TABLE 3.

Subjective impression ratings that a NFB cognitive state was helpful in decreasing the BIS value and their associations with objectively measured nadir and mean BIS NFB values.

	Nadir NFB BIS		Mean NFB BIS
Subjective Ratings	r-value	p-value	r-value	p-value
Widening Visual Field	−0.35	<0.0001	−0.24	0.0003
Decreasing Effort	−0.32	<0.0001	−0.41	<0.0001
Attention to Space	−0.26	<0.0001	−0.17	0.0095
Relaxing	−0.42	<0.0001	−0.47	<0.0001

BIS, Bispectral Index^TM; NFB, neurofeedback.