Data

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Cognitive Electrophysiology Data Portal

The below publications have available electrophysiological data. They generally fall into two categories: scalp EEG from the Penn Electrophysiology of Encoding and Retrieval Study (PEERS) and intracranial EEG from epilepsy patients collected mostly during the Restoring Active Memory (RAM) project.

The Computational Memory Lab stores our data using Box. To request access to the data folder for a specific publication, click the "Ephys Data" link for the desired publication.

Papers based on the ECoG/iEEG dataset collected as part of the RAM project may not be listed. To access to this data, please instead submit a request here and indicate that you are intending to use the RAM dataset.

For more information on requesting and downloading data, please click here.

Please also find our collection of behavioral testing data here.


2024

  • Schonhaut, D. R., Rao, A. M., Ramayya, A. G., Solomon, E. A., Herweg, N. A., Fried, I., et al. (2024). MTL neurons phase-lock to human hippocampal theta. eLife, 13, e85753.
    (pdf, code, Ephys data)

2022

  • Sakon, J. J. and Kahana, M. J. (2022). Hippocampal ripples signal contextually mediated episodic recall. Proceedings of the National Academy of Sciences, 119(40), e2201657119.
    (pdf, code, Ephys data)

2021

  • Adamovich-Zeitlin, R., Wanda, P. A., Solomon, E., Phan, T., Lega, B., Jobst, B. C., et al. (2021). Biomarkers of memory variability in traumatic brain injury. Brain Communications, 3(1).
    (pdf, code, Ephys data)

  • Kragel, J. E., Ezzyat, Y., Worrell, G. A., Sperling, M. R., Gross, R. E., Lega, B. C., et al. (2021). Distinct cortical systems reinstate content and context information during memory search. Nature Communications, 12.
    (pdf, supplemental, code, Ephys data)

  • Weidemann, C. T. and Kahana, M. J. (2021). Neural measures of subsequent memory reflect endogenous variability in cognitive function. Journal of Experimental Psychology: Learning, Memory, and Cognition, 47(4), 641–651.
    (pdf, code, Ephys data)

2020

  • Herweg, N. A., Sharan, A. D., Sperling, M. R., Brandt, A., Schulze-Bonhage, A., and Kahana, M. J. (2020). Reactivated spatial context guides episodic recall. The Journal of Neuroscience, 40(10), 2119–2128.
    (pdf, poster, code, Ephys data)

2019

  • Meisler, S. L., Kahana, M. J., and Ezzyat, Y. (2019). Does data cleaning improve brain state classification? Journal of Neuroscience Methods, 328.
    (pdf, code, Ephys data)

  • Solomon, E. A., Lega, B. C., Sperling, M. R., and Kahana, M. J. (2019). Hippocampal theta codes for distances in semantic and temporal spaces. Proceedings of the National Academy of Sciences, 116(48), 24343-24352.
    (pdf, code, Ephys data)

  • Weidemann, C. T. and Kahana, M. J. (2019). Dynamics of brain activity reveal a unitary recognition signal. Journal of Experimental Psychology: Learning, Memory, and Cognition, 45(3), 440–451.
    (pdf, code, Ephys data)

2017

  • Ezzyat, Y., Kragel, J. E., Burke, J. F., Levy, D. F., Lyalenko, A., Wanda, P. A., et al. (2017). Direct brain stimulation modulates encoding states and memory performance in humans. Current Biology, 27(9), 1251–1258.
    (pdf, code, Ephys data)

2016

  • Weidemann, C. T. and Kahana, M. J. (2016). Assessing recognition memory using confidence ratings and response times. Royal Society Open Science, 3, 150670.
    (pdf, code, Ephys data)

2015

  • Long, N. M. and Kahana, M. J. (2015). Successful memory formation is driven by contextual encoding in the core memory network. NeuroImage, 119, 332-337.
    (pdf, code, Ephys data)

  • Merkow, M. B., Burke, J. F., and Kahana, M. J. (2015). The human hippocampus contributes to both the recollection and familiarity components of recognition memory. Proceedings of the National Academy of Sciences, 112(46), 14378–14383.
    (pdf, Ephys data)

  • Ramayya, A. G., Pedisich, I., and Kahana, M. J. (2015). Expectation modulates neural representations of valence throughout the human brain. NeuroImage, 115, 214-223.
    (pdf, code, Ephys data)

2014

  • Geller, A. S., Burke, J. F., Sperling, M. R., Sharan, A. D., Litt, B., Baltuch, G. H., et al. (2014). Eye closure causes widespread low-frequency power increase and focal gamma attenuation in the human electrocorticogram. Clinical Neurophysiology, 125(9), 1764-73.
    (pdf, Ephys data)

  • Long, N. M., Burke, J. F., and Kahana, M. J. (2014). Subsequent memory effect in intracranial and scalp EEG. NeuroImage, 84, 488–494.
    (pdf, Ephys data)

