Nerve Responses (IMAGE) Nagoya University Caption Single presynaptic neuron evokes opposing activity in a postsynaptic neuron to encode the valence of sensory stimuli Credit Shunji Nakano & Ikue Mori Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.