Ravikrishnan P. Jayakumar

Postdoctoral Fellow

LIMBS Lab, Mechanical Engineering Department
The Knierim Lab, Zanvyl Krieger Mind/Brain Institute

E-mail: [email protected]

Google Scholar Profile

Education

Ph.D. in Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland, U.S.A.

M.S.E. in Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland, U.S.A.

B.Tech, Mechanical Engineering. National Institute of Technology Calicut, Kerala, India.

Publications

Y. Sueoka, R. P. Jayakumar, M. S. Madhav, F. Savelli, N. J. Cowan, and J. J. Knierim, “Allothetic and idiothetic spatial cues control the multiplexed theta phase coding of place cells,” Nat Neurosci, 2025.
[Bibtex]

@Article{sueokaallothetic2025,
author = {Sueoka, Yotaro and Jayakumar, Ravikrishnan P. and Madhav, Manu S. and Savelli, Francesco and Cowan, Noah J. and Knierim, James J.},
title = {Allothetic and idiothetic spatial cues control the multiplexed theta phase coding of place cells},
journal = {Nat Neurosci},
year = {2025},
doi = {10.1038/s41593-025-02038-6},
url = {https://doi.org/10.1038/s41593-025-02038-6},
note = {Published online}
}

M. S. Madhav, R. P. Jayakumar, B. Y. Li, S. G. Lashkari, K. Wright, F. Savelli, J. J. Knierim, and N. J. Cowan, “Control and recalibration of path integration in place cells using optic flow,” Nat Neurosci, vol. 27, iss. 8, p. 1599–1608, 2024.
[Bibtex]

@article{madhavcontrol2024,
author = {Madhav, Manu S. and Jayakumar, Ravikrishnan P. and Li, Brian Y. and Lashkari, Shahin G. and Wright, Kelly and Savelli, Francesco and Knierim, James J. and Cowan, Noah J.},
title = {Control and recalibration of path integration in place cells using optic flow},
doi = {10.1038/s41593-024-01681-9},
url = {https://doi.org/10.1038/s41593-024-01681-9},
journal = {Nat Neurosci},
number = {8},
pages = {1599--1608},
volume = {27},
year = {2024},
annotation = {Madhav and Jayakumar contributed equally; Knierim and Cowan co-supervised equally}
}

T. Raab, M. S. Madhav, R. P. Jayakumar, J. Henninger, N. J. Cowan, and J. Benda, “Advances in non-invasive tracking of wave-type electric fish in natural and laboratory settings,” Front Integr Neurosci, vol. 16, p. 965211, 2022.
[Bibtex]

@article{raabadvances2022,
author = {Raab, Till and Madhav, Manu S. and Jayakumar, Ravikrishnan P. and Henninger, J\"org and Cowan, Noah J. and Benda, Jan},
title = {Advances in non-invasive tracking of wave-type electric fish in natural and laboratory settings},
journal = {Front Integr Neurosci},
volume = {16},
pages = {965211},
doi = {10.3389/fnint.2022.965211},
url = {https://doi.org/10.3389/fnint.2022.965211},
year = 2022
}

B. P. Vagvolgyi, R. P. Jayakumar, M. S. Madhav, J. J. Knierim, and N. J. Cowan, “Wide-angle, monocular head tracking using passive markers,” J Neurosci Methods, vol. 368, p. 109453, 2022.
[Bibtex]

@article{vagvolgyiwide-angle2022,
author = {Vagvolgyi, Balazs P. and Jayakumar, Ravikrishnan P. and Madhav, Manu S. and Knierim, James J. and Cowan, Noah J.},
title = {Wide-angle, monocular head tracking using passive markers},
journal = {J Neurosci Methods},
volume = {368},
pages = {109453},
doi = {10.1016/j.jneumeth.2021.109453},
url = {https://doi.org/10.1016/j.jneumeth.2021.109453},
year = 2022
}

M. S. Madhav, R. P. Jayakumar, S. G. Lashkari, F. Savelli, H. T. Blair, J. J. Knierim, and N. J. Cowan, “The Dome: a virtual reality apparatus for freely locomoting rodents,” J Neurosci Methods, vol. 368, p. 109336, 2022.
[Bibtex]

@article{madhavdome2022,
author = {Madhav, Manu S. and Jayakumar, Ravikrishnan P. and Lashkari, Shahin G. and Savelli, Francescco and Blair, Hugh T. and Knierim, James J. and Cowan, Noah J.},
title = {The Dome: a virtual reality apparatus for freely locomoting rodents},
journal = {J Neurosci Methods},
volume = {368},
pages = {109336},
doi = {10.1016/j.jneumeth.2021.109336},
url = {https://doi.org/10.1016/j.jneumeth.2021.109336},
year = 2022
}

E. S. Fortune, N. Andanar, M. S. Madhav, R. P. Jayakumar, N. J. Cowan, M. E. Bichuette, and D. Soares, “Spooky interaction at a distance in cave and surface dwelling electric fishes,” Front Integr Neurosci, vol. 14, 2020.
[Bibtex]

@article{fortunespooky2020,
author = {Fortune, Eric S. and Andanar, Nicole and Madhav, Manu S. and Jayakumar, Ravikrishnan P. and Cowan, Noah J. and Bichuette, Maria E. and Soares, Daphne},
title = {Spooky interaction at a distance in cave and surface dwelling electric fishes},
journal = {Front Integr Neurosci},
volume = 14,
doi = {10.3389/fnint.2020.561524},
url = {https://doi.org/10.3389/fnint.2020.561524},
year = 2020
}

R. P. Jayakumar, M. S. Madhav, F. Savelli, H. T. Blair, N. J. Cowan, and J. J. Knierim, “Recalibration of path integration in hippocampal place cells,” Nature, vol. 566, iss. 745, p. 533–-537, 2019.
[Bibtex]

@article{jayakumarrecalibration2019,
title = {Recalibration of path integration in hippocampal
place cells},
author = {Jayakumar, Ravikrishnan P. and Madhav, Manu S. and Savelli, Francesco and Blair, Hugh T. and Cowan, Noah J. and Knierim, James J.},
journal = {Nature},
volume = 566,
number = 745,
pages = {533–-537},
pmid = 30742074,
year = 2019,
doi = {10.1038/s41586-019-0939-3},
url = {https://doi.org/10.1038/s41586-019-0939-3},
annotation = {Jayakumar and Madhav contributed equally; Cowan and Knierim co-supervised equally}
}

M. S. Madhav, R. P. Jayakumar, A. Demir, S. A. Stamper, E. S. Fortune, and N. J. Cowan, “High-resolution behavioral mapping of electric fishes in Amazonian habitats,” Sci Rep, vol. 8, iss. 1, p. 5830, 2018.
[Bibtex]

@article{madhavhigh-resolution2018,
author = {Madhav, Manu S. and Jayakumar, Ravikrishnan P. and Demir, Alican and Stamper, Sarah A. and Fortune, Eric S. and Cowan, Noah J.},
title = {High-resolution behavioral mapping of electric
fishes in Amazonian habitats},
journal = {Sci Rep},
number = 1,
volume = 8,
year = 2018,
pages = {5830},
doi = {10.1038/s41598-018-24035-5},
url = {https://doi.org/10.1038/s41598-018-24035-5}
}

R. P. Jayakumar, “State estimation in complex biological systems,” PhD Thesis, 2019.
[Bibtex]

@PHDTHESIS{jayakumarstate2019,
author = {Jayakumar, Ravikrishnan P.},
title = {State estimation in complex biological systems},
school = {Johns Hopkins University},
year = 2019
}