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.
Dopaminergic Pathways in a Rat Brain
The effect of pH on the activity of lysozyme
CSF Flow - Sagittal section of brain and spinal cord
A karyogram of the human chromosome set, showing the distinctive banding pattern of each chromosome.
Opener A colorized cross section of the human brain
Structures of the Human Eye