Analysis of brain activation during visual tasks

In the area of brain activity monitoring, the technique of transcranial Doppler (TCD) is widely used in neuroscience laboratories because it is non-invasive and can be used in a wide variety of environments, which makes it appropriate to conduct practical tests. The objective of this work is to propose a new methodology to analyze changes in blood flow velocity (BFV) in main cerebral vessels measured by TCD during some visual tasks initiated via a multimedia screen. To conduct this experiment, 23 volunteers of different ages (19 to 66 years) and different sexes were selected. The tests involve measuring -using a Doppler device- the brain activity of each person during the execution of the predefined visual tasks. The BFV data are analyzed with a methodology based on the analysis of statistical differences between repose and activation periods.