Frontiers in Robotics and AI最新文献

Background: Head-mounted virtual reality (VR) simulations are increasingly explored in healthcare, particularly in patient education, stroke rehabilitation, and surgical training. While VR-based simulation plays a growing role in robotic-assisted surgery (RAS) training, the implications of head-mounted VR in this context remain underexamined.

Method: This prospective, randomised, controlled trial with a single-arm crossover compared two training modalities: a head-mounted VR simulation and a conventional console-based simulation. Participants in the experimental group used head-mounted VR as their primary training method, while the control group trained on a conventional console. Both groups completed a running suture task at baseline, midterm, and final assessments on the surgical console. The primary outcome was the composite score from the final assessment.

Results: Fourteen participants were equally distributed between the two arms. Baseline scores showed no significant differences. A two-way repeated measures ANOVA demonstrated significant overall improvement across assessments (F (1.688, 20.26) = 48.34, p < 0.001, partial η² = 0.80). No statistical difference was found in final composite scores (mean difference: 8.4 ± 9.45, p = 0.391, Cohen's d = -0.48), midterm scores, or granular kinematic data. However, non-inferiority could not be established as the confidence interval fell outside our pre-set margin. The crossover group required less time (mean difference: 39 ± 9.01 min, p = 0.004) and fewer attempts (mean difference: 8 ± 2.2, p = 0.009) to reach benchmark performance compared to the control group.

Conclusion: Both head-mounted VR and console-based training significantly improved fundamental RAS skills in novices. While our study showed that the VR training shortened the time and attempts required to reach proficiency benchmarks, the small scale of this trial and the breadth of the confidence intervals mean the results should be viewed as preliminary observations. These results provide an initial signal of feasibility that warrants confirmation in larger studies.

A cybernetic avatar (CA) is a concept that encompasses not only avatars representing virtual bodies in cyberspace but also information and communication technology (ICT) and robotic technologies that enhance the physical, cognitive, and perceptual capabilities of humans. CAs can enable multiple people to remotely operate numerous avatars and robots together to perform complex tasks on a large scale and create the necessary infrastructure for their operation and other related activities. However, due to the novelty of this concept, the ethical, legal, and social implications (ELSI) of CAs have not been discussed sufficiently. Therefore, the objective of this paper is to provide an overview of ELSI in the context of a CA, taking into account the implications from fields similar to that of CAs, such as robotic avatars, virtual avatars, metaverses, virtual reality, extended reality, social robots, human-robot interaction, telepresence, telexistence, embodied technology, and exoskeletons. In our review of ELSI in related fields, we found common themes: safety and security, data privacy, identity theft and identity loss, manipulation, intellectual property management, user addiction and overdependence, cyber abuse, risk management in a specific domain (e.g., medical applications), regulatory gaps, balance between free expression and harmful content, accountability, transparency, distributive justice, prevention of inequalities, dual use, and conceptual changes of familiarity. These issues should not be ignored when considering the social implementation of CAs.

Wetware Network-Based Artificial Intelligence (WNAI) introduces a new approach to robotic cognition and artificial intelligence: autonomous cognitive agents built from synthetic chemical networks. Rooted in Wetware Neuromorphic Engineering, WNAI shifts the focus of this emerging field from disembodied computation and biological mimicry to reticular chemical self-organization as a substrate for cognition. At the theoretical level, WNAI integrates insights from network cybernetics, autopoietic theory and enaction to frame cognition as a materially grounded, emergent phenomenon. At the heuristic level, WNAI defines its role as complementary to existing leading approaches. On the one hand, it complements embodied AI and xenobotics by expanding the design space of artificial embodied cognition into fully synthetic domains. On the other hand, it engages in mutual exchange with neural network architectures, advancing cross-substrate principles of network-based cognition. At the technological level, WNAI offers a roadmap for implementing chemical neural networks and protocellular agents, with potential applications in robotic systems requiring minimal, adaptive, and substrate-sensitive intelligence. By situating wetware neuromorphic engineering within the broader landscape of robotics and AI, this article outlines a programmatic framework that highlights its potential to expand artificial cognition beyond silicon and biohybrid systems.

