Talk by Prof. Nathan Weisz

Event Date: 
Fri, 26/06/2015 - 12:00

CBC Seminars


Nathan Weisz, from CIMeC MEG Group, University of Trento (Italy), invited by Salvador Soto-Faraco (MRG Group)


Title: Combining MEG and tACS: a new avenue to investigate brain functions?



Brain oscillations are supposedly crucial for normal cognitive functioning and alterations are associated with cognitive dysfunctions. To demonstrate their causal role on behavior, entrainment approaches in particular aim at driving endogenous oscillations via rhythmic stimulation. Within this context, transcranial electrical stimulation, especially transcranial alternating current stimulation (tACS), has received renewed attention. This is likely due to the possibility of defining oscillatory stimulation properties precisely. Also, measurements comparing pre-tACS with post-tACS electroencephalography (EEG) have shown impressive modulations. However, the period during tACS has remained a blackbox until now, due to the enormous stimulation artifact.  In my presentation I will  first provide critical evidence that by combining MEG with tACS, subtle modulations of oscillatory brain activity (here alpha modulations when contrasting eyes open vs eyes closed) can be reconstructed even at the stimulation frequency. Following this proof-of-principle I will present ongoing experiments in which this powerful approach is used to address more interesting cognitive neuroscientific questions.



Friday, June 16th, at 12:00



Campus de la Comunicacio UPF, C/ Roc Boronat, 132. MAP
Edifici 52 (Ed. Roc Boronat), room 52.S25

Universitat Pompeu Fabra.


How to get there:

Metro: Llacuna or Poblenou <L4>, Glories <L1>, Tram: Ca l’aranyó [T4]