ENGR 093: Biomedical Directed Reading Spring 2004
 Home Hodgkin and Huxley's work Biology History Table of Units References

 SI Table

During the course of our research, we have found that the units used in the explanations of the Hodgkin and Huxley model in common textbooks often disagree. This can make it difficult for students looking at the model for the first time to get a good sense of what is going on. In an effort to help alleviate some of the confusion, the table below consistes of values and units found in popular textbooks and have been converted into SI Units. Note that the equations used are based off thosed depicted in the Enderle and Schwann texts. Due to inconsistences between the two resources, where Schwann used a voltage, a negative voltage equal in magnitude but opposite in sign was used.

System International (SI) Units

 Symbol Units Quantity Notes GNa S/m² 0.12 GK S/m² 0.036 GL S/m² 0.0003 VNa V 0.055 VK V -0.072 VL V -0.0494 gNa V/m² gNam3h gK V/m² gKn4 gL V/m² gL ah 1/s bh 1/s am 1/s bm 1/s an 1/s bn 1/s ho 1 ah/(ah+bh)=0.596 th s 1/(ah+bh) mo 1 am/(am+bm)=0.053 tm s 1/(am+bm) no 1 an/(an+bn)=0.318 tn s 1/(an+bn) Cm farads