imagery tasks in modalities such as visual and auditory usually evoke brain activity patterns that overlap to a considerable extent with the patterns observed during actual perception
Damasio establishes that visual imagery and perception share overlapping neural substrates, and that lesion evidence — including the inability to imagine color after occipitotemporal damage — confirms that recall partially reinstates activity at original sensory sites.
, Self Comes to Mind: Constructing the Conscious Brain, 2010thesis