title: Effects of cerebellar transcranial direct current stimulation on attentional processing of the stimulus: Evidence from an event-related potentials study.
abstract: Attentional processing consists of a set of processes that manage the flow of information through the nervous system and appropriately allocate attentional resources to relevant stimuli. Specific networks in the frontal and parietal regions appear to be involved in attention. The cerebellum has been identified as a subcortical structure that interacts with cortical brain areas, thereby controlling attentional processes. The aim of this study was to investigate the role of the cerebellum in attentional processing of the stimulus using a P300 Novelty task. We studied the effects of transcranial Direct Current Stimulation (tDCS) delivered over the left cerebellar hemisphere in cathodal, anodal and sham sessions on the P300 components in healthy subjects. Only cathodal cerebellar tDCS significantly reduced the amplitude of the N1, N2 and P3 components for both the target and novel stimuli. Moreover, N1 latency for all the stimuli was shorter after the cathodal tDCS session than after the sham or anodal sessions. These results point to a role of the cerebellum in attentional processing of the stimulus. The cerebellum may act indirectly by regulating and managing the activation and inhibition levels of the cortical areas involved in attentional networks.
authors.affiliation: Department of Neurology and Psychiatry, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy. Electronic address: daniela.mannarelli@uniroma1.it.
authors.forename: Daniela
authors.initials: D
authors.lastname: Mannarelli
authors.affiliation: Department of Neurology and Psychiatry, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy. Electronic address: caterina.pauletti@uniroma1.it.
authors.forename: Caterina
authors.initials: C
authors.lastname: Pauletti
authors.affiliation: Department of Neurology and Psychiatry, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy. Electronic address: marica.delucia@gmail.com.
authors.forename: Maria C
authors.initials: MC
authors.lastname: De Lucia
authors.affiliation: Department of Neurology and Psychiatry, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy. Electronic address: r.dellechiaie@centrokahlbaum.it.
authors.forename: Roberto
authors.initials: R
authors.lastname: Delle Chiaie
authors.affiliation: Department of Neurology and Psychiatry, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy. Electronic address: bersani.fs@gmail.com.
authors.forename: Francesco Saverio
authors.initials: FS
authors.lastname: Bersani
authors.affiliation: Department of Neurology and Psychiatry, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy. Electronic address: francesco.spagnoli84@gmail.com.
authors.forename: Francesco
authors.initials: F
authors.lastname: Spagnoli
authors.affiliation: Department of Neurology and Psychiatry, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy. Electronic address: amedeomin@gmail.com.
authors.forename: Amedeo
authors.initials: A
authors.lastname: Minichino
authors.affiliation: Department of Medical-Surgical Sciences and Biotechnologies, A. Fiorini Hospital, Terracina, LT, Sapienza University of Rome, Polo Pontino, Latina, Italy. Electronic address: antonio.curra@uniroma1.it.
authors.forename: Antonio
authors.initials: A
authors.lastname: Currà
authors.affiliation: Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genova, Italy. Electronic address: ctrompetto@neurologia.unige.it.
authors.forename: Carlo
authors.initials: C
authors.lastname: Trompetto
authors.affiliation: Department of Neurology and Psychiatry, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy. Electronic address: francesco.fattapposta@uniroma1.it.
authors.forename: Francesco
authors.initials: F
authors.lastname: Fattapposta
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D000328:Adult; D001288:Attention / Q000502:physiology*; D001307:Auditory Perception / Q000502:physiology*; D002531:Cerebellum / Q000502:physiology*; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology*; D005221:Fatigue / Q000209:etiology / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D010146:Pain / Q000209:etiology / Q000503:physiopathology; D057566:Self Report; D065908:Transcranial Direct Current Stimulation / Q000009:adverse effects / Q000379:methods*
keywords: Attention; Cerebellum; P300; tDCS