표 3. | Table 3. ICNIRP 1998 Guidelines과 2010 Guidelines의 주요 차이점 | Major differences between ICNIRP Guidelines of 1998 and 2010.

Item	Guide lines	Main differences
Basic restrictions	1998	- Induced current density in the body
	2010	- Induced electric field strength in the body
Considered effects of the body	1998	- Prevent effects on nervous system functions.
		- Threshold for induced current density in central nervous system(It is not considered phosphene.).
	2010	- Used the threshold of phosphene for basic limiting exposure.
		- Included with effects on the central and the peripheral nervous tissues.
		- Internal electric fields were derived the conductivity of each tissue by anatomical models.
Reference levels	1998	- Used dosimetry quantities based on simple geometry models.
	2010	- Used dosimetry quantities based on anatomically specific body models.
Contact currents	1998	Avoid shock and burn hazards.
		- Reference levels for public is half of that for occupational(Considered threshold contact currents that elicit biological responses in children are one-half of that for adult men.).
		- Object is to prevent from painful shock.
	2010	- Equal guide lines 1998’s.