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?

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.

Head Injury is any trauma to head other than superficial injuries to face. It results in high morbidity & mortality. Head injuries are an important cause of loss of young people at their productive age.

Causes of Head Injury-

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

Vehicle accidents

Street fights

Fall from height

Child abuse

Symptoms of Head Injury-

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

Nausea and vomiting, fatigue or sleepiness, severe headache, confusion, amnesia,  loss of consciousness, seizures, 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 disturbance of vision, Cerebrospinal fluids might come out of the ears and nose, sometimes accompanied by blood, difficulty in breathing, low pulse rate, increase in blood pressure, difficulty in swallowing, loss of hearing, problems in cognitive functions.

Brain damage is a process, not an event. 80% are minor head injuries, 10% are moderate head injuries and 10% are major head injuries.

Management 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:

Glasgow Coma Scale

Pupillary reaction to light

Brain stem reflex tests

Head to toe examination

CT scan of head is the initial study of choice. MRI Brain is helpful in cases of non-haemorrhagic contusions, diffuse axonal injury and deep lesions.

Surgical Indications

Head injuries with intracranial hematomas causing significant mass effect

Massive cerebral edema

Hydrocephalus

Infection

Precautions for Head Injury

Use Helmets- both riders

Use Seat Belts

Keep vehicle speed under control

Follow traffic rules

Take adequate precautions during trekking, diving

Take Away-

No head injury is minor enough to be neglected nor severe enough to be given up.

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.



Head Injuries - All You Must Know!

Cerebral palsy is a neurologic condition that occurs in children, and is due to brain injury that develops before, during, or after childbirth. The condition presents with motor impairment, and therefore there is generalized physical and mental dysfunction. The brain continues to develop for the first two years of life, and so conditions like premature birth, asphyxia at birth, and postnatal meningitis and encephalitis.

The diagnosis could be trigged by the slow motor development, poor muscle tone, and delayed response of the baby. One of the main noticeable feature that becomes evident is the spasticity of the limbs. The child may not be able to voice it out, but pain is a significant disabling factor too. While doctors would advise that physical movement is required to keep the spasticity at bay, the pain keeps the child away from most activities. This further adds to the spasticity and worsening of the condition.

Pain control therefore assumes a significant role and the modes can range from physical therapy to pain killers to injections to surgery. The idea, in addition to pain control, is also to:

Improve range of motion
Improve motor response
Promote good motor development
Reduce and control contractures
Improve overall lifestyle
Improve muscle strength
Improve exercise tolerance
Reduce spasticity
Some of the non-medical ways to control pain are listed below. 

Of course, pain killers and injections are always used when immediate relief is required. A structured physical therapy program that includes medications and exercise is the best way to manage cerebral palsy pain. Though initially difficult, over a period of time, it improves range of motion and improves joint movement.

Acupuncture: Triggering specific points via needles is believed to stimulate the nerve endings and help in pain control
Alternating ice and heat therapy: This is also believed to improve pain control, blood circulation, and muscle movement.
Positioning in bed: A well-positioned child in bed may have less pain compared to another child who is not. Special equipment may be used also to keep the child in place, once the most comfortable situation is located.
Muscle massage: The affected muscles need to be massaged repeatedly so that blood flow improves, joint movement is better, and pain is controlled.
Botox is successfully used to pain control, as it paralyzes the specific muscles along with providing pain control.
Medications are used regularly, which are mainly anticholinergic and anti-spastic medications. They reduce stiffness, control pain, and help in pain control too.
Surgery is the last option and needs to be explored with the doctor.

Pain Management Of Spasticity With Cerebral Palsy!

A tumor is an uncontrolled and abnormal growth of cells. A brain tumor is thus an abnormal growth and multiplication of cells in the brain. The cell growth can also be in areas adjacent to the brain. The brain tumor may

Have its origin in the brain (Primary brain tumor), or
Its origin may be in some other parts or organs of the body, which gradually spreads to the brain (Secondary/metastatic brain tumor).
Not all brain tumors are harmful and life threatening.

Brain tumors that exist as noncancerous cell growths are known as Benign brain tumors. Benign brain tumors seldom pose any threat to life.

Brain tumors that are cancerous and, thus, harmful, are known as Malignant brain tumors.

Do not neglect any brain tumors (malignant or not). It is better to be safe than to be sorry.

