Neurology/Neuroscience

Catnip: What do we know about the feline drug?

The internet is rife with funny cat videos showing their reactions to a plant commonly known as "catnip." What is catnip, does it affect all felines, is it safe for cats, and should humans use it? This Special Feature investigates these questions and more.
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Sugar alters brain chemistry after only 12 days

New research in pigs finds that sugar intake alters the reward-processing circuitry of the brain in a similar way to addictive drugs.
Whenever we learn something new or experience something pleasurable, our brain's ...
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20 causes of numbness in the hands

A number of conditions can cause the hands to feel numb. When a person has a sensation of numbness in the hands, weakness and painful tingling sensations may also occur.

This article will explore some of the possible caus...
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What to know about oscillopsia

Oscillopsia is the sensation that the surrounding environment is constantly in motion when it is, in fact, stationary.

Oscillopsia is usually a symptom of conditions that affect eye movement or the eye's ability to stabilize images,...
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New study could 'drastically' change how we understand Parkinson's

The hallmark symptoms of Parkinson's disease are motor symptoms that include shaking hands and slowness of movement, but specialists still do not entirely understand what causes this disease. Newly published research may now overturn prevailing notions about key Parkinson...
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What to know about vasovagal syncope

The term vasovagal syncope describes fainting that occurs in response to a sudden drop in heart rate or blood pressure. The resulting lack of blood and oxygen to the brain is what causes a person to pass out.
Doctors sometimes refer to vasovagal...
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Fragmented sleep may trigger migraine 2 days later

A new study finds that people whose sleep is fragmented during the night are at higher risk of experiencing a migraine episode not the next day, but the day after that....
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A key area of the brain is smaller in women on the pill

At the base of the brain is a small but crucial area that acts as a control hub for the nervous and hormonal systems. Now, a study has found that among women, it is significantly smaller in those using birth control pills....
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Why is it so difficult to say no to that piece of cake?

Using rats, researchers have discovered that a specific circuit in the brain seems to drive impulsive eating. Could this lead to a therapy for people who are dealing with the adverse effects of overeating?...
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What causes arm numbness?

Numbness in the arm has many possible causes that range from mild to severe. Simply sitting or sleeping in the wrong position can restrict the blood flow or put excess pressure on a nerve, making the arm go numb.
However, unexplained arm numbnes...
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