"During the late 1970s and early 1980s there was vigorous debate about the nature of visual mental imagery. One positi…"

"We must begin by distinguishing between visual mental imagery and visual perception: Visual perception occurs while a…"

"But because of the way in which depictions represent, there is a correspondence between parts and spatial relations o…"

"A mental image occurs when a representation of the type created during the initial phases of perception is present bu…"

"These organizational processes result in our perceptions being structured into units corresponding to objects and pro…"

"Even if it were clear what was meant, this sort of treatment would seem closer to describing what is taking place tha…"

"It is hard to define something one knows little about"

"Physics seems to have done reasonably well in studying electrons, although there is not to this day a precise definit…"

"Mr. Magoo Rule: Text and graphics must be easily distinguished and recognized. Don ́t make your audience members feel…"

"Resist the temptation to use special effects. Think about science fiction movies with lots of special effects: If you…"