7/26/2023 0 Comments List of auditory illusions![]() Gustatory Hallucination: Represented by the tongue, it is identified by the taste that is not related to the food, that is being consumed.Olfactory Hallucination: A form of hallucination in which the patient smells an odor that is not present. ![]() Visual Hallucination: It takes place when a person says that he/she can see someone or talks to someone, who is not present there.Auditory Hallucination: It happens when a person hears some voices or sounds, telling him/her to do something.There are five different types of hallucination, these are: It must be under the wilful control of the person.It must occur in outer and objective space.It must be as clear (vivid) as a real perception.Perception must take place without a stimulus (object).To be labeled as a hallucination, it must fulfill the following criterion: It is an alleged perception of something, which is not really there. It is an experience that appears to take place without any outside source. In this way, hallucination differs from imagination. It must be noted that hallucinations are usually experienced in the real outside world, and not within the mind of the person concerned. When a person experiences false sensory perception, in the absence of any actual external stimulus or say object, it is called hallucination. There are a number of causes of illusion, these are:Īlso Read: Difference Between Sensation and Perception Definition of Hallucination Illusion of Movement: When we perceive an object as moving when we are looking at it, which is not at all moving, such an illusion is called an illusion of movement.In the perception of the line that is vertical in shape, the upright movement of eyes produces more muscular strain than the horizontal movement, in the perception of the line that is horizontal in shape. This is a result of our field of vision that is generally that of a horizontal ellipse. Horizontal or Vertical Illusion: Even when horizontal and vertical lines are equal in their length, the one which is vertical is perceived as longer.straight and parallel to each other, because of the movement of our eye and the likelihood of overestimating acute angle. Further, it may be difficult to perceive them as they are, i.e. Illusion of Curvature: In this illusion, even when two horizontal lines are straight and parallel to each out they look bowed.And the reason behind the bigger appearance of one shape is that it appears to be distant. It takes place when we rush to add a third dimension to the stimulus, i.e. In this case, even when two pieces or objects are identical in shape and size, one looks bigger than the other, which is a result of the misleading perspective cue. ![]()
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