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?

The neurones in the brain are constantly reorganising their connections both functionally and physically according to the environment, your thinking and behaviour. This ability is known as neuroplasticity. Through neuroplasticity the nerve cells of brain can compensate for injury to some parts of the brain and enable a person to recover from stroke, birth abnormalities. It is also beneficial in treating autism, ADD, learning disabilities and helps manage obsessive compulsive disorders.

Here are seven things you should know about neuroplasticity.

Change depends on the attentiveness of the brain: Neuroplasticity changes can only happen if the brain is alert and active. When the brain is active it releases neurochemicals that are necessary for the neurone connections to change. If a person is distracted to inattentive, these changes cannot happen.
The more the effort; the bigger the change: Neuroplasticity changes depend on how motivated the person is to change or learn new tasks. For this reason, when it comes to using neuroplasticity for physiotherapy, it is essential to first deal with any depression or anxiety issues the patient might be having before attempting to rehabilitate them.
It helps strengthen neural connections: Repetition of actions is one of the key elements of neuroplasticity in physiotherapy. Through this, the strength of neurone connections is strengthened to include sensory information, movement and cognitive patterns.
It improves cell to cell connections: This is crucial to a patient s rehabilitation as it increases reliability and makes a person more independent. In turn, this makes behaviour patterns more reliable.
It helps predict actions: A task can usually be broken down into a series of smaller tasks. For example, feeding oneself can be broken down into steps that begin with lifting a spoon and filling it with food to finally putting the spoon into your mouth. Hence, along with completing an action, the brain must also know what to do next. Neuroplasticity helps improve this associative flow and allows the brain to predict the next step.
Changes can be temporary or permanent: Initial changes due to neuroplasticity are temporary ad only if the brain determines the experience to be desired is this change made permanent. This is why when treating mobility issues, patients are not always able to repeat tasks in the same way.
Memory guides the learning: When making new neural connections through neuroplasticity, the brain is taught to discard unsuccessful attempts and only remember the experience of the successful attempts. From here, adjustments are made to improve the connection.

Neuroplasticity - 7 Things You Must Know About it!

Whether it's a child or a grown-up, difficulty in concentrating is often experienced by many people. While, people tend to brush off this particular problem to be nothing worth being concerned about, but sometimes, there may be a more serious underlying issue for which concentration problem is only a mere symptom. Yes, difficulty in concentrating can be a sign of a neurological disorder. Keep on reading to know more about neurological disorder, its symptoms, and treatment.

Reasons behind difficulty in concentrating
Inability to focus properly is a periodic and normal occurrence for many. While sometimes it is the emotional stress or physical tiredness that is responsible for it, at times it is the outcome of hormonal changes in the body, such as during pregnancy or menopause that causes it. However, when experienced in severe degrees, it may be a characteristic of a serious psychological condition called neurological disorder. Affecting both adults and the children, the neurological disorder can be a serious threat if not treated at the right time.

Neurological disorder
Neurological disorder refers to any condition that happens due to the dysfunction of the nervous system or the parts of the brain. Depending on the location of the damage to the nerve or in the spinal column or the brain, different areas controlling the vision, movement, thinking or hearing can be severely affected. The decreased ability to focus on something or loss of concentration power being one of the many symptoms of neurological disorders among the various complications it causes.

Causes behind neurological disorder
Many reasons lead to neurological disorder or its associated symptoms like difficulty in focusing. From lifestyle-related issues to nutrition related causes, physical injuries to some infections, complications during childbirth, and genetics to environmental influences, numerous factors can be responsible for such disorder. Depending on the type of neurological disorder, the symptoms can vary from to another, while for some difficulty concentrating can be a symptom, for some, the symptoms can be more of physical difficulties such as problems in walking or difficulty speaking or seeing, etc.

Dealing with difficulty concentrating
Once the cause of the neurological disorder is determined, there are various treatment options, offered by the doctors. To deal with the neurological disorder as the cause of difficulty concentrating one may need medications and treatment provided by the medical professionals. However, there are a few tips that one can keep in mind, such as minimizing multitasking and focusing on one single thing or thought at one time or dividing tasks into small steps, etc.

Difficulty in concentrating means the ability to focus on thoughts or action decreasing. In case one experience this issue on a long term basis or excessively, visiting the neurologist as soon as possible should be the best thing to do.

Problem In Concentrating Could Be A Sign Of Neurological Disorder!

Trigeminal neuralgia is specified by the condition of a chronic pain that influences the trigeminal nerve. This nerve transfers sensation from one s face to his/her brain. If a person is suffering from trigeminal neuralgia, then a gentle stimulation of face (sourced from brushing teeth or applying makeup) might generate a fright of agonizing pain. The affected person might experience short and mild attacks initially. However, the trigeminal neuralgia might progress and generate more-frequently and longer attack of severely critical pain. Women get affected by this situation more than men get and it is more prominently occur in individuals older than 50 years.

Trigeminal neuralgia does not mandatorily mean that you need to experience a lifelong pain. Various types of treatment alternatives are available and so doctors can usually handle the particular condition effectively by taking help of injections, medications or surgery. Various types of triggers might cause the pain regarding trigeminal neuralgia, such as eating, drinking, shaving, brushing teeth, touching face, smiling, washing face etc.

