Methods for stimulating exocytosis from a cell are provided where the same electrochemical microelectrode is used to electroporate an adjacent cell and then measure quantal exocytosis from the adjacent cell. Also provided are methods for stimulating and measuring exocytosis from a select cell population arrayed on a chip comprising addressable electrodes. Calcium independent stimulation of exocytosis with inorganic anions such as chloride ions is also provided. These methods can provide for specific stimulation of a desired subset of cells without exposing other nearby cells to the stimulus.
