Perception and Feeling the World

By: Dr Carla Kesrouani June 23, 2023 no comments

Perception and Feeling the World

Perception is the process of interpreting and organizing sensory information to make sense of the world. Perception involves attention, memory, learning, and cognition, and it can be influenced by various factors such as motivation, expectations, beliefs, emotions, and culture. Perception is not a passive or objective reflection of reality, but an active and subjective construction of meaning.

Perception involves the process by which we organize and interpret sensory information to construct a meaningful experience of the world. It bridges the gap between the environment and our minds as we attempt to make sense of the constant stream of sensory data.

Let’s examine key psychological aspects of how we perceive the world around us.

What Is Perception?


Perception is the process of interpreting and organizing sensory information from the external world. It involves both bottom-up and top-down processing, which means that it is influenced by both the stimuli we receive and the expectations we have. Perception allows us to make sense of our surroundings and interact with them effectively.

It has three main components:

  • Sensation – The initial stimulation of our sensory receptors by physical energy.
  • Transduction – The conversion of sensory energies into neural signals that the brain can interpret.
  • Perception – The organziation and interpretation of sensations to form a coherent mental representation.

Perception transforms raw sensory data into meaningful experiences of objects and events through cognitive processes like:

Figure-ground segmentation

  • Recognition of patterns and categories
  • Judgments of similarity and difference
  • Expectations, assumptions and mental sets

These top-down influences shape what and how we perceive at any given moment.

Perceptual Illusions

Perceptual Illusions

Perceptual illusions are phenomena that occur when our sensory systems misinterpret the information they receive from the external world. They can affect any of our senses, such as vision, hearing, touch, taste, or smell. Some examples of perceptual illusions are the Müller-Lyer illusion, the Ponzo illusion, the McGurk effect, and the rubber hand illusion. Perceptual illusions can reveal how our brains process sensory information and construct our perception of reality.

Perceptual illusions reveal that our experiences do not correspond perfectly to the physical environment. Things are not always as they seem.

For example:

  • The Müller-Lyer illusion shows two lines of equal length that appear different sizes.
  • The hollow mask illusion makes a face with a concave surface seem convex.
  • Change blindness shows we fail to notice big changes to scenes we view repeatedly.

These illusions demonstrate that perception results from both external stimulation and internal construction. The brain actively interprets sensory data, rather than passively receiving it.

Top-Down Influences

Perception involves both bottom-up processing of sensory information and top-down influences from past experiences, knowledge and goals.

Higher-level factors like:

  • Expectations
  • Motives
  • Emotions
  • Beliefs
  • Needs

Shape how incoming stimuli are interpreted and organized into meaningful experiences.

This reveals the factors as an active, constructive process of interaction between the perceiver and the perceived world.


Perception demonstrates how psychology bridges the gap between mind and world. By studying perceptual illusions, top-down influences and individual differences, we gain insight into the complex interplay between internal representations and external reality that ultimately shapes all human experience. Understanding perception thus grants a window into the very nature of consciousness itself.

This distinction between perception and illusion gives us the ability to base our thoughts and actions on true facts, and to avoid what is false.

This explains and highlights the pioneering role of psychology in building more realistic and more effective thinking and dealing with the surroundings.


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