Effect of Reference Scheme on Power and Phase of the Local Field Potential.

ABSTRACT: Brain signals are often analyzed in the spectral domain, where the power spectral density (PSD) and phase differences and consistency can reveal important information about the network. However, for proper interpretation, it is important to know whether these measures depend on stimulus/behavioral conditions or the reference scheme used to analyze data. We recorded local field potential (LFP) from an array of microelectrodes chronically implanted in area V1 of monkeys under different stimulus/behavioral conditions and computed PSD slopes, coherence, and phase difference between LFPs as a function of frequency and interelectrode distance while using four reference schemes: single wire, average, bipolar, and current source density. PSD slopes were dependent on reference scheme at low frequen

SUBMITTER: Shirhatti V 

PROVIDER: S-EPMC7117962 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature