Université de Fribourg

Stimulus reward value interacts with training-induced plasticity in inhibitory control

Pretto, Michael De ; Hartmann, Lea ; Garcia-Burgos, David ; Sallard, Etienne ; Spierer, Lucas

In: Neuroscience, 2019, vol. 421, p. 82–94

Training inhibitory control, the ability to suppress motor or cognitive processes, not only enhances inhibition processes, but also reduces the perceived value and behaviors toward the stimuli associated with the inhibition goals during the practice. While these findings suggest that inhibitory control training interacts with the aversive and reward systems, the underlying spatio-temporal...

Université de Fribourg

Spatiotemporal brain dynamics underlying attentional bias modifications

Sallard, Etienne ; Hartmann, Lea ; Ptak, Radek ; Spierer, Lucas

In: International Journal of Psychophysiology, 2018, vol. 130, p. 29–39

Exaggerated attentional biases toward specific elements of the environment contribute to the maintenance of several psychiatric conditions, such as biases to threatening faces in social anxiety. Although recent literature indicates that attentional bias modification may constitute an effective approach for psychiatric remediation, the underlying neurophysiological mechanisms remain unclear....

Université de Fribourg

Modulation of inhibitory control by prefrontal anodal tDCS: A crossover double-blind sham-controlled fMRI study

Sallard, Etienne ; Mouthon, Michael ; De Pretto, Michael ; Spierer, Lucas

In: PLOS ONE, 2018, vol. 13, no. 3, p. e0194936

Prefrontal anodal transcranial direct current stimulation (tDCS) has been proposed as a potential approach to improve inhibitory control performance. The functional consequences of tDCS during inhibition tasks remain, however, largely unresolved. We addressed this question by analyzing functional magnetic resonance imaging (fMRI) recorded while participants completed a Go/NoGo task after...

Université de Fribourg

State dependency of inhibitory control performance: an electrical neuroimaging study

De Pretto, Michael ; Sallard, Etienne ; Spierer, Lucas

In: European Journal of Neuroscience, 2016, vol. 44, no. 2, p. 1826–1832

Behavioral and brain responses to stimuli not only depend on their physical features but also on the individuals' neurocognitive states before stimuli onsets. While the influence of pre-stimulus fluctuations in brain activity on low-level perceptive processes is well established, the state dependency of high-order executive processes remains unclear. Using a classical inhibitory control...

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

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...