title: A study of evoked potentials from ear-EEG.
abstract: A method for brain monitoring based on measuring the electroencephalogram (EEG) from electrodes placed in-the-ear (ear-EEG) was recently proposed. The objective of this study is to further characterize the ear-EEG and perform a rigorous comparison against conventional on-scalp EEG. This is achieved for both auditory and visual evoked responses, over steady-state and transient paradigms, and across a population of subjects. The respective steady-state responses are evaluated in terms of signal-to-noise ratio and statistical significance, while the qualitative analysis of the transient responses is performed by considering grand averaged event-related potential (ERP) waveforms. The outcomes of this study demonstrate conclusively that the ear-EEG signals, in terms of the signal-to-noise ratio, are on par with conventional EEG recorded from electrodes placed over the temporal region.
authors.forename: Preben
authors.initials: P
authors.lastname: Kidmose
authors.forename: David
authors.initials: D
authors.lastname: Looney
authors.forename: Michael
authors.initials: M
authors.lastname: Ungstrup
authors.forename: Mike Lind
authors.initials: ML
authors.lastname: Rank
authors.forename: Danilo P
authors.initials: DP
authors.lastname: Mandic
mesh_terms: D001307:Auditory Perception / Q000502:physiology*; D004423:Ear / Q000502:physiology*; D004566:Electrodes; D004569:Electroencephalography / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005074:Evoked Potentials, Visual / Q000502:physiology*; D006801:Humans; D018670:Monitoring, Ambulatory / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity