Topic: IEG BLUsH

Our ability to develop, learn, and adapt depends on the brain’s capacity to change over time. To analyze plasticity processes over time in individual animals, we introduced a novel technique that enables immediate-early gene (IEG) activity to be mapped noninvasively using magnetic resonance imaging (MRI). Using this method, called IEG BLUsH, we interrogated the spatiotemporal relationships between neural activity and plasticity gene induction in an opioid administration paradigm. IEG activity and functional MRI (fMRI) signals were recorded following fentanyl treatments lasting several days (Fi