Table 2.

Slow wave extracellular potential characteristics for suction and conventional extracellular methods

	Suction	Conventional	Significance
Morphology	Monophasic	Biphasic
Downstroke rate (μV s−1)	−1000 ± 460	1120 ± 490	P < 0.0001
Amplitude (μV)	652 ± 178	399 ± 144	P < 0.0001
Frequency (cycles min−1)	3.6 ± 0.3	3.6 ± 0.2	P= 0.99
Activation– recovery interval (s)	6.2 ± 0.4	6.1 ± 0.5	P= 0.15

Morphology features differed, but frequency and activation– recovery interval were highly consistent between the two recording methods.