Types of Primary brain tumors:

Based on its cell of origin, primary brain tumors (benign as well as malignant) may be of the following types:

Meningiomas: Brain tumors that originate from the meninges (the membranes that cover the brain and the spinal cord). Meningiomas are seldom malignant.
Acoustic Neuromas: A noncancerous cell growth that has its origin in the vestibulocochlear nerve (the eighth cranial nerve). This nerve connects the brain with the inner ear.
Gliomas: Here, the tumor has its origin in the brain and the spinal cord (glial cells). This type of brain tumors, in most cases (~80%), are malignant.
Primitive Neuroectodermal Tumors (PNETs): Extremely rare, PNETs are malignant tumors that develop in the embryonic cells in the brain.
Medulloblastomas: Medulloblastomas is a malignant brain tumor that mostly affects children. It originates in the cerebellum (lower part of the brain).
Craniopharyngiomas: A benign brain tumor that has its origin near the pituitary gland (base of the brain). Craniopharyngiomas are common in children.
Probability of a secondary brain tumor are more in people who have had;

Kidney cancer
Breast cancer
Lung cancer
Colon cancer
Melanoma
Symptoms:

The symptoms of brain tumor include:

Chronic and regular headaches.
A change in the headache pattern.
Seizures.
A person may experience vision problems (Peripheral vision may be affected, double or blurred vision).
There may be difficulty in hearing.
Nausea and vomiting.
Behavioral and speech problems.
An arm or a leg may lose sensation.
A person has difficulty with balance.
Diagnosis and Treatment:
Though brain tumor can affect anyone and everyone, its chances are higher in

People who are more exposed to ionizing radiation. People having undergone a radiation therapy are equally vulnerable.
Children as well as older people.
People having a family history of brain tumors.
The diagnosis includes;

An imaging test like the MRI, CT scan and PET (Positron Emission Tomography).
Biopsy, whereby samples of the abnormal tissue is collected and examined.
Neurological examination.
Treatment:

Surgery is an effective treatment for brain tumors.
One can also opt for:

Radiations, whereby the abnormal tumor cells are destroyed using protons and x-rays (high-energy beams).
Chemotherapy: In this treatment, the tumor cells are destroyed using strong drugs (taken orally or intravenously).
Radiosurgery.
Targeted drug therapy: This treatment blocks the abnormalities that are characteristically present only in the cancer cells.

Brain Tumors: Types, Symptoms, Diagnosis, and Treatment

For diabetics, healthy eating is essential. This can be the most important tool available in managing diabetes and blood sugar fluctuations. This is because what a person eats has a direct effect on their blood sugar levels. When food is digested, it is broken down into a form of sugar known as glucose. This powers the body and acts as an energy source. For this, the body needs insulin. In the case of diabetics, insulin does not function the way it should or is not present in the required amounts. This causes the glucose to remain in the blood and in turn spikes blood sugar levels. The good news is that diabetes can be controlled. This is where the person s diet plays an important role.

Not all food causes an increase in blood sugar levels. The effect of a food item on a diabetic depends on how it affects the body s ability to process glucose. Processed foods, fatty foods, food with added sugar etc. can cause a spike in blood sugar levels. However, fruits and vegetables do not have the same effect. Foods that have a high glycemic index do not keep a person satiated for long but cause blood sugar fluctuations. On the other hand, foods with a low glycemic index do not cause blood sugar fluctuations and keep hunger satiated for longer. Hence, the former should be avoided as far as possible. Replace processed grains with whole grains, red meat with lean meat or fish and add plenty of beans and legumes to your diet. Trans fats should also be avoided.

Eating right can also help with weight management. Being overweight puts additional pressure on the insulin available which leads to frequent blood sugar fluctuations. Eating right accompanied by regular exercise is crucial to weight management. Keeping your weight under control can even help prevent diabetes especially in cases, where a person has a high genetic risk of developing diabetes. This can also help reduce the risk of further complications.

When it comes to diabetes, eating at the right time is as important as eating the right food. Diabetics should not leave long gaps between their meals. This is because having a gap of more than 3 hours can destabilize blood sugar levels and be dangerous for the patient. Hence, a diabetic should eat smaller, more frequent meals. It is also a good idea for a diabetic to monitor sugar levels before going to sleep and after waking up.

Importance Of Diet Management In Diabetes!

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