title: Time-frequency characterization of local field potential in a decision making task.
abstract: This study seeks to characterize the neuronal mechanisms underlying voluntary decisions to check/verify. In order to describe and potentially decode decisions from brain signals we analyzed intracortical recordings from monkey prefrontal regions obtained during a cognitive task requiring self-initiated as well as cue-instructed decisions. Using local field potentials (LFP) and single units, we analyzed power spectral density, oscillatory modes, power profiles in time, single unit firing rate, and spike-phase relationships in the β band. Our results point toward specific but variable activation patterns of oscillations in β band from separate recordings, with task-dependent frequency preference and amplitude modulation of power. The results suggest relationships between particular LFP oscillations and functions engaged at specific time in the task.
authors.forename: Tatjana
authors.initials: T
authors.lastname: Loncar-Turukalo
authors.forename: Gorana
authors.initials: G
authors.lastname: Mijatovic
authors.forename: Nebojsa
authors.initials: N
authors.lastname: Bozanic
authors.forename: Frederic M
authors.initials: FM
authors.lastname: Stoll
authors.forename: Dragana
authors.initials: D
authors.lastname: Bajic
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Procyk
mesh_terms: D000200:Action Potentials; D000818:Animals; D001921:Brain; D003657:Decision Making; D000882:Haplorhini; D009474:Neurons