Joel Hahn

Associate Professor (Research) of Biological Sciences
Pronouns He / Him / His Email joelhahn@usc.edu Office HNB 416B Office Phone (213) 821-1837

Research & Practice Areas

Systems and Cellular Neuroscience; Neuroanatomy; Neural Connectomics; Neuroethology.

Center, Institute & Lab Affiliations

  • 1. USC, Neurobiology Section.,
  • 2. UCLA (group of Dr. Hongwei Dong).,
  • 3. USC, Human & Evolutionary Biology Section (group of Dr. Scott Kanoski).,
  • 4. Institute of Biomedical Sciences, University of Sao Paulo (group of Dr. Newton Canteras).,
  • Summary Statement of Research Interests

    My field of research is systems neuroscience (the structure and function of neuronal circuits). Within this broad field, my main research interests are: 1) neuronal network architecture, and 2) the structure and function of specific neuronal circuits (especially hypothalamic) involved in the control of physiological and behavioral processes that support survival and reproduction. (Selected publications below).

    Research Keywords

    Systems Neuroscience; Informatics; Neural Networks; Cognitive and Motor Systems; Neuroendocrine System; Motivation and Emotion; Hypothalamus.

  • Journal Article

    • Swanson, L. W., Hahn, J. D., Sporns, O. (2020). Structure–function subsystem models of female and male forebrain networks integrating cognition, affect, behavior, and bodily functions. Proc Natl Acad Sci U S A. PubMed Web Address
    • Hahn, J. D., Swanson, L. W., Bowman, I., Foster, N. N., Zingg, B. B., Bienkowski, M. S., Hintiryan, H., Dong, H. W. (2020). An open access mouse brain flatmap and upgraded rat and human brain flatmaps based on current reference atlases. Journal of Comparative Neurology. PubMed Web Address
    • Swanson, L. W., Hahn, J. D. (2020). A qualitative solution with quantitative potential for the mouse hippocampal cortex flatmap problem. Proc Natl Acad Sci U S A. Vol. 117 (6), pp. 3220-3231. PubMed Web Address
    • Hahn, J. D., Fink, G., Kruk, M. R., Stanley, B. G. (2019). Editorial: Current views of hypothalamic contributions to the control of motivated behaviors. Frontiers in Systems Neuroscience. PubMed Web Address
    • Swanson, L. W., Sporns, O., Hahn, J. D. (2019). The network organization of rat intrathalamic macroconnections and a comparison with other forebrain divisions. Proc Natl Acad Sci U S A. Vol. 116 (27), pp. 13661-13669. PubMed Web Address
    • Hahn, J. D., Sporns, O., Watts, A. G., Swanson, L. W. (2019). Macroscale intrinsic network architecture of the hypothalamus. Proc Natl Acad Sci USA. Vol. 116 (16), pp. 8018-8027. PubMed Web Address
    • Swanson, L. W., Hahn, J. D., Jeub, L. G., Fortunato, S., Sporns, O. (2018). Subsystem organization of axonal connections within and between the right and left cerebral cortex and cerebral nuclei (endbrain). Proc Natl Acad Sci USA. Vol. 115 (29), pp. E6910-E6919. PubMed Web Address
    • Noble, E. E., Hahn, J. D., Konanur, V. V., Hsu, T. M., Page, S. J., Cortella, A. M., Liu, C. M., Song, M. Y., Suarez, A. N., Szujewski, C. C., Rider, D., Clarke, J. E., Darvis, M., Appleyard, S. M., Kanoski, S. E. (2018). Control of feeding behavior by cerebral ventricular volume transmission of melanin-concentrating hormone. Cell Metab. Vol. 28 (1), pp. 1-14. PubMed Web Address
    • Swanson, L. W., Hahn, J. D., Sporns, O. (2017). Organizing principles for the cerebral cortex network of commissural and association connections. Proc Natl Acad Sci USA. Vol. 114 (45), pp. E9692-E9701. PubMed Web Address
    • Rangel, M. M., Baldo, M. V., Canteras, N. S., Hahn, J. D. (2016). Evidence of a role for the lateral hypothalamic area juxtadorsomedial region (LHAjd) in defensive behaviors associated with social defeat. Frontiers in Systems Neuroscience. PubMed Web Address
    • Swanson, L. W., Sporns, O., Hahn, J. D. (2016). Network architecture of the cerebral nuclei (basal ganglia) association and commissural connectome. Proc Natl Acad Sci USA. Vol. 113 (40), pp. E5972-E5981. PubMed Web Address
    • Hahn, J. D., Swanson, L. W. (2015). Connections of the juxtaventromedial region of the lateral hypothalamic area in the male rat. Frontiers in Systems Neuroscience. PubMed Web Address
    • Hsu, T. M., Hahn, J. D., Konanur, V. R., Lam, A., Kanoski, S. E. (2014). Hippocampal GLP-1 receptors influence food intake, meal size, and effort-based responding for food through volume transmission. Neuropsychopharmacology. Vol. 40 (2), pp. 327-337. PubMed Web Address
    • Hahn, J. D., Swanson, L. W. (2012). Connections of the Lateral Hypothalamic Area Juxtadorsomedial Region in the Male Rat. Journal of Comparative Neurology. Vol. 520 (9), pp. 1831-1890. PubMed Web Address
    • Hahn, J. D., Swanson, L. W. (2010). Distinct patterns of neuronal inputs and outputs of the juxtaparaventricular and suprafornical regions of the lateral hypothalamic area in the male rat. Brain Research Reviews. Vol. 64 (1), pp. 14-103. PubMed Web Address
    • Hahn, J. D. (2010). Comparison of melanin-concentrating hormone and hypocretin/orexin peptide expression patterns in a current parceling scheme of the lateral hypothalamic zone. Neuroscience Letters. Vol. 468 (1), pp. 12-17. PubMed Web Address
  • Administrative Appointments

    • Member, Dornsife Faculty Council, 2017-2018
    • Member, Research, Policies, and Documentation Caucus, 2017-2018