Hyperpolarization is due to: (A) Influx of chlorine, (B) Influx of potassium, (C) Influx of sodium, (D) All
Answer is A. In hyperpolarization the membrane becomes more negative It is due to continued potassium efflux or chloride ion influx. Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:67,68,69