which is a similar benign tumor of the thyroid.
A chance of exposure to low levels of radiation in the childhood.
How to diagnose the risk factors for acoustic neuroma?
If you are experiencing loss of hearing or other neurological symptoms, try to keep track of them. Later on, mention them to your doctor for a proper diagnosis. A detailed history of the symptoms will help your doctor. Your doctor will perform a hearing test to check whether you have an acoustic neuroma. Then the doctor may perform a brainstem auditory evoked response tests along with an electronystagmography to detect any changes in eye movement, caused due to the inner ear. MRI and CT scans are also quite common diagnoses methods for acoustic neuroma.

Acoustic Neuroma - What Are The Risk Factors?

Injuries are very common, especially head injuries are one of the leading causes of death and disability in adults. As per surveys conducted, 1.7 million people suffer from head injuries every year and this estimation is increasing day by day.

There are several types of head injuries from mild as a cut, bruise, bump, contusion to severe ones caused due to a concussion, fractured skull bone, deep cut, internal bleeding, brain damage, etc.

A head injury is a comprehensive term which consists of an array of injuries that damage the skull, scalp, brain, and blood vessels and tissues in the head. It is generally referred to as a traumatic brain injury (TBI) and brain injury, depending upon the type and extent of trauma.

Causes of Head Injury-

A head injury can occur due to many reasons. Some common causes of these head injuries are:

Vehicle accidents

Domestic violence

Street fights

Fall from height

Child abuse

Subdural hematomas

Brain hemorrhages

Symptoms of Head Injury-

A head injury is followed by various symptoms depending upon the intensity of the injury. Here is a list of all the possible symptoms of brain injuries:

Nausea and vomiting.

Fatigue or sleepiness.

Extreme headache.

Confusion.

Loss of muscle control or paralysis in the part of the body controlled by the part of the brain that is affected.

Coma.

Dilation of the pupils and related visual problems; Blurred vision, photosensitivity, blindness, loss of muscle control in the eyes.

Cerebrospinal fluids might come out of the ears and nose, sometimes accompanied by blood.

Problem breathing.

Low pulse rate.

Increase in blood pressure.

Difficulty in swallowing.

Loss of hearing.

Problems in cognitive functions.

Numbness or tingling in the limbs.

Loss of bladder and bowel control due to loss of control over muscle functions.

Loss of consciousness.

Treatment of Head Injury-

Diagnosis of a brain injury has to be detailed and very quick at the same time. It always comes under emergency cases. Some of the steps involved are:

Cardiac and pulmonary function test.

Glasgow Coma Scale test.

Pupil dilation and corneal function test.

Brain stem reflex tests.

The most common way of diagnosis is the use of CT scans and MRI scans.

A severe head injury often needs surgery to reverse symptoms like chronic fatigue, bleeding, or loss of bodily function. Diagnosis involves finding out the type and severity of the injury and treatment involves removing the problem surgically.

Take Away-

Head injuries take time to heal, but medical treatment along with neurosurgery can aid the process of recovery and also help a person to lead a healthy life in the future. Most young patients recover fully, while some older patients or patients with preexisting neurological conditions live with a degree of disability.

All You Must Know About Head Injury & Its Treatment!

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