MEM-AV: A VR-Based Approach to Improve Autobiographical Memory Retrieval in Addiction

Introduction

The study of autobiographical memories (AMs)—that are intimately tied to one’s personal history—has been explored in populations suffering from addiction. Existing research suggests that individuals with addiction face similar challenges to those with other mental disorders when attempting to retrieve their AMs, often encountering memories that are uncomfortable. ¹ In particular, patients in drug rehabilitation centers are reluctant to share their memories, in part due to fear of stigma and potential legal repercussions. This concern fosters a heightened state of vigilance that inhibits the spontaneous sharing of personal experiences. In addition, a pervasive distrust of psychotherapists and caregivers, especially at the beginning of the rehabilitation journey, further hinders the development of autobiographical awareness—a key element for mental health improvement.

Recognizing these barriers underscores the need for innovative methods to support the retrieval of AMs for individuals struggling with addiction. The correlation between the retrieval of AMs and improved mental health and well-being is well documented. ² Therefore, providing access to such memories is critical to the effective treatment of these individuals.

The MEM-AV project aims to develop strategies to enhance the retrieval of AMs in patients in addiction recovery programs. Specifically, MEM-AV seeks to investigate the potential of artificial intelligence (AI) platforms to aid in the retrieval of AMs triggered by both neutral and addiction-related cue words. The project seeks to determine if avatars can facilitate the sharing of personal stories and enhance the specificity of AMs.

This initiative is a collaboration between the Humane Technology Lab of the Università Cattolica del Sacro Cuore in Milan, Italy, and the drug rehabilitation center “Le.L.A.T.” in Messina, Italy. The MEM-AV project represents a promising venture in the use of technology for therapeutic benefit and aims to pave the way for improved mental health outcomes for people struggling with addiction.

How AMs Play a Role in Addiction

AMs encapsulate our personal experiences, ranging from broad, generalized events to acute, specific incidents. The struggle to recall detailed AMs is a hallmark of several psychological conditions. Research has shown that difficulties in accessing accurate AMs are common among individuals with substance use disorders, as well as those with eating disorders, depression, posttraumatic stress disorder, and borderline personality disorder.^3,4 This impairment is particularly significant in individuals with substance use disorders, where the illness is often associated with avoidance of self-awareness and avoidance of personal historical contexts. ⁵

The tendency to recall overgeneralized AMs may serve as a mechanism of emotional self-regulation. By either avoiding the act of remembering or recalling memories in a vague manner, individuals can reduce the emotional pain associated with specific life events. However, this coping strategy has long-term detrimental effects, contributing to the persistence of substance use disorders and resistance to therapeutic interventions. ⁶

In light of these findings, it is critical to explore innovative strategies to circumvent the tendency to avoid or generalize AMs. Encouraging individuals with substance use disorders to engage more fully with their AMs could foster a deeper connection to their life stories. Facilitating a nuanced understanding and acceptance of these experiences could empower them to integrate these memories into their narrative identities. This process, in turn, could reduce barriers to recovery by addressing and mitigating the distressing experiences that often fuel addiction.

Avatar Versus Face-to-Face: Two Different Ways to Facilitate AMs Recovery

AI platforms offer a novel and supportive environment for individuals with substance use disorders to engage with their AMs. These platforms facilitate the creation of personalized avatars, which can foster a sense of anonymity and safety for users. The layer of anonymity provided by AI encourages users to share personal experiences and introspect their AMs with an avatar, mitigating the discomfort and vulnerability often associated with direct human interactions.

This digital medium allows users to articulate their experiences and delve into their memories, alongside reflecting upon their thoughts and emotions, free from the interpersonal dynamics—such as shyness, social desirability concerns, and mistrust—that frequently hamper traditional face-to-face therapy sessions. Consequently, this approach could enhance the recovery and articulation of AMs, by providing a less intimidating space for patients, thus reducing the influence of social pressures and expectations. ⁷

The advantages of using avatars in AI platforms for therapeutic purposes extend beyond patient comfort, offering tangible benefits for both patients and health care providers, including:

Facilitating Access to Memories: Exploring whether individuals with substance use disorders can more effectively access their AMs when interacting with an avatar, as opposed to conventional interactions with psychotherapists or caregivers.

