Refine my results

Document type

Institution

Specific Collection

Language

Domain

Université de Fribourg

Acute alcohol intoxication and expectations reshape the spatiotemporal functional architecture of executive control

Ribordy Lambert, Farfalla ; Wicht, Corentin A. ; Mouthon, Michael ; Spierer, Lucas

In: NeuroImage, 2020, vol. 215, p. 116811

While the deleterious effects of acute ethyl alcohol intoxication on executive control are well-established, the underlying spatiotemporal brain mechanisms remain largely unresolved. In addition, since the effects of alcohol are noticeable to participants, isolating the effects of the substance from those related to expectations represents a major challenge. We addressed these issues using a...

Université de Fribourg

Age-related changes in the bimanual advantage and in brain oscillatory activity during tapping movements suggest a decline in processing sensory reafference

Sallard, Etienne ; Spierer, Lucas ; Ludwig, Catherine ; Deiber, Marie Pierre ; Barral, Jérôme

In: Experimental Brain Research, 2014, vol. 232, no. 2, p. 469–479

Deficits in the processing of sensory reafferences have been suggested as accounting for age-related decline in motor coordination. Whether sensory reafferences are accurately processed can be assessed based on the bimanual advantage in tapping: because of tapping with an additional hand increases kinesthetic reafferences, bimanual tapping is characterized by a reduced inter-tap interval...

Université de Fribourg

Auditory perceptual decision-making based on semantic categorization of environmental sounds

Lucia, Marzia De ; Tzovara, Athina ; Bernasconi, Fosco ; Spierer, Lucas ; Murray, Micah M.

In: NeuroImage, 2012, vol. 60, no. 3, p. 1704–1715

Discriminating complex sounds relies on multiple stages of differential brain activity. The specific roles of these stages and their links to perception were the focus of the present study. We presented 250 ms duration sounds of living and man-made objects while recording 160-channel electroencephalography (EEG). Subjects categorized each sound as that of a living, man-made or unknown item. We...

Université de Fribourg

Balanced bilinguals favor lexical processing in their opaque language and conversion system in their shallow language

Buetler, Karin A. ; Rodríguez, Diego de León ; Laganaro, Marina ; Müri, René ; Nyffeler, Thomas ; Spierer, Lucas ; Annoni, Jean-Marie

In: Brain and Language, 2015, vol. 150, p. 166–176

Referred to as orthographic depth, the degree of consistency of grapheme/phoneme correspondences varies across languages from high in shallow orthographies to low in deep orthographies. The present study investigates the impact of orthographic depth on reading route by analyzing evoked potentials to words in a deep (French) and shallow (German) language presented to highly proficient bilinguals....

Université de Fribourg

Cognitive control of language production in bilinguals involves a partly independent process within the domain-general cognitive control network: Evidence from task-switching and electrical brain activity

Magezi, David A. ; Khateb, Asaid ; Mouthon, Michael ; Spierer, Lucas ; Annoni, Jean-Marie

In: Brain and Language, 2012, vol. 122, no. 1, p. 55–63

In highly proficient, early bilinguals, behavioural studies of the cost of switching language or task suggest qualitative differences between language control and domain-general cognitive control. By contrast, several neuroimaging studies have shown an overlap of the brain areas involved in language control and domain-general cognitive control. The current study measured both behavioural...

Université de Fribourg

Contributions of pitch and bandwidth to sound-induced enhancement of visual cortex excitability in humans

Spierer, Lucas ; Manuel, Aurelie L. ; Bueti, Domenica ; Murray, Micah M.

In: Cortex, 2014, vol. 49, no. 10, p. 2728–2734

Multisensory interactions have been documented within low-level, even primary, cortices and at early post-stimulus latencies. These effects are in turn linked to behavioral and perceptual modulations. In humans, visual cortex excitability, as measured by transcranial magnetic stimulation (TMS) induced phosphenes, can be reliably enhanced by the co-presentation of sounds. This enhancement occurs...

Université de Fribourg

Differential patterns of functional and structural plasticity within and between inferior frontal gyri support training-induced improvements in inhibitory control proficiency

Chavan, Camille F. ; Mouthon, Michael ; Draganski, Bogdan ; Zwaag, Wietske van der ; Spierer, Lucas

In: Human Brain Mapping, 2015, vol. 36, no. 7, p. 2527–2543

Ample evidence indicates that inhibitory control (IC), a key executive component referring to the ability to suppress cognitive or motor processes, relies on a right-lateralized fronto-basal brain network. However, whether and how IC can be improved with training and the underlying neuroplastic mechanisms remains largely unresolved. We used functional and structural magnetic resonance imaging to...

Université de Fribourg

Dorsolateral prefrontal transcranial direct current stimulation modulates language processing but does not facilitate overt second language word production

Radman, Narges ; Britz, Juliane ; Buetler, Karin ; Weekes, Brendan S. ; Spierer, Lucas ; Annoni, Jean-Marie

In: Frontiers in Neuroscience, 2018, vol. 12, p. -

Word retrieval in bilingual speakers partly depends on executive-control systems in the left prefrontal cortex - including dorsolateral prefrontal cortex (DLPFC). We tested the hypothesis that DLPFC modulates word production of words specifically in a second language (L2) by measuring the effects of anodal transcranial direct current stimulation (anodal-tDCS) over the DLPFC on picture naming...

Université de Fribourg

Early attentional processes distinguish selective from global motor inhibitory control: An electrical neuroimaging study

Sallard, Etienne ; Barral, Jérôme ; Chavan, Camille F. ; Spierer, Lucas

In: NeuroImage, 2014, vol. 87, p. 183–189

The rapid stopping of specific parts of movements is frequently required in daily life. Yet, whether selective inhibitory control of movements is mediated by a specific neural pathway or by the combination between a global stopping of all ongoing motor activity followed by the re-initiation of task-relevant movements remains unclear. To address this question, we applied time-wise statistical...

Université de Fribourg

Electrical neuroimaging during auditory motion aftereffects reveals that auditory motion processing is motion sensitive but not direction selective

Magezi, David A. ; Buetler, Karin A. ; Chouiter, Leila ; Annoni, Jean-Marie ; Spierer, Lucas

In: Journal of Neurophysiology, 2013, vol. 109, no. 2, p. 321-331

Following prolonged exposure to adaptor sounds moving in a single direction, participants may perceive stationary-probe sounds as moving in the opposite direction [direction-selective auditory motion aftereffect (aMAE)] and be less sensitive to motion of any probe sounds that are actually moving (motion-sensitive aMAE). The neural mechanisms of aMAEs, and notably whether they are due to...