--- title: "Spatial Neglect | Cognitive Psychology" description: "Spatial neglect is a disorder where damage, often in the right parietal lobe, makes a person ignore one side of space in Cognitive Psychology." canonical: "https://fiveable.me/cognitive-psychology/key-terms/spatial-neglect" type: "key-term" subject: "Cognitive Psychology" unit: "Unit 15" --- # Spatial Neglect | Cognitive Psychology ## Definition Spatial neglect is a cognitive disorder where someone fails to notice one side of space, usually after right hemisphere damage. In Cognitive Psychology, it shows how attention and brain structure shape perception. ## What It Is Spatial neglect is a condition in Cognitive Psychology where a person does not attend to one side of space, even though their senses on that side may still work. The classic pattern is neglect of the left side after damage to the right hemisphere, especially the right parietal lobe. That makes it a strong example of how attention is not just about seeing something, but about selecting what gets processed. People with spatial neglect are not simply blind on one side. They may eat food only from the right side of a plate, shave only one side of the face, or bump into objects on the neglected side. If you ask them to draw a clock, they may cram all the numbers into the right half. The behavior looks strange from the outside, but it follows from a real breakdown in spatial awareness and attentional orienting. A useful way to think about it is that the brain normally builds a map of space and keeps scanning both sides. When the right hemisphere is damaged, that map can become unbalanced. The result is not a general loss of intelligence or memory, but a very specific failure to register stimuli on one side. That is why spatial neglect is often used in cognitive psychology classes to show that perception depends on attention, not just raw input from the eyes. This term is often confused with simple sensory loss, but the difference matters. A person with spatial neglect may have intact vision if you test each eye directly, yet still ignore one side in real-world tasks. That makes the condition useful for understanding how the brain links visual attention, perception, and action. It also shows why damage in one brain region can change a whole pattern of daily behavior. Clinically and in lab settings, spatial neglect is often measured with tasks like line bisection or cancellation tests. These tasks reveal whether someone systematically misses stimuli on one side or misjudges center. In a classroom, that same pattern helps you connect brain anatomy to visible behavior in a way that is easy to recognize and explain. ## Why It Matters Spatial neglect matters in Cognitive Psychology because it gives you a clear case study of how attention is organized in the brain. It shows that seeing something is not the same as noticing it, and that difference is central to perception research. The term also helps you connect brain damage to behavior. When a case description says a person eats from only one side of a plate or ignores one side of a drawing, you can trace that pattern back to impaired spatial attention, often tied to the right parietal lobe. That kind of reasoning is exactly what cognitive psychology asks you to do: move from a symptom to the underlying mental process. It also helps you compare normal attention with disrupted attention. Spatial neglect makes hemispheric lateralization easier to understand, because it shows that the two hemispheres do not always contribute equally to spatial awareness. In other words, one side of the brain can be especially important for keeping track of both sides of space. For essays, discussion posts, and quiz questions, spatial neglect is a strong example when you need to explain brain-based explanations of behavior. It is concrete, visual, and easy to connect to rehabilitation strategies, testing methods, and everyday functioning. ## Connections ### [Hemispatial Neglect](/cognitive-psychology/key-terms/hemispatial-neglect) This is the more precise name many psychology texts use for the same general pattern. If you see both terms, they usually point to the same left-sided or right-sided failure to attend to space after brain damage. Use the surrounding context to see whether the writer is talking about one side of space specifically or the broader syndrome. ### [Right Hemisphere](/cognitive-psychology/key-terms/right-hemisphere) Spatial neglect is strongly linked to damage in the right hemisphere, especially the right parietal region. That connection shows why the right side of the brain is often discussed as especially important for attention across both sides of space. In class, this term helps you explain why neglect is so often left-sided. ### Visual Attention Spatial neglect is not a basic vision problem, it is an attention problem. The person may still have input from the neglected side, but visual attention fails to prioritize it. That makes the term a good example when you are separating sensation, perception, and attention in cognitive psychology. ### Functional Connectivity Neglect is not always explained by one damaged spot alone. Changes in how brain regions communicate can worsen the loss of spatial awareness, because attention depends on networks, not just isolated areas. This term helps you think beyond a single lesion and consider how disrupted communication affects behavior. ## On the AP Exam A quiz item or case study might describe a