What Is Occlusion in Psychology?


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Occlusion psychology – In psychological terms, the phenomenon of occlusion is a part of memory research. To be specific, occlusion is seen when associated items with the same cue act like a target blocking the successful retrieval of that target.

This is mediated via strength-dependent response competition. The tip-of-the-tongue phenomenon can be classified as an excellent example of occlusion.

Do not confuse occlusion in psychology with occlusion related to perception. Occlusion is seen in this case when one object partially covers another. It can also be demonstrated by the concept of relative height as objects that are higher in the field of vision are more distant.

The basic definition of occlusion states that it is the act of fitting together or obstructing. An example of occlusion is observed in dentistry when both the maxillary and mandibular jaws are brought close together.

This makes the upper and lower teeth come in contact. A blood vessel is also said to be occluded when it is blocked. 

Event occlusion is slightly different. When in motion, you will notice how visual objects undergo significant changes in their appearance. They can seem to change size, shape, and position concerning the background.

You might even notice them occasionally disappearing behind other objects and reappearing in a new position. This is termed event occlusion. 

What is retinal disparity in psychology?

The retinal disparity can be described as the slight difference observed in the two separate retinal images. The cause of retinal disparity is the angle from which each eye views an object.

Is occlusion a pictorial cue?

First, let us explain to you what movement or motion cues are. They are depth cues produced by self-motion or the motion of objects in our surroundings. Pictorial cues differ as occlusion is seen when one object partially covers another.

As mentioned earlier, occlusion deals with the concept of relative height. This is particularly relevant as objects that are higher in the field of vision are more distant.

How does relative height affect our perception?

Depth perception greatly depends on relative height. This is primarily because relative height serves as a monocular cue for depth perception. If you draw two objects at the same difference, a size difference can play a huge role by making the larger object appear closer and the smaller object appears farther away.

What causes occlusion?

A blood vessel can be occluded due to several reasons. It can be due to plaque formation that deposits around the arterial walls (atherosclerosis). This can result in the formation of a clot at the site of occlusion. The clot can further cause an embolism by traveling through the bloodstream and blocking the blood flow of another blood vessel. 

Is an occlusion a stroke?

Occlusion is seen when a blood vessel is blocked. If the penetrating branches of the middle and anterior cerebral arteries are blocked, it could result in an ischemic stroke.

This is because these cerebral arteries perform the function of supplying the deep white and gray matter that produces the lacunar type of stroke. Occclusions of this variety account for almost 20% of ischemic strokes.

What is visual Occlusion Psychology?

Visual occlusion is depicted when the researcher hides body parts or movements through video or film editing. This is done to study how people use vision to chalk out the best course of action in response to something.

What is temporal occlusion?

Temporal occlusion is another form of occlusion. It involves editing a film into specific time phases that pictorally represented longer durations of a movement being demonstrated. This advanced technique can be used to distinguish between levels of skill.

What is the purpose of using event occlusion in motor control research investigating the function of vision?

When investigating the function of vision, we have observed the effect of controlled occlusion of vision during natural tasks. Event occlusion links the time course of the presence or absence of visual information to identifiable events. These events are within the task of interest of the research being conducted.

What is interposition in psychology?

Interposition is another visual cue that shows us how an object is closer than the ones behind it. This phenomenon occurs because the closer object obscures a part of the object placed farther away.

For example, you can easily distinguish the distance between your keyboard and desk. This is because the keyboard is placed on top of your desk and it hides a part of the desk.

How does retinal disparity help you?

Retinal disparity helps you understand depth perception via binocular cues. One can say that the distance between the eyes creates two different images which overlap to give us a good sense of depth. Retinal disparity is a process aiding depth perception that takes place in the brain.

Is stereopsis the same as retinal disparity?

In the visual pathway, there will always be a small difference between the images projected on the two retinas. This is commonly termed as retinal disparity. Stereopsis is the perception of depth. Thus, retinal disparity and stereopsis are different as retinal disparity serves as a binocular cue for the perception of depth.

What are the 5 depth cues?

The 5 kinds of psychological depth cues are:

  • Retinal image size
  • Linear perspective
  • Texture gradient
  • Overlapping
  • Aerial perspective
  • Shades and shadows.

What are the 5 pictorial depth cues?

The 5 pictorial depth cues include:

  • Linear perspective, dwindling size perspective, and aerial perspective
  • Texture gradient
  • Occlusion
  • Elevation
  • Highlights and shading

What type of cue is accommodation?

Accommodation is mainly a monocular cue but both eyes are involved in the process of accommodation. However, you must note that the information provided by one eye is the same as the second.

On receiving some stimuli, the lens in our eye adapts to become either more concave or more convex.

What is an example of relative height?

Relative height is a concept that is crystal-clear in the pictures we click on today. You must have clicked pictures where you are pretending to hold the moon in your hand or leaning against the Eiffel Tower.

These pictures are the best examples of relative height. Because of the distance between you and the object you are pretending to hold, the picture turns out that way. 

What is relative clarity in psychology?

Objects that appear sharper and clearer are believed to be closer than more hazy objects. This is the concept of relative clarity. Texture gradient is used to refer to smaller objects that are more thickly clustered.

These seem to appear farther away than objects that are spread out in space. In contrats to this, linear perspective is when parallel lines that converge appear far away.

What does relative height mean?

Relative height is a visual cue that is often used artistically. We see objects as being smaller and higher concerning closer items. You will observe this phenomenon clearly when you look at distant trees, rocks, or animals in a landscape. 

Is Class 1 Occlusion Psychology normal?

Yes, Class, I occlusion indicates a normal relationship between the teeth and the jaws in dentistry. This is the correct form of occlusion. It helps give the person a well-balanced profile in the anteroposterior plane.

What is a normal occlusion?

Normal occlusion in dentistry is observed when the mesiobuccal cusp of the upper first molar comes in contact with the buccal groove of the lower first molar. This is termed as normal Angle class I occlusion.

Can vein occlusion be cured?

Unfortunately, if you are suffering from retinal vein occlusion, there is no cure. Your retinal veins cannot be unblocked but with the help of the right medications, further complications can be avoided and your vision can be protected. 

What is an eye stroke?

An eye stroke is a common term used to describe the medical condition of anterior ischemic optic neuropathy. When the anterior part of your optic nerve is blocked for some reason, this dangerous condition can arise. An eye stroke can be debilitating and hamper your vision.