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Capgras Syndrome: How Can a Familiar Face Become a Stranger?

Neuropsychology
İpek Kozluca Author: İpek Kozluca
4 minreading time
Capgras Syndrome: How Can a Familiar Face Become a Stranger?

Imagine looking at someone you see every day, someone whose voice you know and with whom you have shared many memories, but suddenly feeling as if they are a complete stranger. Their face, voice, and behavior have not changed at all. However, you strongly believe that they are not the person you know. Although this situation may sound unusual, it is related to a rare condition known as Capgras Syndrome, which is studied in psychology and neuropsychology.

What Is Capgras Syndrome?

Capgras Syndrome is a rare condition in which a person believes that someone close to them has been replaced by another person who looks exactly like them. It was first described in 1923 by French psychiatrists Joseph Capgras and Jean Reboul-Lachaux (Coltheart & Davies, 2022). People experiencing this syndrome often believe that their family members, partners, or close friends are not who they appear to be. Interestingly, they may recognize the person’s face but still question their identity.

For example, a person with Capgras Syndrome may look at their mother and admit that she looks exactly like their real mother. However, they may still believe that the person standing in front of them is someone else pretending to be her. Even when family members try to explain that this belief is not true, the person may find it difficult to change their mind. This is because the situation is not simply a misunderstanding but a strong belief that feels completely real to them.

This condition can also affect the people around the individual. For instance, family members may feel confused, upset, or helpless when someone they love repeatedly treats them like strangers. Meanwhile, the person experiencing Capgras Syndrome may feel afraid, anxious, or uncomfortable because they cannot fully trust the identity of someone familiar. Therefore, understanding this syndrome also means recognizing the emotional difficulties it can create.

The Connection Between Capgras Syndrome and the Brain

How can our brain make someone we know so well feel like a stranger? To understand this question, we first need to look at how the brain recognizes faces.

When we see someone’s face, our brain does more than identify physical features such as their eyes, nose, or mouth. It also connects that face with our memories, experiences, and emotions. For example, when we see a close friend, we do not simply remember who they are. We may also experience feelings of comfort, closeness, and familiarity.

Certain areas of the temporal lobe, especially the fusiform gyrus, play an important role in face recognition. At the same time, structures such as the amygdala, which is involved in emotional processing, help us respond emotionally to familiar people.

According to one theory, Capgras Syndrome may develop when the connection between face recognition and emotional familiarity is disrupted. In other words, a person may recognize a familiar face but fail to experience the emotional connection they would normally feel. As the brain tries to understand this unexpected difference, the person may reach an incorrect conclusion: “This person looks like my mother, but she cannot be my real mother.”

However, researchers suggest that this explanation alone is not enough. A reduced feeling of familiarity does not automatically cause someone to develop such a strong belief. For this reason, researchers also study how the brain evaluates information, recognizes mistakes, and changes existing beliefs.

The frontal regions of the brain may also play an important role in this process. These areas help us evaluate information and question whether our thoughts are accurate. Some researchers suggest that difficulties in these processes may explain why a person continues to believe something even when there is evidence against it. However, Capgras Syndrome cannot be explained by one brain area or a single mechanism in every patient.

When Does Capgras Syndrome Occur?

Capgras Syndrome may occur on its own, but it is also associated with conditions such as schizophrenia, Alzheimer’s disease, Lewy body dementia, and certain types of brain injury. Changes in brain processes related to face recognition, emotional responses, and reality evaluation may contribute to its development.

It is also important to understand the difference between Capgras Syndrome and prosopagnosia. Prosopagnosia is a condition in which a person has difficulty recognizing faces. In Capgras Syndrome, however, the person may recognize the face but believe that the individual is not who they appear to be. This difference shows that recognizing someone’s face and feeling that they are familiar are not exactly the same processes (Ellis & Lewis, 2022).

Does Our Brain Always Tell Us the Truth?

Capgras Syndrome raises interesting questions about how our brain understands the world around us. In everyday life, we rarely question the identities of people we know. However, we do not often think about how our memories, emotions, and perceptions work together to create this sense of certainty.

This syndrome reminds us that recognizing someone involves more than remembering their face. The feeling of familiarity is also an important part of this experience. When different types of information in the brain do not match, the way we understand reality may sometimes change.

In conclusion, Capgras Syndrome is not only a rare psychological condition but also an interesting example of how the brain creates our sense of identity, emotion, and reality. Perhaps the most important question is this: What truly makes us recognize someone? Is it remembering their face, or is it the feeling of familiarity we experience when we see them?

Kaynakça

  • Coltheart, M., & Davies, M. (2022). What is a Capgras delusion? Cognitive Neuropsychiatry, 27(1), 69–82. https://doi.org/10.1080/13546805.2021.2011185
  • Ellis, H. D., & Lewis, M. B. (2001). Capgras delusion: A window on face recognition. Trends in Cognitive Sciences, 5(4), 149–156. https://doi.org/10.1016/S1364-6613(00)01620-X
İpek Kozluca İpek Kozluca
İpek Kozluca is an undergraduate student in the Department of Psychology at Bahçeşehir University. She has a strong interest in Clinical Psychology, Sport Psychology, and Social Psychology. She has enriched her academic background through certificates provided by the American Psychological Association (APA) and Yale University, as well as participation in the Alfa Psychology Summit. In addition, she completed a clinical psychology internship at Rehber Clinic, where she contributed to her professional development by observing clients and actively engaging in clinical processes and operations. She also completed an internship at KidZania Istanbul, where she gained experience in child development and communication, while having the opportunity to observe and work within the field of child psychology. Currently, she is a member of the Content Creation Team at World Human Relief, where she actively contributes to social awareness projects. Furthermore, she continues to write for Psychology Times, producing articles on topics such as anxiety and stress management, communication difficulties, depression and mood disorders, self-esteem development, and other areas informed by her diverse experiences and interests.