Aging is a gradual, multifactorial and continuous process characterized by the progressive loss of biological function and degeneration associated with the onset of age-related diseases. In Portugal, the aging of the population is particularly noticeable, with the population projected to fall from 10.3 to 7.5 million by 2080, while the number of elderly people will increase from 2.1 to 2.8 million. Among the health problems associated with aging, dementia/neurocognitive impairment major stands out as a disabling progressive neurological condition. It is characterized by deterioration in cognitive domains such as attention, memory, language, and social cognition, as well as being associated with neuropsychiatric symptoms (SNP) such as aggression, agitation, depression, anxiety, delusions, hallucinations, apathy, disinhibition, and communication difficulties. In 2018, it was estimated that 50 million people in the world were living with dementia, a figure that could triple by 2050. PARO

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Home / Publications / Publication

PARO um robô social

Publication type: Article Summary
Original title: Roboterapia-PARO em pessoas idosas com perturbação neurocognitiva
Article publication date: November 2019
Source: Repositório Institucional da Universidade Católica Portuguesa
Author: Rita Gomes
Supervisors: João Amado & Rosa Silva

What is the goal, target audience, and areas of digital health it addresses?
     The aim of the study was to evaluate the effectiveness of Robotherapy-PARO as a non-pharmacological intervention to improve the well-being of elderly people with dementia. The target audience includes elderly people diagnosed with dementia, formal and informal carers, social workers, healthcare professionals, sociologists, and socio-cultural animators. This research is part of digital health, exploring the use of advanced technologies such as therapeutic robots.

What is the context?
     Aging is a gradual, multifactorial and continuous process characterized by the progressive loss of biological function and degeneration associated with the onset of age-related diseases. In Portugal, the aging of the population is particularly noticeable, with the population projected to fall from 10.3 to 7.5 million by 2080, while the number of elderly people will increase from 2.1 to 2.8 million.

     Among the health problems associated with aging, dementia/neurocognitive impairment major stands out as a disabling progressive neurological condition. It is characterized by deterioration in cognitive domains such as attention, memory, language, and social cognition, as well as being associated with neuropsychiatric symptoms (SNP) such as aggression, agitation, depression, anxiety, delusions, hallucinations, apathy, disinhibition, and communication difficulties. In 2018, it was estimated that 50 million people in the world were living with dementia, a figure that could triple by 2050.

     In residential facilities for the elderly, people with dementia often remain inactive for half the time they are awake. In addition, while some live in low-stimulation environments, others are exposed to excessive stimuli, such as too much light and noise at night. These circumstances aggravate SNP and contribute to depressed mood, making it essential to balance periods of sensory stimulation and relaxation.

     Multisensory stimulation is an effective non-pharmacological approach to reduce SNP at any stage of dementia. This therapy, based on individualized attention, uses sensory stimuli such as hearing, sight and touch, adjusting to the specific needs of everyone. It provides a balance between relaxation and active stimulation, promoting well-being and increasing self-confidence. Despite its recognized benefits, its implementation faces significant challenges, such as the high level of inactivity among the elderly, the excessive use of sedation and the lack of specialized training for health professionals.

What are the current approaches?
     Conventional interventions to manage SNP generally involve isolating elderly people with dementia and/or using medication such as analgesics and antipsychotics. Although these drugs offer quick and convenient results, they are associated with serious adverse effects, such as an increased risk of cardiovascular disease and worsening cognitive deterioration, which makes it even more difficult for these elderly people to get involved in activities.

     Alternatives such as multisensory stimulation, cognitive exercises (such as word games), and simplified routines slow cognitive decline, reduce SNP, and improve the quality of life of elderly people with dementia, as well as reducing the risk of carer burnout.

