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Lecture 2: Perceptual process

In this step, we will discuss the important ‘principle’ of perceptual processing and two mechanisms to explain how perception is shaped.

Perception is subjective

What does it mean?

In this step, we will learn that perception is subjective. It is not a ‘copy’ of the objective form of things in the world. Traditionally, psychologists have two mechanisms to explain how perception is shaped, including ‘bottom-up processing’ and ‘top-down processing’.

Both bottom-up processing and top-down processing are critical to the shaping of perception.

  • Bottom-up processing is more relevant to how sensory information is transformed and how the basic components of an object are detected.
  • Top-down processing is more relevant to how the human mind interprets information.

Before you move to the next step, we recommend you to check this video:

Ramachandran – Ramachandran – Ames room illusion explained

Ramachandran, a famous neuroscientist, explains the secret behind the Ames room.

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