Integration of number modifier. The top two rows of the matrix indicate the rule: “the object in the right column is the result of combining number indicated in the column and the object indicated in the row” (solution: the three squares in the fifth cell).  Since integration of modifiers involves modification of neurons encoding a single object, this type of questions was assigned the NOB score of one. Integration of size and color modifier questions were assigned a PCT score of one since modification is limited to the ventral visual cortex (Gabay et al. 2016). Integration of number modifier questions were assigned a score of two since the numerical information is represented by regions of the posterior parietal lobes (Dehaene et al. 2004, Nieder and Dehaene 2009).  
  Part of: Vyshedskiy A, Dunn R, Piryatinsky I (2017) Neurobiological mechanisms for nonverbal IQ tests: implications for instruction of nonverbal children with autism. Research Ideas and Outcomes 3: e13239. https://doi.org/10.3897/rio.3.e13239