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This Is Your Brain on Exercise

Neuron Magic

After exercise, the brain actually builds neurotransmitters, which are essential to its functioning, and optimal operation.

It also forms more neuron connections, helping us think and work better.

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Thomas Edison said that sleep is "a bad habit." Like Edison, we seem to think of sleep as an adversary and try to fight it at every turn. The average American sleeps less than the recommended seven hours per night, mostly due to electric lights, television, computers, and smartphones. 

However, we are ignoring the intricate journey we're designed to take when we sleep.

Stage One Sleep

When we fall asleep, the nearly 86 billion neurons in our brain starts to fire evenly and rhythmically. Our sensory receptors become muffled at the same time.

The first stage of shallow sleep lasts for about 5 minutes.

The olfactory sense at work
The olfactory sense at work

Our sense of smell works in wondrous ways since the chemical composition of our surrounding change instantly and constantly. Our noses pick up volatile airborne compounds that interact with...

Facts about our olfactory sense
  • It is different from other sensory cortices in a way that it has a multidimensional stimulus.
  • Some things can smell different not just between different people but also for the same person.
  • Can measure an array of an uncertain variety of chemicals that can trace changes that detects pleasure, pain, or danger.
  • It does not require a map mirroring because its chemical stimulus is constantly changing. It relies on the brain to recognize the pattern or memory associated with the smell.
Contributors to the study of the olfactory sense
  • Santiago Ramón y Cajal: A founding father of neuroscience, he drew attention to the sense of smell as an exemplary model to learn how the brain makes sense of the world. He also believed that understanding smell would grant us better insight into other sensory systems
  • Linda Buck & Richard Axel: They discovered the olfactory receptors which happened to be the most structurally diverse and sizable member of the largest multi-gene family of protein receptors. They received the 2004 Nobel Prize in Physiology or Medicine.