     Social robots stand out as a form of multisensory stimulation therapy, promoting interaction and communication with the elderly. These robots promote positive emotions, reduce feelings of loneliness, and improve mood and social interaction. Studies indicate that elderly people appreciate the presence of robots, with acceptance and therapeutic effect being influenced by the design and materials of the robots. In addition, interaction with robots has been associated with activation of the immune system and a reduction in SNP. Another benefit is the gradual replacement of pet therapy (animal therapy), which presents challenges such as the risk of allergic reactions, the unpredictability of animal behavior and the costs associated with animal care.

What does innovation consist of? How is the impact of this study assessed?
     The innovation of this study consists of evaluating the impact of Robotherapy-PARO in Portugal, using the PARO social robot, developed in Japan, to promote physical, emotional, cognitive and social improvements in elderly people with dementia.

     PARO is a therapeutic robot in the shape of a baby seal, designed with a zoomorphic design to convey comfort and stimulate positive interactions. The choice of a seal, an animal little associated with everyday life, was intentional, avoiding possible negative associations or traumas related to domestic animals. Each device is coated with antibacterial, dirt-resistant fur that is safe for people with medical devices such as pacemakers.

     Equipped with artificial intelligence and 5 types of sensors, PARO allows for sophisticated interaction that is adapted to each user. The touch sensors, located under the fur and whiskers, react to human contact, while light sensors in the nose detect changes in brightness. Temperature and posture sensors, located in the center of the device, adjust the robot’s responses to heat and the user’s position. Microphones make it possible to localize sounds and respond to auditory stimuli. In addition, the robot emits simulated seal sounds, which can be interpreted as signs of pleasure or displeasure and combines movements, sounds and expressions to recreate emotional states and provide an engaging interaction.

     Between March and May 2019, an experimental study was carried out with 10 elderly women institutionalized in a residential structure in the Porto region, aged over 78 years, diagnosed with dementia and moderate to very severe cognitive decline. Sixteen individual sessions of 30 minutes were held over 8 weeks, led by a multidisciplinary team composed of a psychologist, a sociologist, a social worker and a sociocultural animator. The participants interacted with the PARO robotic seal through touch, gaze, gestures and verbal communication, in controlled environments and with the same facilitator during all sessions.

     The impact of the intervention was assessed before and after the sessions, using validated scales: the Global Deterioration Scale (GDS) to determine the degree of cognitive deterioration, the Neuropsychiatric Inventory (NPI) to analyze the SNPs and the Cornell Scale for Depression in Dementia (CSDD) to measure depression states. In some sessions, video recordings were also made to evaluate behaviors, and, in each session, an observational grid was used to record the participants’ interactions with the robot.

What are the main results? What is the impact of these results? What is the future of this technology?
     Robotherapy-PARO revealed high acceptance, with 80% of the participants demonstrating satisfaction and active involvement during the sessions. Although two participants dropped out, which is recurrent in studies of people with dementia, the eight participants who completed the therapy showed significant improvements. Analyses carried out using video-recordings and observational grids revealed that the participants welcomed the PARO seal with enthusiasm, giving it affectionate names and often reacting with smiles. There was an increase in the frequency and duration of affective gestures, such as touches, hugs, glances, and grooming (e.g., brushing the fur). The intervention also promoted improvements in verbal communication, facial expression, and social interaction, as well as significantly reducing SNP, especially agitation, according to the INP scale.

     Although the GDS and CSDD scales did not identify significant changes in cognitive performance or levels of depression, it was observed that elderly people with less cognitive deterioration responded better to therapy. In addition, previous affinity with animals also proved to be a relevant factor in the success of the intervention, with many participants associating PARO with companion animals.

     The results of this study have a significant impact, suggesting that Robotherapy-PARO can be an effective and safe alternative to pharmacological treatments, contributing to reduction the drug burden and improving the quality of life of elderly people with dementia. Additionally, the intervention promoted a more meaningful interaction between carers and elderly people, creating opportunities for more human and empathetic relationships. The implementation of this technology in residential structures can represent a substantial advancement in long-term care.

