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Volume 23 Issue 7, July 2022

‘Current of consciousness’, inspired by the Review on p439.

Cover design: Rachael Tremlett.

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Research Highlights

  • Neuronal activity in a key region of the mouse hypothalamus modulates adult hippocampal neurogenesis, promoting the formation of adult-born neurons that support cognition and affective function.

    • Katherine Whalley
    Research Highlight
  • In rodents, absence seizures — a prominent manifestation of generalized epilepsy — drive activity-dependent myelination in the corpus callosum, increase interhemispheric synchrony and drive increases in seizure burden over time.

    • Sian Lewis
    Research Highlight
  • A population of spinal interneurons that express prokineticin receptor 2 is needed in mice for the rewarding, antistress and prosocial effects of pleasant touch.

    • Natasha Bray
    Research Highlight
  • In mice, infusions of young cerebrospinal fluid into the brains of aged animals promote oligodendrogenesis and improve memory.

    • Darran Yates
    Research Highlight
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Reviews

  • During brain development, cortical circuits form in a stepwise manner through self-organization and activity-dependent adjustment. Cossart and Garel describe the stages that characterize this process and highlight the crucial contributions made by cortical neurons that adopt multiple cellular functions as their development progresses.

    • Rosa Cossart
    • Sonia Garel
    Review Article
  • Macroautophagy involves the delivery of various macromolecules and organelles to lysosomes for degradation. In this Review, Christopher Griffey and Ai Yamamoto provide an overview of this intracellular process and consider its modulation under physiological conditions and in brain disorders.

    • Christopher J. Griffey
    • Ai Yamamoto
    Review Article
  • The orbitofrontal cortex (OFC) has long been thought to track value, but new data implicate the OFC in the representation of cognitive maps of associative relationships. Here, Knudsen and Wallis review these hypotheses and examine how they might be reconciled.

    • Eric B. Knudsen
    • Joni D. Wallis
    Review Article
  • Various theories have been developed for the biological and physical basis of consciousness. In this Review, Anil Seth and Tim Bayne discuss four prominent theoretical approaches to consciousness, namely higher-order theories, global workspace theories, re-entry and predictive processing theories and integrated information theory.

    • Anil K. Seth
    • Tim Bayne
    Review Article
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