Internal dedicated microprocessor

A representative instrument [Kondraske et al., 1984 Kondraske, 1990] is illustrated in Figure 78.4. This device incorporates 8 LEDs and 15 high-speed touch sensors ( home, A1-A8 and B1-B6) and a dedicated internal microprocessor to measure an array of different performance capacities associated with information-processing. Measures at the most basic hierarchical level (visual information-processing speed, visual-spatial memory capacity, visual attention span, etc.) and intermediate level (coordination tasks involving different sets of more basic functional units) are included. 

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