Symptoms

The symptoms of trigeminal neuralgia might comprise of one or more patterns and some of these are described below:

Sequences of serious, jolting or shooting pain that might generate as an electric shock
Spontaneous pain attacks or attacks stimulated by different activities like face touching, speaking, chewing, or brushing teeth. Pain attacks last from a few moments to some minutes.
It is not a comprehensive list because Trigeminal neuralgia hosts various other symptoms as well. If a person feels facial pain, specifically recurring or prolonged pain or if the person does not get relief through the utilization over-the-counter pain relievers, then that person must consult a doctor.
How does Radiofrequency Ablation treat Trigeminal Neuralgia?
Trigeminal Neuralgia is a chronic and painful condition that involves the trigeminal nerve. There are two separate trigeminal nerves on both sides of the face, which carry the sensations like pain from the face to the body. Each nerve has three branches- forehand, midface and chin and trigeminal neuralgia can cause intense pain in any of these areas.

Causes-

This occurs when the trigeminal nerve functioning is disrupted. When the blood vessel/artery and the trigeminal nerve at the base of your brain come in contact, it puts pressure on the nerves and causes pain.
It also occurs as a result of ageing or multiple sclerosis
A disorder that damages the myelin sheath protecting the nerves can trigger pain
Sometimes pain occurs from tumors, which compresses the trigeminal nerves
Surgical strokes, facial trauma or strokes can also be the root cause of excruciating pain
Triggers-

Shaving
Touching your face
Eating and drinking
Putting on makeup
Brushing
Washing your face
Symptoms-
The pain can be mild and for a shorter duration or it can happen frequently for longer durations. Some experience the pain in cycles where it can come and go for days or even for weeks. Gradually the intensity of the pain lessens.

Cure by Radio-frequency Ablation
The treatment of trigeminal neuralgia is often a challenging process in clinical practice. When medicines do not prove as effective, surgery is the desired option.

Procedure-

After applying local anaesthesia, the Pain Specialist carefully inserts a needle through the corner of your mouth to reach the trigeminal nerve
The doctors then wake up the patient after stimulating the nerves and ask them to feel the stimulation at the same place where they undergo pain. This confirms their targeted location
Once you fall asleep again, the Pain Specialist uses radiofrequency heat to injure the nerve enough to create numbness and removes the pain
How Effective is Radio-frequency Ablation?
The pain is cured almost in 98% of the patients. 50% of patients report recurrence of pain after about two years. Hence the procedure can be repeated in the same patient if necessary.

Trigeminal Neuralgia And Radio-Frequency Ablation - What Causes It?

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?

Acoustic vestibular schwannoma or the acoustic neuroma is a kind of tumour. But this tumour is benign which means it is non-cancerous. The vestibular nerve connects your ear to your brain, it is responsible for hearing and balancing. An acoustic neuroma develops on the vestibular nerve. And it can cause hearing impairment.

How does acoustic Vestibular Schwannoma occur? 
The vestibular nerve is lined with Schwann cells. Sometimes, these cells start to develop rapidly. This forms a mound on the nerve, it slowly becomes large enough to prod against the brain, and this adversely affects the actions of the brain.

What are the Symptoms?
In the early phases, the tumour does not trigger any symptoms. They begin to manifest once the tumour starts expanding. Here is a list of the symptoms of acoustic vestibular schwannoma-
  Gradual hearing loss
  Misalignment and losing balance
  Ringing in the ears.
  Regions of numbness in your face
Even though these tumours are benign, sometimes they enlarge to such an extent that they can be harmful to the brain. As soon as you witness the above-mentioned symptoms, book an appointment with a doctor.
With timely treatment and medication, doctors can reverse the growth of an acoustic vestibular schwannoma. 

What triggers this Disease?
The exact cause of this disease is not known. It could be any one of the following-
  A chromosomal anomaly or a malfunctioning gene
  Inhibition in the function of the protein suppressor that regulates the growth of Schwann cells

How is Acoustic Vestibular Schwannoma detected?
Your doctor will recommend these tests-

  Audiometry -
The audiologist will present sounds at different frequencies and you will have to make a gesture whenever you hear a sound. This will reveal the state of your hearing.

  Magnetic Resonance Imaging -
An MRI can detect the presence of a tumour that is 1-2 mms in diameter. If MRI causes pain or discomfort, a CT scan will be done.

Treatment -
If the tumour is tiny, your doctor won t prescribe medicines but your tumour will be monitored and imaged regularly so that the proper action can be taken as soon as it begins to enlarge.

  Surgery -
If the tumour is large, then you might have to undergo surgery. Not only will the tumour be removed, but also care will be taken to preserve the facial nerve so that facial paralysis does not set in.
You will be placed under general anaesthesia. The surgeon will drill a small hole in your skull near the ears and extract the tumour through your inner ears.

  Radiation -
If the tumour is small or if the patient is elderly and surgery can cause complications, doctors suggest radiation therapy. In this therapy, gamma rays are directed towards the tumour to shrink it.
Acoustic vestibular schwannoma can be treated if diagnosed on time. So, if you have noticed any symptoms, talk to a doctor right away.

Acoustic Vestibular Schwannoma - All You Must Know About It!

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