     The future of Robotherapy-PARO includes conducting studies with control groups and larger, more diverse samples to confirm and expand the results obtained. In addition, it will also be important to adjust the intervention, reducing the duration of sessions for participants with higher levels of cognitive deterioration. To effectively integrate Robotherapy-PARO into the institutional context, it will be crucial to invest in training of carers and health professionals, ensuring appropriate and sustainable use of technology.

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Home / Publications / Publication

PARO um robô social

Publication type: Article Summary
Original title: Roboterapia-PARO em pessoas idosas com perturbação neurocognitiva
Article publication date: November 2019
Source: Repositório Institucional da Universidade Católica Portuguesa
Author: Rita Gomes
Supervisors: João Amado & Rosa Silva

What is the goal, target audience, and areas of digital health it addresses?
     The aim of the study was to evaluate the effectiveness of Robotherapy-PARO as a non-pharmacological intervention to improve the well-being of elderly people with dementia. The target audience includes elderly people diagnosed with dementia, formal and informal carers, social workers, healthcare professionals, sociologists, and socio-cultural animators. This research is part of digital health, exploring the use of advanced technologies such as therapeutic robots.

What is the context?
     Aging is a gradual, multifactorial and continuous process characterized by the progressive loss of biological function and degeneration associated with the onset of age-related diseases. In Portugal, the aging of the population is particularly noticeable, with the population projected to fall from 10.3 to 7.5 million by 2080, while the number of elderly people will increase from 2.1 to 2.8 million.

     Among the health problems associated with aging, dementia/neurocognitive impairment major stands out as a disabling progressive neurological condition. It is characterized by deterioration in cognitive domains such as attention, memory, language, and social cognition, as well as being associated with neuropsychiatric symptoms (SNP) such as aggression, agitation, depression, anxiety, delusions, hallucinations, apathy, disinhibition, and communication difficulties. In 2018, it was estimated that 50 million people in the world were living with dementia, a figure that could triple by 2050.

     In residential facilities for the elderly, people with dementia often remain inactive for half the time they are awake. In addition, while some live in low-stimulation environments, others are exposed to excessive stimuli, such as too much light and noise at night. These circumstances aggravate SNP and contribute to depressed mood, making it essential to balance periods of sensory stimulation and relaxation.

     Multisensory stimulation is an effective non-pharmacological approach to reduce SNP at any stage of dementia. This therapy, based on individualized attention, uses sensory stimuli such as hearing, sight and touch, adjusting to the specific needs of everyone. It provides a balance between relaxation and active stimulation, promoting well-being and increasing self-confidence. Despite its recognized benefits, its implementation faces significant challenges, such as the high level of inactivity among the elderly, the excessive use of sedation and the lack of specialized training for health professionals.

What are the current approaches?
     Conventional interventions to manage SNP generally involve isolating elderly people with dementia and/or using medication such as analgesics and antipsychotics. Although these drugs offer quick and convenient results, they are associated with serious adverse effects, such as an increased risk of cardiovascular disease and worsening cognitive deterioration, which makes it even more difficult for these elderly people to get involved in activities.

     Alternatives such as multisensory stimulation, cognitive exercises (such as word games), and simplified routines slow cognitive decline, reduce SNP, and improve the quality of life of elderly people with dementia, as well as reducing the risk of carer burnout.

     Social robots stand out as a form of multisensory stimulation therapy, promoting interaction and communication with the elderly. These robots promote positive emotions, reduce feelings of loneliness, and improve mood and social interaction. Studies indicate that elderly people appreciate the presence of robots, with acceptance and therapeutic effect being influenced by the design and materials of the robots. In addition, interaction with robots has been associated with activation of the immune system and a reduction in SNP. Another benefit is the gradual replacement of pet therapy (animal therapy), which presents challenges such as the risk of allergic reactions, the unpredictability of animal behavior and the costs associated with animal care.

