Simultaneous fMRI and tDCS for Enhancing Training of Flight Tasks

Area of Science:

• Neuroscience
• Cognitive Science
• Human Factors Engineering

Background:

• Complex skill acquisition, such as in aviation, presents challenges for traditional training methods.
• Understanding the neural mechanisms underlying learning in multifocus, real-world tasks is crucial for optimizing training.

Purpose of the Study:

• To investigate the effects of transcranial direct-current stimulation (tDCS) combined with feedback training on pilot performance, brain activity, and connectivity.
• To assess the efficacy of high-definition tDCS (HD-tDCS) applied to the right dorsolateral prefrontal cortex (DLPFC) during a flight simulation task.

Main Methods:

• Experienced glider pilots performed a flight simulator task with varying difficulty and a secondary auditory task.
• Participants received either active HD-tDCS (1.5 mA) or sham stimulation to the right DLPFC during training.
• Functional magnetic resonance imaging (fMRI) was used to measure brain activity and connectivity before, during, and after stimulation.

Main Results:

• Active tDCS significantly improved piloting performance during and after training, particularly in novice pilots.
• fMRI data showed tDCS-induced increases in activation in the cerebellum and basal ganglia for difficult conditions.
• tDCS also increased DLPFC activation and connectivity to the cerebellum, while inhibiting activity in auditory and language-related areas.

Conclusions:

• HD-tDCS can enhance learning and performance in complex perceptual-motor tasks like flight simulation.
• Neurostimulation improves brain activity and connectivity in relevant neural networks, aiding focus and reducing distraction.
• Findings support the application of tDCS in pilot training and other complex skill acquisition domains.