As robots became increasingly integrated into daily life, their ability to influence human emotions through verbal and nonverbal expressions is gaining attention. While robots have been explored for their role in emotional expression, their potential in emotion regulation particularly in mitigating or amplifying embarrassment remains under-explored in human-robot interaction. To address this gap, this study investigates whether and how robots can regulate the embarrassment emotion through their responses. A between-subjects experiment was conducted with 96 participants (48 males and 48 females) using the social robot Furhat. Participants experienced an embarrassing situation induced by a failure of meshing scenario, followed by the robot adopting one of three response attitudes: neutral, empathic, or ridiculing. Additionally, the robot's social agency was manipulated by varying its facial appearance between a human-like and an anime-like appearances. The findings indicate that embarrassment was effectively induced, as evidenced by physiological data, body movements, facial expressions, and participants' verbal responses. The anime-faced robot elicited lower embarrassment and arousal due to its lower perceived social agency and anthropomorphism. The robot's attitude was the dominant factor shaping participants' emotional responses and perceptions. The neutral and empathic attitudes with an anime face were found to be the most effective in eliciting mild emotions and mitigating embarrassment. Interestingly, an empathic attitude is suspected to be favored over a neutral one as it elicited the lowest embarrassment. However, an empathic attitude risks shaming the participant due to its indirect confrontation that inherently acknowledges the embarrassing incident which is undesirable in Japanese culture. Nevertheless, in terms of the robot's perceived evaluation by participants, a neutral attitude was the most favored. This study highlights the role of robot responses in emotion regulation, particularly in embarrassment control, and provides insights into designing socially intelligent robots that can modulate human emotions effectively.

Collaboration between humans and robots is essential for optimizing the performance of complex tasks in industrial environments, reducing worker strain, and improving safety. This paper presents an integrated human-robot collaboration (HRC) system that leverages advanced intention recognition for real-time task sharing and interaction. By utilizing state-of-the-art human pose estimation combined with deep learning models, we developed a robust framework for detecting and predicting worker intentions. Specifically, we employed LSTM-based and transformer-based neural networks with convolutional and pooling layers to classify human hand trajectories, achieving higher accuracy compared to previous approaches. Additionally, our system integrates dynamic movement primitives (DMPs) for smooth robot motion transitions, collision prevention, and automatic motion onset/cessation detection. We validated the system in a real-world industrial assembly task, demonstrating its effectiveness in enhancing the fluency, safety, and efficiency of human-robot collaboration. The proposed method shows promise in improving real-time decision-making in collaborative environments, offering a safer and more intuitive interaction between humans and robots.

Dexterous manipulation is a crucial yet highly complex challenge in humanoid robotics, demanding precise, adaptable, and sample-efficient learning methods. As humanoid robots are usually designed to operate in human-centric environments and interact with everyday objects, mastering dexterous manipulation is critical for real-world deployment. Traditional approaches, such as reinforcement learning and imitation learning, have made significant strides, but they often struggle due to the unique challenges of real-world dexterous manipulation, including high-dimensional control, limited training data, and covariate shift. This survey provides a comprehensive overview of these challenges and reviews existing learning-based methods for real-world dexterous manipulation, spanning imitation learning, reinforcement learning, and hybrid approaches. A promising yet underexplored direction is interactive imitation learning, where human feedback actively refines a robot's behavior during training. While interactive imitation learning has shown success in various robotic tasks, its application to dexterous manipulation remains limited. To address this gap, we examine current interactive imitation learning techniques applied to other robotic tasks and discuss how these methods can be adapted to enhance dexterous manipulation. By synthesizing state-of-the-art research, this paper highlights key challenges, identifies gaps in current methodologies, and outlines potential directions for leveraging interactive imitation learning to improve dexterous robotic skills.

