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1	Cortical basis of vocalization in behaving freely moving minipigs ; Bases corticales de la vocalisation chez le miniporc en comportement
	Palma, Marie. - : HAL CCSD, 2021
	In: https://tel.archives-ouvertes.fr/tel-03353386 ; Neuroscience. Université Grenoble Alpes [2020-.], 2021. English. ⟨NNT : 2021GRALS013⟩ (2021)
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2	Observation and assessment of acoustic contamination of electrophysiological brain signals during speech production and sound perception
	Roussel, Philémon; Godais, Gaël Le; Bocquelet, Florent; Palma, Marie; Hongjie, Jiang; Zhang, Shaomin; Giraud Mamessier, Anne-Lise; Megevand, Pierre Bastien; Miller, Kai; Gehrig, Johannes; Kell, Christian; Kahane, Philippe; Chabardés, Stéphan; Yvert, Blaise
	In: ISSN: 1741-2560 ; Journal of Neural Engineering, Vol. 17, No 5 (2020) P. 056028 (2020)
	Abstract: A current challenge of neurotechnologies is to develop speech brain-computer interfaces aiming at restoring communication in people unable to speak. To achieve a proof of concept of such system, neural activity of patients implanted for clinical reasons can be recorded while they speak. Using such simultaneously recorded audio and neural data, decoders can be built to predict speech features using features extracted from brain signals. A typical neural feature is the spectral power of field potentials in the high-gamma frequency band, which happens to overlap the frequency range of speech acoustic signals, especially the fundamental frequency of the voice. Here, we analyzed human electrocorticographic and intracortical recordings during speech production and perception as well as a rat microelectrocorticographic recording during sound perception. We observed that several datasets, recorded with different recording setups, contained spectrotemporal features highly correlated with those of the sound produced by or delivered to the participants, especially within the high-gamma band and above, strongly suggesting a contamination of electrophysiological recordings by the sound signal. This study investigated the presence of acoustic contamination and its possible source.
	Keyword: info:eu-repo/classification/ddc/616.8
	URL: https://archive-ouverte.unige.ch/unige:150472
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