Questions: Mental Imagery and Visual Consciousness

Question 1

A philosopher claims that for mental imagery, intentional content and phenomenal character are the same thing — what a mental state is about just is what it is like. What does the study of mental imagery suggest about this claim?

• A. The claim is correct — in imagery, representing a red apple and experiencing redness are necessarily identical
• B. The claim is incorrect — two experiences can share the same intentional content yet differ phenomenally, as when perceiving versus imagining a red apple
• C. The claim is incorrect — imagined objects have phenomenal character but no intentional content, since they represent nothing real
• D. The claim is correct, but only for visual imagery; auditory imagery separates the two dimensions

Answer: (B)

Perceiving a red apple and imagining a red apple share intentional content (both are 'about' a red apple), yet they differ phenomenally — the imagined apple is less vivid. This shows the two dimensions can come apart, which is why mental imagery is a useful test case. Option C is wrong because mental images clearly are 'about' objects (they have intentionality); the puzzle is about phenomenal character, not intentionality.

Question 2

In Shepard's mental rotation experiments, response time increased proportionally with the angle between the rotated shapes. What theoretical view do these findings most support?

• A. Descriptionalism — mental images are composed of discrete, language-like symbolic representations
• B. Eliminativism — the experiments show that 'mental imagery' is a folk-psychological fiction
• C. Pictorialism — mental images preserve spatial structure and are processed in an analog, continuous way
• D. Representationalism in general — mental states have intentional content

Answer: (C)

If mental images were discrete symbolic descriptions (descriptionalism), comparing two representations at different angles should not take longer at larger angles — the comparison would be a logical check, not a spatial operation. The continuous, proportional increase in response time suggests the mind is doing something analogous to physically rotating an object: a spatial, analog process. This is the hallmark prediction of pictorialism.

Question 3

Neuroimaging studies show overlapping activation in the visual cortex during both perception and mental imagery, suggesting they share a common representational format.

• T. True
• F. False

Answer: True

True — early visual cortex (V1 and surrounding areas) activates both when participants see a stimulus and when they vividly imagine the same stimulus. This supports the view that imagery and perception recruit the same representational machinery, not entirely separate systems. It also explains why imagery can interfere with concurrent visual perception (both compete for the same cortical resources).

Question 4

The phenomenal character of mentally imagining a red apple is identical to that of actually seeing a red apple.

• T. True
• F. False

Answer: False

False — while imagery and perception share representational format (common neural substrate, similar content), they are phenomenally distinct. Imagined experiences are generally less vivid, less detailed, and more subject to voluntary control than perceptual ones. The same intentional content (redness, roundness) can be accompanied by different phenomenal character — which is precisely why the perception/imagery distinction is informative for theories of consciousness.

Question 5

Why is mental imagery a useful test case for distinguishing intentional content from phenomenal character, and why does this distinction matter for theories of consciousness?

Model answer: Mental imagery is useful because it isolates the internal, generative component of visual experience from external stimulation. When you imagine a red apple, the representational content (what the state is about) is similar to seeing one, but the phenomenal character differs (less vivid). This shows the two dimensions are not identical. It matters because some theories of consciousness try to explain phenomenal character entirely in terms of representational content (strong representationalism). If they can come apart — same content, different experience — then representational content alone cannot fully explain what it is like to be in a mental state.

The deeper point is that understanding consciousness requires tracking both dimensions separately: not just what a mental state represents, but what it is like to be in it. Mental imagery is a natural laboratory for this because you can have rich phenomenal experience without the usual external causal chain, forcing the theory to explain the phenomenal dimension on its own terms.