Depersonalization and Autism

[a poem written many years back that captures the essence of Depersonlization]

What is  Depersonalization Disorder (DPD)

• Loss of body ownership /disembodiment feelings / somatosensory distortions/ loss of agency: distressing feelings of being 'spaced out', detached from one's self, body, and the world (observing yourself from a distance).
• atypical 'flat' time perception (alterations in perception, including disruptions in the perception of time. )

Research findings on DPD and atypical time perception in the NT population

• Distorted perception of time: Tendency to overestimate the duration of time intervals, perceiving time as slower than it actually is which can contribute to the overall sense of detachment (1,2)
• Neural correlates of time perception: fMRI studies show differences in brain activity and connectivity patterns in regions associated with time processing, eg: PFC and parietal cortex (3,4)
• Role of attentional processes: Difficulties in allocating attention appropriately, leading to a reduced ability to accurately perceive and process temporal information (5,6)
• Emotional factors: Emotional states, eg anxiety and stress, can modulate time perception, leading to temporal distortions. DP folks often experience heightened levels of anxiety and emotional distress, which may contribute to their altered perception of time. (1,2)

Caveat: This is a complex phenomena and further research is needed to fully understand underlying mechanisms.

Reasons why DPD may co-occur with autism

• Both involve atypical sensory processing suggesting a potential shared underlying connection. 
• Overlap in Symptoms: Though there are distinct dx criteria, both share some overlapping symptoms, such as a sense of detachment from oneself, difficulties with emotional regulation, and social challenges. 
• Neurobiological Factors: Though the specific mechanisms and neural circuits may differ, both potentially involve alterations in brain functioning and connectivity.
• Impact on Functioning: Co-occurrence may exacerbate the challenges in everyday functioning especially in areas of social interactions and emotional well-being.

Research Findings in Autism and Implications

• 17% autistics met the diagnostic criteria for DPD, compared to 2% non-autistic (7)
• Compared to controls, autism+DPD more likely to have
• higher anxiety and depression (8)
• more difficulty with social interaction and communication (9)
• more repetitive behaviors and special interests (10)

Caveat: Research is all over the place when it comes to autism, so nothing is set in stone.

 

Versions of this article for Academic/Scientific Audience and #PlainSpeak for Lay Reader

What is Depersonalization Disorder

In Plain Language Version for Lay Reader

What is Depersonalization Disorder (DPD)?

Depersonalization Disorder (DPD) is a condition where people feel disconnected from their own body, self, and surroundings. This might feel like being "spaced out," watching yourself from a distance, or not feeling in control of your own actions. People with DPD may also have strange experiences with their senses and a warped sense of time, like feeling that time is moving slower than it really is.

Time Perception in DPD

• Distorted Time: People with DPD often feel that time moves slower, making them overestimate how long things take. This can add to their feeling of being detached.
• Brain Differences: Brain scans show that people with DPD have different brain activity in areas that process time, like the prefrontal cortex and parietal cortex.
• Attention Issues: People with DPD may have trouble focusing their attention, which makes it hard for them to accurately sense time.
• Emotional Impact: High anxiety and stress can change how people with DPD perceive time, making it feel even more distorted.

Why DPD May Happen Alongside Autism

• Sensory Processing: Both DPD and autism involve unusual ways of processing sensory information, suggesting a possible link.
• Similar Symptoms: While DPD and autism are different, they share some symptoms, like feeling detached from oneself and having trouble with emotions and social situations.
• Brain Function: Both conditions may involve changes in brain function and connectivity, although the specific details differ.
• Impact on Daily Life: Having both DPD and autism can make everyday tasks, social interactions, and emotional well-being more challenging.

Research Findings

• Prevalence: About 17% of autistic people have DPD, compared to 2% of non-autistic people.
• Additional Challenges: Autistic people with DPD are more likely to experience higher anxiety and depression, more difficulty with social interaction and communication, and more repetitive behaviors and special interests.
• Need for More Research: Understanding the connection between autism and DPD is complex, and more research is needed to uncover the full picture.

Versions of this article for Academic/Scientific Audience and #PlainSpeak for Lay Reader