The MR image is a map of the distribution of the MR signal, and by manipulating the timing of the RF pulses and the delays before detecting the signal MRI is a sensitive tool for detecting subtle changes in brain anatomy. However, mapping brain structure is not the same as mapping brain function.
John Adams was seen and identified as an early leader in the Continental Congress by his peers, and his influence greatly aided the formation of the Declaration of Independence and the cause of separation from Great Britain.
John Adams served in Congress for four years, from 1774 to the end of 1777. During this time Adams served in a total of ninety committees, of which he chaired twenty. At the end of 1777 John Adams was simultaneously involved in twenty six committees, he was chairman of eight.