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  1. No Access

    Article

    A time-dependent role for the transcription factor CREB in neuronal allocation to an engram underlying a fear memory revealed using a novel in vivo optogenetic tool to modulate CREB function

    The internal representation of an experience is thought to be encoded by long-lasting physical changes to the brain (“engrams”) . Previously, we and others showed within the lateral amygdala (LA), a region cri...

    Albert Park, Alexander D. Jacob, Brandon J. Walters, Sungmo Park in Neuropsychopharmacology (2020)

  2. No Access

    Article

    Characterization of Free-Standing Nano-Membranes by Using Ellipsometry

    The thickness of the pellicle is only a few tens of microns in extreme ultraviolet lithography (EUVL). This is because the absorption loss by the pellicle is high. Thus, the thickness and contamination on the ...

    Sungmo Park, Changho Lee, Ilsin An, Min-Su Kim in Journal of the Korean Physical Society (2018)

  3. Article

    Neuronal Allocation to a Hippocampal Engram

    The dentate gyrus (DG) is important for encoding contextual memories, but little is known about how a population of DG neurons comes to encode and support a particular memory. One possibility is that recruitme...

    Sungmo Park, Emily E Kramer, Valentina Mercaldo, Asim J Rashid in Neuropsychopharmacology (2016)

  4. Article

    Open Access

    Sound tuning of amygdala plasticity in auditory fear conditioning

    Various auditory tones have been used as conditioned stimuli (CS) for fear conditioning, but researchers have largely neglected the effect that different types of auditory tones may have on fear memory process...

    Sungmo Park, Junuk Lee, Kyungjoon Park, Jeongyeon Kim, Beomjong Song in Scientific Reports (2016)

  5. Article

    mGluR2/3 in the Lateral Amygdala is Required for Fear Extinction: Cortical Input Synapses onto the Lateral Amygdala as a Target Site of the mGluR2/3 Action

    Various subtypes of metabotropic glutamate receptors (mGluRs) have been implicated in fear extinction, but mGluR2/3 subtype has not been tested. Here, we found that microinjection of an mGluR2/3 antagonist, LY...

    Jihye Kim, Bobae An, Jeongyeon Kim, Sewon Park, Sungmo Park in Neuropsychopharmacology (2015)

  6. No Access

    Article

    GluA1 phosphorylation at serine 831 in the lateral amygdala is required for fear renewal

    The authors show that extinction of fear conditioning lowers the threshold for synaptic potentiation in the lateral amygdala (LA), and fear renewal-inducing stimuli induce phosphorylation of AMPAR subunit GluA...

    Sukwon Lee, Beomjong Song, Jeongyeon Kim, Kyungjoon Park, Ingie Hong in Nature Neuroscience (2013)

  7. No Access

    Chapter and Conference Paper

    Two efficient algorithms for arithmetic of elliptic curves using Frobenius map

    In this paper, we present two efficient algorithms computing scalar multiplications of a point in an elliptic curve defined over a small finite field, the Frobenius map of which has small trace. Both methods u...

    Jung Hee Cheon, Sungmo Park, Sangwoo Park, Daeho Kim in Public Key Cryptography (1998)

  8. No Access

    Chapter and Conference Paper

    Conditional correlation attack on nonlinear filter generators

    In this paper, the optimum correlation attack recently introduced by R. Anderson is improved to be applicable to most of the nonlinear filter generators. We propose a conditional correlation attack by introduc...

    Sang** Lee, Seongtaek Chee, Sangjoon Park in Advances in Cryptology — ASIACRYPT '96 (1996)