title: A Pressure Injection System for Investigating the Neuropharmacology of Information Processing in Awake Behaving Macaque Monkey Cortex.
abstract: The top-down modulation of feed-forward cortical information processing is functionally important for many cognitive processes, including the modulation of sensory information processing by attention. However, little is known about which neurotransmitter systems are involved in such modulations. A practical way to address this question is to combine single-cell recording with local and temporary neuropharmacological manipulation in a suitable animal model. Here we demonstrate a technique combining acute single-cell recordings with the injection of neuropharmacological agents in the direct vicinity of the recording electrode. The video shows the preparation of the pressure injection/recording system, including preparation of the substance to be injected. We show a rhesus monkey performing a visual attention task and the procedure of single-unit recording with block-wise pharmacological manipulations.
authors.affiliation: Cognitive Neuroscience Laboratory, German Primate Center; VVeith@dpz.eu.
authors.forename: Vera K
authors.initials: VK
authors.lastname: Veith
authors.affiliation: Cognitive Neuroscience Laboratory, German Primate Center.
authors.forename: Cliodhna
authors.initials: C
authors.lastname: Quigley
authors.affiliation: Cognitive Neuroscience Laboratory, German Primate Center; Faculty of Biology and Psychology, Goettingen University.
authors.forename: Stefan
authors.initials: S
authors.lastname: Treue
mesh_terms: D000818:Animals; D001288:Attention / Q000187:drug effects / Q000502:physiology*; D002540:Cerebral Cortex / Q000187:drug effects / Q000502:physiology*; D003071:Cognition / Q000187:drug effects / Q000502:physiology; D008253:Macaca mulatta; D008845:Microinjections / Q000379:methods*; D009480:Neuropharmacology; D011312:Pressure; D012601:Scopolamine / Q000008:administration & dosage*; D014851:Wakefulness / Q000187:drug effects / Q000502:physiology*
chemical_list: D012601:Scopolamine