Table 1 Comparison between Yamada, Solandt and Feng effect

Stimulus

Hypertonicity of the medium

Depolarization of membrane^b,c

Stretching^a,f

Threshold

Less than 2× normal osmolality

About −65 mV^b,c

To 1.2 × normal length^f

Maximal heat rate

30 – 50 mcal.g⁻¹. min⁻¹ (125 − 209  mJ. g⁻¹. min⁻¹)

40 mcal.g⁻¹. min^−1 c (167 mJ.g⁻¹. min⁻¹)

10 − 14 mcal.g⁻¹. min^−1 f (42 − 58 mJ.g⁻¹. min⁻¹)

Effect of anaerobic condition

Reduced to 1/10

Reduced to 1/10^c

Reduced to 1/2^a

Effect of procaine^g (<10 mM)

Substantially reduced

Suppressed completely^e

Potentiated^f

Effect of ouabain^h (10⁻¹ M)

Not affected

Not affected

–

In K₂SO₄ (isotonic)

Remains substantial

–

Remains normal^d,f