Final answer:
Greebles and faces are similar in terms of processing as they activate specific brain regions and can be subject to expertise.
Step-by-step explanation:
In terms of processing, greebles and faces are similar in two ways. Firstly, both greebles and faces are processed in specific regions of the brain. For example, the fusiform face area (FFA) is responsible for processing faces, while the lateral occipital complex (LOC) is activated when processing greebles.
Secondly, both greebles and faces are subject to the phenomenon of expertise. This means that with practice and exposure, individuals can become more skilled at recognizing and distinguishing between different greebles or faces. This expertise is developed through the strengthening of neural connections in the relevant brain areas.