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Memory trace interference impairs recall in a mouse model of Alzheimer’s disease

Abstract In Alzheimer’s disease (AD), hippocampus-dependent memories underlie an extensive decline. The neuronal ensemble encoding a memory, termed engram, is partially recapitulated during memory recall. Artificial activation of an engram can restore memory in a mouse model of early AD, but its fate and the factors that render the engram nonfunctional...

Mon Aug 23, 2021 00:54
The far ultraviolet aurora of Ganymede

Abstract The far ultraviolet (FUV) aurora on Jupiter’s largest moon, Ganymede, is characterized by two distinct ovals in the northern and southern hemisphere, which have been investigated by several campaigns of the Hubble Space Telescope (HST) in the past two decades (e.g., Hall et al. (1998), Feldman et al. (2000) and McGrath et al. (2013)). The...

Mon Aug 23, 2021 00:54
Morphology of Ganymede’s FUV auroral ovals

Abstract We study the morphology of Ganymede’s FUV aurora by analyzing spectral images obtained over the past two decades by the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope. The observations cover the eastern and western elongation as well as various magnetic latitudes of Ganymede within the Jovian plasma sheet. We find...

Mon Aug 23, 2021 00:54
The search for a subsurface ocean in Ganymede with Hubble Space Telescope observations of its auroral ovals

Abstract We present a new approach to search for a subsurface ocean within Ganymede through observations and modeling of the dynamics of its auroral ovals. The locations of the auroral ovals oscillate due to Jupiter’s time-varying magnetospheric field seen in the rest frame of Ganymede. If an electrically conductive ocean is present, the external time-varying...

Mon Aug 23, 2021 00:54

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