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Examen de los patrones de fluidez sanguínea en el TDAH a través de un test de ejecución continua


Marisol Cueli, Trinidad García, Celestino Rodríguez, Paloma González-Castro, Luis Álvarez, y David Álvarez


Abstract: The criteria established by the DSM-IV-TR are one of the most widely accepted procedures to diagnose the TDAH. There are three different subtypes: inattentive, hyperactive-impulsive and combined. Nir-HEG enables the assessment and intervention of the disorder by measuring blood flow blood oxygenation, recorded in areas specifically selected. In this research, the instrument nir-HEG was applied to 100 subjects classified into four groups: ADHD-inattentive, hyperactive, combined subtype and control group. Simultaneously with the evaluation of blood flow, subject is evaluated with a continuous performance test (TOVA) whose duration is approximately 20 minutes. Therefore, the reason of this research is to assess the instrument over a long period of time while performing a continuous performing task (CPT). The results show statistically significant differences between the control group and the other with ADHD and among the subtypes in the variables of executive control and short evaluation with the nir-HEG. As for the long evaluation of blood oxygenation during a performance of an executive task, some differences can be seen among the subtypes with ADHD, although not statistically significant. We conclude that this measure -ratio HEG-is sufficiently stable during the 20 minutes assessed, so that in a few seconds we may be getting a valid measure.


Keywords: blood activity; nir-HEG; cortical activation; executive control; Q-EEG.


 

 

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