Designation of impact type | Impact description |
A | Shortening of the current refractoriness causes the next one to be longer |
B | High-energy suppression of the next refractoriness causes a longer third refractoriness |
C | Shortening of the next refractoriness causes a longer third refractoriness |
D | Low-energy suppression of the next refractoriness causes a longer third refractoriness |