For example , if a stimulus is tripled in strength -LRB- i.e , NUMBER@1 x NUMBER@2 -RRB- , the corresponding perception may be two times as strong as its original value -LRB- i.e. , NUMBER@2 + NUMBER@2 -RRB- .

If the stimulus is again tripled in strength -LRB- i.e. , NUMBER@1 x NUMBER@1 x NUMBER@2 -RRB- , the corresponding perception will be three times as strong as its original value -LRB- i.e. , NUMBER@2 + NUMBER@2 + NUMBER@2 -RRB- .
