The following statements all refer to the human brain when mental activity is occurring. Which statement is correct?
a. In order to detect electric currents in the brain, you must open the skull and make direct electrical contact with the brain.
b. The electric currents in the brain can be detected outside the brain by detecting the magnetic fields they produce. c. The electric currents in the brain can be mapped by shaving a person's head and dropping iron filings on the head. d. The electric currents in the brain produce an aura that can be detected visually.
e. The electric currents in the brain cannot be detected by any means.
Question 2
The reason the north pole of a bar magnet free to rotate points north is because
a. the south geographic pole of the earth is the earth's magnetic north pole. b. the south geographic pole of the earth is the earth's magnetic south pole. c. there is a net accumulation of negative magnetic charge at the earth's south geographic pole. d. there is a net accumulation of positive magnetic charge at the earth's north geographic pole. e. the north geographic pole of the earth is the earth's magnetic north pole.
The early stages of the human life cycle.
Computed tomography (CT) uses X-rays to create a CT scan of the brain.
Structure of human immunodeficiency virus
Mosaic X Chromosome Expression in Human Females
A transgenic mouse carrying a mutation in the human SOD1 gene that causes paralysis of the limbs. In
Partial map of disease genes on human chromosome 21