  • Ramayya, A. G., Misra, A., Baltuch, G. H., and Kahana, M. J. (2014). Microstimulation of the human substantia nigra following feedback alters reinforcement learning. Journal of Neuroscience, 34(20), 6887–6895.
    (pdf, Ephys data)

2013

  • Miller, J. F., Neufang, M., Solway, A., Brandt, A., Trippel, M., Mader, I., et al. (2013). Neural activity in human hippocampal formation reveals the spatial context of retrieved memories. Science, 342(6162), 1111-1114.
    (pdf, supplemental, Ephys data)

  • Morton, N. W., Kahana, M. J., Rosenberg, E. A., Sperling, M. R., Sharan, A. D., and Polyn, S. M. (2013). Category-specific neural oscillations predict recall organization during memory search. Cerebral Cortex, 23(10), 2407–2402.
    (pdf, Ephys data)

  • van Vugt, M. K., Sekuler, R., Wilson, H. R., and Kahana, M. J. (2013). An electrophysiological signature of summed similarity in visual working memory. Journal of Experimental Psychology: General, 142(2), 412–425.
    (pdf, Ephys data)

2012

  • van der Meij, R., Kahana, M. J., and Maris, E. (2012). Phase-amplitude coupling in human ECoG is spatially distributed and phase diverse. Journal of Neuroscience, 32(1), 111-123.
    (pdf, Ephys data)

2011

  • Maris, E., van Vugt, M. K., and Kahana, M. J. (2011). Spatially distributed patterns of oscillatory coupling between high-frequency amplitudes and low-frequency phases in human ieeg. NeuroImage, 54(2), 836-850.
    (pdf, Ephys data)

2010

  • van Vugt, M. K., Schulze-Bonhage, A., Litt, B., Brandt, A., and Kahana, M. J. (2010). Hippocampal gamma oscillations increase with working memory load. Journal of Neuroscience, 30(7), 2694–2699.
    (pdf, Ephys data)

2009

  • Jacobs, J. and Kahana, M. J. (2009). Neural representations of individual stimuli in humans revealed by gamma-band electrocorticographic activity. Journal of Neuroscience, 29(33), 10203–10214.
    (pdf, Ephys data)

  • van Vugt, M. K., Schulze-Bonhage, A., Sekuler, R., Litt, B., Brandt, A., Baltuch, G., et al. (2009). Intracranial electroencephalography reveals two distinct similarity effects during item recognition. Brain Research, 1299, 33–44.
    (pdf, Ephys data)

  • Weidemann, C. T., Mollison, M. V., and Kahana, M. J. (2009). Electrophysiological correlates of high-level perception during spatial navigation. Psychonomic Bulletin & Review, 16(2), 313–319.
    (pdf, Ephys data)

2007 and Earlier

  • Jacobs, J., Hwang, G., Curran, T., and Kahana, M. J. (2006). EEG oscillations and recognition memory: Theta correlates of memory retrieval and decision making. NeuroImage, 15(2), 978–87.
    (pdf, Ephys data)

  • Rizzuto, D., Madsen, J. R., Bromfield, E. B., Schulze-Bonhage, A., and Kahana, M. J. (2006). Human neocortical oscillations exhibit theta phase differences between encoding and retrieval. NeuroImage, 31(3), 1352–1358.
    (pdf, Ephys data)

  • Ekstrom, A. D., Caplan, J., Ho, E., Shattuck, K., Fried, I., and Kahana, M. (2005). Human hippocampal theta activity during virtual navigation. Hippocampus, 15, 881–889.
    (pdf, Ephys data)

  • Howard, M. W., Rizzuto, D. S., Caplan, J. C., Madsen, J. R., Lisman, J., Aschenbrenner-Scheibe, R., et al. (2003). Gamma oscillations correlate with working memory load in humans. Cerebral Cortex, 13, 1369–1374.
    (pdf, Ephys data)

  • Rizzuto, D., Madsen, J. R., Bromfield, E. B., Schulze-Bonhage, A., Seelig, D., Aschenbrenner-Scheibe, R., et al. (2003). Reset of human neocortical oscillations during a working memory task. Proceedings of the National Academy of Sciences, USA, 100(13), 7931–7936.
    (pdf, Ephys data)

  • Sederberg, P. B., Kahana, M. J., Howard, M. W., Donner, E. J., and Madsen, J. R. (2003). Theta and gamma oscillations during encoding predict subsequent recall. Journal of Neuroscience, 23(34), 10809–10814.
    (pdf, Ephys data)

  • Raghavachari, S., Kahana, M. J., Rizzuto, D. S., Caplan, J. B., Kirschen, M. P., Bourgeois, B., et al. (2001). Gating of human theta oscillations by a working memory task. Journal of Neuroscience, 21(9), 3175-3183.
    (pdf, Ephys data)