FISH Psychology 🐟 咸鱼心理学 🐟

Have you ever seen the illusions in pictures 1 and 2🤔?  Picture 1 Picture 2 Picture 3 Both lines A and B (picture 3) in both illusions have the same length , but we perceive them as one longer than the other. Why is that so🧐? It is due to the failure of size constancy . - What is size constancy? Size constancy is the tendency of our visual system to perceive the object as the same size regardless of the change of the perceived distance and size on the retina. Size constancy failure explanation Ponzo Illusion In the 🔹Ponzo illusion🔹, the diagonal lines would be seen as ascending to the horizon, hence line A would be perceived as being further away from line B. If both line A and line B are the same sizes, then line A should be perceived as being shorter. However, as the length of line A exceeds the given range of the two diagonal lines, it would then be perceived as being longer compared to line B. As a result, given these two factors, line A would be perceived to be longer t...

Illusory Contours Have you ever experienced a situation where you can identify an object or shape without needing the contour (or outline) of it? In visual illusion👁️‍🗨️, this is known as illusory contours, where you can perceive the outlines of an unexisting shape😲! - What is Illusory Contour? Illusory contours refer to visual illusions of perceiving and recognizing contours in an object that is not physically present (none exist). Examples of Illusory Contours 1️⃣Kanizsa Triangle (Kanzsa, 1955) The Kanizsa Triangle was first created by Italian psychologist Gaetano Kanizsa in 1955. As shown in the image above, a white upside-down triangle can be perceived as occluding the upright triangle and the three circles even though there are no explicit outlines whatsoever. Besides that, the white upside-down triangle also appears brighter than the surrounding white background. In fact, the white upside-down triangle actually does not exist at all and it has the same brightness as the backg...

What is Ambiguous Figure? Ambiguous figure is also known as Bistable or Reversible Figure. It is a visual stimulus (an image) that can have multiple interpretations , but we could see only one interpretation at a time. Ambiguous figures have demonstrated the concept of multistable perception in which an image is able to provide multiple, yet stable, perceptions. When perceiving ambiguous figures, our perception of the image would reverse spontaneously even though the visual information stays unchanged, and hence perceiving another object in the unchanging image. -- The rabbit/duck illusion 🐰🦆, young/old lady 👧🏻👵🏼, and Rubin’s vase are the famous examples of ambiguous figures. Rabbit duck Illusion Young old lady Illusion Rubin's vase -- Jastrow’s rabbit/duck & young/old lady In Jastrow’s rabbit/duck and the young/old lady illusion, we can see rabbit and duck; young and old lady in the same image respectively. The mechanism of change in perception is similar, where when y...

What colour do you perceive this dress as? Blue-black or White-gold ? Why do we perceive different colours from this image? This is due to the failure of colour constancy ! -- What is colour constancy? Colour constancy suggests that regardless of the lighting in the environment, we can always identify the colour of the object. Normally when we look at an object (eg. a red apple), we rely on surrounding cues such as reflection, lighting, and etc to recognize the object including its colours. While perceiving the colours of an object, the tone of the lighting (either warm or cool tone) would affect the colour perception. The dress illusion happened due to the failure of colour constancy which is caused by the unusual similarity of the lighting towards both warm and cool tone. In other words, when we should be seeing the same dress colour regardless the tone of the lighting, we actually perceive different colours of the same dress. -- Dress illusion Explanations Q: Why do some people see...