John J. Tukker

Hippocampal tangential insertions of high-density silicone probes in head-fixed mice enhance spatial sampling

This paper introduces two tangential insertion methods for high-density silicone probes in head-fixed mice to improve spatial sampling of hippocampal activity.

Calbindin-containing CA1 pyramidal cells support cognitive flexibility in spatial task in mice

The paper investigates the role of Calbindin-containing CA1 pyramidal cells in cognitive flexibility during spatial tasks in mice, finding they support adaptation to environmental changes.

Ultraslow serotonin oscillations in the hippocampus delineate substates across NREM and waking

The paper identifies ultraslow serotonin oscillations in the hippocampus that distinguish substates within NREM and waking, linking them to memory consolidation and arousal.

Somatostatin interneurons activated by 5-HT2A receptor suppress slow oscillations in medial entorhinal cortex

The paper investigates how serotonin modulates slow oscillations in the entorhinal cortex and identifies somatostatin interneurons activated by 5-HT2A receptor as key suppressors of these oscillations in anesthetized mice.

Propagation of Hippocampal Ripples to the Neocortex by Way of a Subiculum-Retrosplenial Pathway

The paper identifies a subiculum-retrosplenial pathway that propagates hippocampal ripples to the neocortex, revealing brain state-dependent coupling and specific neuronal mechanisms.