By leveraging AI to provide an innovative setting for engaging with AMs, this approach introduces a distinctive therapeutic avenue. It suggests a potential shift in how recovery processes are facilitated, potentially making a significant impact on the treatment landscape for substance use disorders by offering a complementary method that aligns with contemporary technological advancements and social dynamics.

First Results from a Pilot Study with Patients from the Drug Rehabilitation Center

The study employed a novel experimental design, engaging participants in the Autobiographical Memory Test (AMT) ⁸ through two distinct modalities: traditional face-to-face sessions and interactions facilitated by an avatar. Participants were exposed to cue words, either neutral or linked to substances, prompting them to retrieve and share corresponding AMs. The primary aim was to assess whether the avatar-mediated environment enhances the sharing and retrieval of personal experiences and AMs.

Preliminary results from the drug rehabilitation center, involving eight male participants, have yielded encouraging outcomes. Notably, these early findings suggest a positive influence of avatar interaction on memory recall. Participants reported a greater number of positive memories in sessions with the avatar than in the face-to-face encounters. Moreover, the response time to cue words was notably longer in face-to-face settings, suggesting a more strenuous effort required to access AMs in such interactions. This contrast highlights the potential ease provided by the avatar-mediated sessions in retrieving memories.

Additionally, memories recalled with the avatar tended to be older than those surfaced during face-to-face discussions. The significance of accessing older memories lies in the depth of autobiographical awareness it suggests; recalling distant past events is indicative of a more robust retrieval process as opposed to memories of recent occurrences. The study also observed a prevalence of overgeneral memories in both scenarios, aligning with existing literature that points to a challenge in recalling specific AMs among patients with substance use disorders.

These preliminary observations are promising, underscoring not just the feasibility of using avatars for memory recall tasks but also their potential to enhance the process. The findings suggest that avatar interactions may facilitate a more effective engagement with AMs, providing valuable insights into the design and implementation of therapeutic interventions aimed at improving mental health outcomes for individuals in recovery.

Conclusions

The integration of new technologies into the clinical environment of drug rehabilitation centers heralds potentially transformative insights into patient engagement and therapeutic processes. The advent of avatars is not intended to replace the invaluable work of nurses and psychotherapists but to augment their efforts. By fostering a synergistic dynamic, avatars can serve as a novel tool for navigating social and interpersonal hurdles, thereby enhancing the therapeutic journey for individuals struggling with addiction.

The MEM-AV project embodies this innovative thrust, positing that avatar interactions may not only facilitate the recovery of AMs, but also make the process more immersive. The novelty and emotional engagement elicited by interacting with an entity distinct from traditional human counterparts could catalyze patients’ ability to piece together their life stories. Such reconstruction is central to the enrichment of narrative identity and, by extension, the promotion of mental health.

Echoing these sentiments, Anna Maria Garufi, president of the drug rehabilitation center Le.L.A.T., underscores the critical importance of autobiographical reconstruction in the therapeutic endeavor. Garufi sheds light on the common misattribution among people with addictions, in which the effects of substance use are often mistaken for its causes: “Drug addicts usually confuse the effect with the cause and believe that they have had problems in life because they are addicted to drugs. They think that the drug has destroyed their relationships and their self-esteem. They do not realize that the exact opposite is true. The discomfort was there first.” She articulates a nuanced understanding of addiction as a manifestation of pre-existing emotional distress, often masked by drug use. In this light, recovering and reinterpreting personal histories emerge as crucial steps toward effective and lasting recovery. Garufi’s perspective emphasizes that understanding the sequence of emotional distress that precedes substance addiction is essential to achieving a comprehensive and lasting healing process.

By leveraging technological innovation, the MEM-AV project demonstrates the significant benefits of avatars in facilitating AM recovery for addiction patients. This approach not only underscores the therapeutic potential of digital tools but also highlights a broader opportunity to revolutionize recovery strategies for substance use disorders. Through these technological avenues, the field of addiction treatment is poised to expand its repertoire of interventions and improve patient outcomes and experiences on the road to recovery.