Fig 1From: A cross-sectional controlled developmental study of neuropsychological functions in patients with glutaric aciduria type IA general negative exponential model of development. The model [42, 43] describes development of performance (Y) as an exponential function of age (a). b represents the asymptote to which the performance converges, c is the difference between maximum of Y and asymptote. d indicates how quickly performance changes from maximum to asymptoteBack to article page