<prompt> True about summation -Temporal summation is application of two stimuli togetherSpatial summation is application of two stimuli one after anotherSubthreshold stimuli are usedAll are true  <response>: Ans. is c i.e., Subthreshold stimuli are usedSummationo A subthreshold stimulus does not produce a response, but when more than one subthreshold stimuli are applied response is produced.o The application of two subthreshold stimuli may be sufficiently quickly, one by another temporal summation or two subthreshold stimuli together at diferent places Spatial summation.o Summation is due summation of EPSP in synapses at post-synaptic neuron. 