Sep 29, 2012

Brain Trivia

How many thoughts does the average person have each day?

Alzheimer's Reading Room

Brain Trivia
How much does the average adult human brain weigh?
3 lbs.

How much did Albert Einstein's brain weigh?
2.71 lbs., significantly less than the average human brain, but he had many more glial cells than average

At approximately what age does the brain stop growing?
18 years of age.

The forebrain, which controls higher intellectual functions such as thinking, planning, and problem solving, is the largest in what species?
Humans

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How many thoughts does the average person have each day?
70,000


Which hemisphere of the brain has more neurons?
The left hemisphere has 186 million more neurons than the right hemisphere

How much blood flows through the brain per minute?
750-1000mL or 3 full soda cans

How long can the brain survive without oxygenated blood?
4-6 minutes before the cells begin to die. After 10 seconds you loose consciousness

How much of your body heat is lost through your head?
40-50%

What is the longest living cell in your body?
Your brain cells can live up to an entire lifetime

How many brain cells (neurons) does the average human have?
100 billion

What is the name of the chemical signal used between neurons?
Neurotransmitters

How long can a neuron be?
Around 15 feet, in a Giraffe, from toe to neck

How many brain imaging techniques can you name?

12 total: Magnetic Resonance Imaging (MRI), functional Magnetic Resonance Imaging (fMRI), Diffusion Tensor Imaging (DTI), Magnetic Resonance Spectroscopy, Positron Emission Tomography (PET), Optical Intrinsic Signal (OIS), Computed Axial Tomography (CT), Diffuse Optical Imaging (DOI), Event-Related Optical Signal (EROS), Electroencephalography (EEG), Magetoencephalography (MEG), Single Photon Emission Computed Tomography (SPECT)

Source LONI





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