What does innovation consist of? How is the impact of this study assessed?
     The innovation of this study consists of evaluating the impact of Robotherapy-PARO in Portugal, using the PARO social robot, developed in Japan, to promote physical, emotional, cognitive and social improvements in elderly people with dementia.

     PARO is a therapeutic robot in the shape of a baby seal, designed with a zoomorphic design to convey comfort and stimulate positive interactions. The choice of a seal, an animal little associated with everyday life, was intentional, avoiding possible negative associations or traumas related to domestic animals. Each device is coated with antibacterial, dirt-resistant fur that is safe for people with medical devices such as pacemakers.

     Equipped with artificial intelligence and 5 types of sensors, PARO allows for sophisticated interaction that is adapted to each user. The touch sensors, located under the fur and whiskers, react to human contact, while light sensors in the nose detect changes in brightness. Temperature and posture sensors, located in the center of the device, adjust the robot’s responses to heat and the user’s position. Microphones make it possible to localize sounds and respond to auditory stimuli. In addition, the robot emits simulated seal sounds, which can be interpreted as signs of pleasure or displeasure and combines movements, sounds and expressions to recreate emotional states and provide an engaging interaction.

     Between March and May 2019, an experimental study was carried out with 10 elderly women institutionalized in a residential structure in the Porto region, aged over 78 years, diagnosed with dementia and moderate to very severe cognitive decline. Sixteen individual sessions of 30 minutes were held over 8 weeks, led by a multidisciplinary team composed of a psychologist, a sociologist, a social worker and a sociocultural animator. The participants interacted with the PARO robotic seal through touch, gaze, gestures and verbal communication, in controlled environments and with the same facilitator during all sessions.

     The impact of the intervention was assessed before and after the sessions, using validated scales: the Global Deterioration Scale (GDS) to determine the degree of cognitive deterioration, the Neuropsychiatric Inventory (NPI) to analyze the SNPs and the Cornell Scale for Depression in Dementia (CSDD) to measure depression states. In some sessions, video recordings were also made to evaluate behaviors, and, in each session, an observational grid was used to record the participants’ interactions with the robot.

What are the main results? What is the impact of these results? What is the future of this technology?
     Robotherapy-PARO revealed high acceptance, with 80% of the participants demonstrating satisfaction and active involvement during the sessions. Although two participants dropped out, which is recurrent in studies of people with dementia, the eight participants who completed the therapy showed significant improvements. Analyses carried out using video-recordings and observational grids revealed that the participants welcomed the PARO seal with enthusiasm, giving it affectionate names and often reacting with smiles. There was an increase in the frequency and duration of affective gestures, such as touches, hugs, glances, and grooming (e.g., brushing the fur). The intervention also promoted improvements in verbal communication, facial expression, and social interaction, as well as significantly reducing SNP, especially agitation, according to the INP scale.

     Although the GDS and CSDD scales did not identify significant changes in cognitive performance or levels of depression, it was observed that elderly people with less cognitive deterioration responded better to therapy. In addition, previous affinity with animals also proved to be a relevant factor in the success of the intervention, with many participants associating PARO with companion animals.

     The results of this study have a significant impact, suggesting that Robotherapy-PARO can be an effective and safe alternative to pharmacological treatments, contributing to reduction the drug burden and improving the quality of life of elderly people with dementia. Additionally, the intervention promoted a more meaningful interaction between carers and elderly people, creating opportunities for more human and empathetic relationships. The implementation of this technology in residential structures can represent a substantial advancement in long-term care.

     The future of Robotherapy-PARO includes conducting studies with control groups and larger, more diverse samples to confirm and expand the results obtained. In addition, it will also be important to adjust the intervention, reducing the duration of sessions for participants with higher levels of cognitive deterioration. To effectively integrate Robotherapy-PARO into the institutional context, it will be crucial to invest in training of carers and health professionals, ensuring appropriate and sustainable use of technology.

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