I'm interested in episodic memory, which is the ability we have to encode and later remember the unique events from our lives. My research uses two non-invasive measures of brain activity – functional magnetic resonance imaging (fMRI) and electroencephalography (EEG) – to provide an understanding of the neural processes that underlie this ability.
I'm particularly interested in addressing questions such as:
How does retrieving a memory involve re-engaging the thoughts, emotions, and perceptions that were associated with an event?
Why do we sometimes consciously remember the details surrounding an event, but other times feel as though the event is merely familiar?
How do the different regions of the medial temporal lobe (such as hippocampus and parahippocampal cortex) contribute to various aspects of episodic memory?
For PDF copies of available papers, please visit the lab website.
Johnson, J.D., Price, M.H., & Leiker, E.K. (in press). Episodic retrieval involves early and sustained effects of reactivating information from encoding. NeuroImage.
Li, D., Christ, S.E., Johnson, J.D., & Cowan, N. (in press). Attention and Memory. Brain Mapping: An Encyclopedic Reference (Eds. Arthur W. Toga & Russell Poldrack).
Rugg, M.D., Johnson, J.D., & Uncapher, M.R. (in press). Encoding and retrieval in episodic memory: Insights from fMRI. In: The Wiley-Blackwell Handbook of the Cognitive Neuroscience of Memory (Eds. Audrey Duarte, Morgan Barense, & Donna Rose Addis).
Leiker, E.K., & Johnson, J.D. (2014). Neural reinstatement and the amount of information recollected. Brain Research, 1582, 125-138. [PubMed]
Johnson, J.D., Suzuki, M., & Rugg, M.D. (2013). Recollection, familiarity, and content-sensitivity in lateral parietal cortex: A high-resolution fMRI study. Frontiers in Human Neuroscience, 7, 219. [PubMed]
Rugg, M.D., Vilberg, K.L., Mattson, J.T., Yu, S.S., Johnson, J.D., & Suzuki, M. (2012). Item memory, context memory and the hippocampus: fMRI evidence. Neuropsychologia, 50, 3070-3079. [PubMed]
Yu, S.S., Johnson, J.D., & Rugg, M.D. (2012). Dissociation of recollection-related neural activity in ventral lateral parietal cortex. Cognitive Neuroscience, 3, 142-149. [PubMed]
Yu, S.S., Johnson, J.D., & Rugg, M.D. (2012). Hippocampal activity during recognition memory co-varies with the accuracy and confidence of source memory judgments. Hippocampus, 22, 1429-1437. [PubMed]
Suzuki, M., Johnson, J.D., & Rugg, M.D. (2011). Decrements in hippocampal activity with item repetition during continuous recognition: An fMRI study. Journal of Cognitive Neuroscience, 23, 1522-1532. [PubMed]
Suzuki, M., Johnson, J.D., & Rugg, M.D. (2011). Recollection-related hippocampal activity during continuous recognition: A high-resolution fMRI study. Hippocampus, 21, 575-583. [PubMed]
Johnson, J.D., McDuff, S.G.R., Rugg, M.D., & Norman, K.A. (2009). Recollection, familiarity, and cortical reinstatement: A multi-voxel pattern analysis. Neuron, 63, 697-708. (first two authors contributed equally) [PubMed]
Johnson, J.D., Muftuler, L.T., & Rugg, M.D. (2008). Multiple repetitions reveal functionally- and anatomically-distinct patterns of hippocampal activity during continuous recognition memory. Hippocampus, 18, 975-980. [PubMed]
Johnson, J.D., Minton, B.R., & Rugg, M.D. (2008). Content-dependence of the electrophysiological correlates of recollection. NeuroImage, 39, 406-416. [PubMed]