patient who eats only from the right side of a plate or misses items on the left side of a page. Your job is to identify spatial neglect and connect it to right hemisphere or right parietal lobe damage. If the question asks for evidence, mention tasks like line bisection or cancellation tests, since those reveal whether the person is ignoring one side of space. In short-answer responses, use the term to explain why the problem is attentional rather than purely visual. If the prompt compares two disorders, point out that spatial neglect is about failing to attend to one side of space, not losing memory or language. That makes it a useful term for case analysis, brain-behavior matching, and interpreting clinical examples. ## Spatial Neglect vs Visual Agnosia Spatial neglect is about failing to attend to one side of space, while visual agnosia is a problem recognizing what you see. A person with neglect may ignore half the page, but a person with visual agnosia can see the object and still not identify it correctly. The first is an attention and spatial awareness problem, the second is a recognition problem. ## Key Takeaways - Spatial neglect is a failure to notice or respond to one side of space, usually after right hemisphere damage. - The condition is an attention problem, not just a vision problem, so a person may still detect stimuli if attention is directed there. - Common signs include eating from one side of a plate, missing one side of a drawing, or ignoring objects on one side of the room. - Line bisection and cancellation tasks are classic ways to spot the pattern in class or in a clinical setting. - The term helps explain how brain regions, especially the right parietal lobe, support spatial awareness and everyday behavior. ## FAQs ### What is spatial neglect in Cognitive Psychology? Spatial neglect is a disorder where a person ignores one side of space, usually because of damage to the right hemisphere. In Cognitive Psychology, it is used to show how attention helps the brain build an accurate picture of the world. The person may still have basic vision, but they fail to notice stimuli on the neglected side. ### Is spatial neglect the same as being blind on one side? No. A person with spatial neglect can often see the neglected side when attention is directed there, which is why it is not the same as blindness. The main problem is that the brain is not consistently attending to that side in normal situations. That difference is one reason psychologists study it so closely. ### What brain area is usually damaged in spatial neglect? Spatial neglect is commonly linked to damage in the right parietal lobe and other right hemisphere attention networks. The exact pattern can vary, but the right side of the brain is especially important for spatial awareness across both halves of space. That is why neglect often appears on the left side. ### How do psychologists test for spatial neglect? Common tests include line bisection tasks and cancellation tasks. In a line bisection task, the person marks the middle of a line, and in a cancellation task, they cross out target items on a page. If they consistently miss items on one side, that points to spatial neglect. ## Related Study Guides - [15.1 Brain Structure and Cognitive Functions](/cognitive-psychology/unit-15/brain-structure-cognitive-functions/study-guide/GHPWrThTJNrneUAI) ## About This Document Canonical Fiveable pages are available as Markdown at the same path plus `.md`. - [llms.txt](https://fiveable.me/llms.txt): index of Fiveable's sections and URL patterns - [llms-full.txt](https://fiveable.me/llms-full.txt): complete subject and unit listing - [MCP server](https://fiveable.me/mcp): call Fiveable as tools instead of fetching pages (`https://fiveable.me/api/mcp`) - [MCP server for AP teachers](https://fiveable.me/mcp/teachers): a teacher's classes, assignments and AP-rubric grading (`https://fiveable.me/api/mcp/teacher`) ## Structured Data ```json {"@context":"https://schema.org","@graph":[{"@type":"LearningResource","@id":"https://fiveable.me/cognitive-psychology/key-terms/spatial-neglect#resource","name":"Spatial Neglect | Cognitive Psychology","url":"https://fiveable.me/cognitive-psychology/key-terms/spatial-neglect","learningResourceType":"Concept explainer","educationalLevel":"AP® / High School","about":{"@id":"https://fiveable.me/cognitive-psychology/key-terms/spatial-neglect#term"},"audience":{"@type":"EducationalAudience","educationalRole":"student"},"dateModified":"2026-07-03T02:21:13.816Z","isPartOf":{"@type":"Collection","name":"Cognitive Psychology Key Terms","url":"https://fiveable.me/cognitive-psychology/key-terms"},"author":{"@type":"Organization","@id":"https://fiveable.me/editorial#content-team","name":"Fiveable Content Team","url":"https://fiveable.me/editorial","parentOrganization":{"@id":"https://fiveable.me/#organization"},"member":[{"@type":"Person","name":"Amanda DoAmaral","sameAs":["https://www.linkedin.com/in/adoamaral"]},{"@type":"Person","name":"Becky Bahr","sameAs":["https://www.linkedin.com/in/becky-bahr-b52743132"]}]},"publisher":{"@type":"Organization","name":"Fiveable","url":"https://fiveable.me"}},{"@type":"DefinedTerm","@id":"https://fiveable.me/cognitive-psychology/key-terms/spatial-neglect#term","name":"Spatial Neglect","description":"Spatial neglect is a cognitive disorder where someone fails to notice one side of space, usually after right hemisphere damage. 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