Poster B110, Sunday, March 25, 8:00-10:00 am, Exhibit Hall C
Insight is facilitated by high definition tDCS to the right temporal lobe
Carola Salvi1,2, Ryan Conrardy2, Richard McKinley3, Mark Beeman1, Jordan Grafman2,4,5; 1Department of Psychology, Northwestern University, Chicago, Illinois, USA, 2Shirley Ryan Ability Lab, Chicago, Illinois, USA, 3Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA, 4Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA, 5Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
In the last two decades, neuroscientific research has identified a distinctive brain network for insight problem solving. Several studies, employing various research techniques, converge in showing the activation of the right Superior Temporal Gyrus (rSTG) when participants experience a so called Aha! Moment. While this brain area has been demonstrated to be crucial for the creation of distant semantic relations, fMRI and EEG data involving the rSTG in insight problem solving has so far remained only correlational. Here we attempt a causal approach by applying High Definition Transcranial Direct Current Stimulation (tDCS) to the rSTG of participants, while solving Compound Remote Associates problems. A comparative analysis between and within subjects showed a higher percent of problems solved via insight during and after stimulation, compared to pre-stimulation (on the same participant) and compared to the sham control group. This result represents an important step forward in both understanding the involvement of the rSTG in insight problem solving and a causal approach for its enhancement.
Topic Area: THINKING: Problem solving