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Kevin Johnston

4 papers in the library · 1 citation · publishing 2021-2024

Papers

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Effects of Ketamine on Frontoparietal Interactions in a Rule-Based Antisaccade Task in Macaque Monkeys.

Journal of Neuroscience December 11, 2024 Liya Ma, Nupur Katyare, Kevin Johnston et al. 1 citation

Cognitive control is engaged by working memory processes and high-demand situations like antisaccade, where one must suppress a prepotent response. While it is known to be supported by the frontoparietal control network, how intra- and interareal dynamics contribute to cognitive control processes remains unclear. N-Methyl-d-aspartate glutamate receptors (NMDARs) play a key role in prefrontal...

DOI: 10.1523/JNEUROSCI.1018-23.2024 (opens in new tab) Full text (opens in new tab) Cognitive control Functional connectivity Lateral prefrontal cortex Local field potentials +6

Effects of ketamine on frontoparietal interactions during working memory in macaque monkeys

bioRxiv Preprint Server May 16, 2023 Liya Ma, Nupur Katyare, Kevin Johnston et al. preprint

Schizophrenia is known as a syndrome of dysconnection among brain regions. As a model for this syndrome, low doses of N-methyl-D-aspartate (NMDA) receptor antagonists, such as ketamine, produce schizophrenia-like symptoms and cognitive deficits in healthy humans and animals. One of such deficits is impaired working memory, a process that engages an extended network of both frontal and parietal...

DOI: 10.1101/2023.05.16.540957 (opens in new tab) Full text (opens in new tab) Ketamine Neuroscience: brain function Cognitive neuroscience Neural networks +18

Neuregulin signaling mediates the acute and sustained antidepressant effects of subanesthetic ketamine

Translational Psychiatry February 24, 2021 Steven F. Grieco, X. Qiao, Kevin Johnston et al.

Subanesthetic ketamine evokes rapid antidepressant effects in human patients that persist long past ketamine’s chemical half-life of ~2 h. Ketamine’s sustained antidepressant action may be due to modulation of cortical plasticity. We find that ketamine ameliorates depression-like behavior in the forced swim test in adult mice, and this depends on parvalbumin-expressing (PV) neuron-directed...

Ketamine disrupts gaze patterns during face viewing in the common marmoset

bioRxiv Preprint Server February 16, 2021 Janahan Selvanayagam, Kevin Johnston, Raymond K. Wong et al. preprint

Faces are stimuli of critical importance for primates. The common marmoset (Callithrix jacchus) is a promising model for investigations of face processing, as this species possesses oculomotor and face processing networks resembling those of macaques and humans. Face processing is often disrupted in neuropsychiatric conditions such as schizophrenia (SZ) and thus it is important to recapitulate...

DOI: 10.1101/2021.02.16.431438 (opens in new tab) Full text (opens in new tab) Ketamine: substances Social behavior Face-viewing Visual attention +3