The effect of temperature changes on the activity on the neurones of the snail Helix aspersa

摘要: 1. 1. This paper describes the effect of changing temperature on sponteneous activity and resting potentials th snail nerve cells. 2. 2. Four types response were noted: (a) An increase in caused an frequency action potentials. A decrease a frequency. (b) transient was followed by increased frequency. Lowering brought about similar transient; for short time, then fell to rate lower than initial one. (c) In silent cell, i.e. one that did not show spontaneous activity, cooling whilst warming stopped activity. (d) Some cells any or cooling. 3. 3. The potential when decreased decreased. Q10–20°C varied from 1.04 1.96. 4. 4. many after change tended return their value (adapted), even if maintained at new level. 5. 5. results are discussed terms two theories. That behaviour individual changes with time. That there specific difference reactions cells.