Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 22, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/ijms22031286
Keywords
anesthesia; sevoflurane; propofol; ketamine; cortical recordings; electrophysiology
Funding
- SYNCH project, European Commission, FET-Proactive [824162]
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General anesthesia is ethically required in animal experiments for procedures likely to cause pain. The type and depth of anesthesia strongly influence electrophysiological measurements by affecting the shape of signals, highlighting the importance of choosing appropriate anesthesia to minimize impacts on neuronal circuits and related signals.
General anesthesia in animal experiments is an ethical must and is required for all the procedures that are likely to cause more than slight or momentary pain. As anesthetics are known to deeply affect experimental findings, including electrophysiological recordings of brain activity, understanding their mechanism of action is of paramount importance. It is widely recognized that the depth and type of anesthesia introduce significant bias in electrophysiological measurements by affecting the shape of both spontaneous and evoked signals, e.g., modifying their latency and relative amplitude. Therefore, for a given experimental protocol, it is relevant to identify the appropriate anesthetic, to minimize the impact on neuronal circuits and related signals under investigation. This review focuses on the effect of different anesthetics on cortical electrical recordings, examining their molecular mechanisms of action, their influence on neuronal microcircuits and, consequently, their impact on cortical measurements.
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