Brain (BP)

Question 1

What percentage of the body is the human brain?

Answer 1

2%

Question 2

Number of neurons our brain contains.

Answer 2

86 billion

Question 3

What are the 3 divisions of the brain?

Answer 3

Brain stem
Cerebellum
Cerebral hemispheres

Question 4

Function of the brain stem

Answer 4

To regulate respiration (breathing), heart rate, and digestion.
Also involved in sleep-wake-cycle, sensory, and motor function, growth, and hormone regulation.

In some countries losing brain stem function means the person can be declared ‘brain dead’

Question 5

4 parts of the brain that makes up the brain stem

Answer 5

a) Medulla
b) Pons
c) Midbrain
d) Diencephalon (Hypothalamus and thalamus)

Question 6

What are lesions?

Answer 6

Removing parts of the brain (usually in animals) to observe changes in behavior.

Question 7

What is the difference between TMS and tDCS?

Answer 7

Transcranial Magnetic Stimulation (TMS) -
a magnetic impulse is applied to a part of the cortex which induces a weak electrical current. This current interferes with neuronal communication. It has a good temporal resolution.

Transcranial Direct Current Stimulation (tDCS) uses electrical current directly through electrodes placed on the skull; it lasts for a longer period of time than TMS.

It’s also known to improve cognitive abilities such as; mathematical skills, memory, attention, and coordination.