Navigating in unknown environments without prior maps poses a significant challenge for mobile robots due to sparse rewards, dynamic obstacles, and limited prior knowledge. This paper presents an Improved Deep Reinforcement Learning (DRL) framework based on the Twin Delayed Deep Deterministic Policy Gradient (TD3) algorithm for adaptive mapless navigation. In addition to architectural enhancements, the proposed method offers theoretical benefits byincorporates a latent-state encoder and predictor module to transform high-dimensional sensor inputs into compact embeddings. This compact representation reduces the effective dimensionality of the state space, enabling smoother value-function approximation and mitigating overestimation errors common in actor-critic methods. It uses intrinsic rewards derived from prediction error in the latent space to promote exploration of novel states. The intrinsic reward encourages the agent to prioritize uncertain yet informative regions, improving exploration efficiency under sparse extrinsic reward signals and accelerating convergence. Furthermore, training stability is achieved through regularization of the latent space via maximum mean discrepancy (MMD) loss. By enforcing consistent latent dynamics, the MMD constraint reduces variance in target value estimation and results in more stable policy updates. Experimental results in simulated ROS2/Gazebo environments demonstrate that the proposed framework outperforms standard TD3 and other improved TD3 variants. Our model achieves a 93.1% success rate and a low 6.8% collision rate, reflecting efficient and safe goal-directed navigation. These findings confirm that combining intrinsic motivation, structured representation learning, and regularization-based stabilization produces more robust and generalizable policies for mapless mobile robot navigation.

The challenge of sustainability in robotics is usually addressed in terms of materials, energy, and efficiency. Yet the long-term viability of robotic systems also depends on organizational interdependencies that shape how they are maintained, experienced, and integrated into human environments. The present article develops this systemic perspective by advancing the hypothesis that such interdependencies can be understood as self-organizing dynamics. To examine this hypothesis, we analyze the case of Sony's AIBO robotic dogs. Originally designed for social companionship, AIBO units gave rise to a hybrid socio-technical ecosystem in which owners, repair specialists, and ritual practices sustained the robots long after their commercial discontinuation. Building on self-organization theory, we introduce the concept of the "robosphere" as an evolving network of relations in which robotic and human agents co-constitute resilient, sustainability-oriented ecosystems. Extending self-organization beyond its classical biological and technical domains, we argue that robotic sustainability must be framed not as a narrow technical issue but as a complex, multifactorial, and distributed process grounded in organizational interdependencies that integrate technical, cognitive, social, and affective dimensions of human life. Our contribution is twofold. First, we propose a modeling perspective that interprets sustainability in robotics as an emergent property of these interdependencies, exemplified by repair, reuse, and ritual practices that prolonged AIBO's lifecycle. Second, we outline a set of systemic design principles to inform the development of future human-robot ecosystems. By situating the AIBO case within the robospheric framework, this Hypothesis and Theory article advances the view that hybrid socio-technical collectives can generate sustainability from within. It outlines a programmatic horizon for rethinking social robotics not as disposable products, but as integral nodes of co-evolving, sustainable human-robot ecologies.

When a passively compliant hand grasps an object, slip events are often accompanied by flexion or extension of the finger or finger joints. This paper investigates whether a combination of orientation change and slip-induced vibration at the fingertip, as sensed by an inertial measurement unit (IMU), can be used as a slip indicator. Using a tendon-driven hand, which achieves passive compliance through underactuation, we performed 195 manipulation trials involving both slip and non-slip conditions. We then labeled this data automatically using motion-tracking data, and trained a convolutional neural network (CNN) to detect the slip events. Our results show that slip can be successfully detected from IMU data, even in the presence of other disturbances. This remains the case when deploying the trained network on data from a different gripper performing a new manipulation task on a previously unseen object.

Robots that interact with humans are required to express emotions in ways that are appropriate to the context. While most prior research has focused primarily on basic emotions, real-life interactions demand more nuanced expressions. In this study, we extended the expressive capabilities of the android robot Nikola by implementing 63 facial expressions, covering not only complex emotions and physical conditions, but also differences in intensity. At Expo 2025 in Japan, more than 600 participants interacted with Nikola by describing situations in which they wanted the robot to perform facial expressions. The robot inferred emotions using a large language model and performed corresponding facial expressions. Questionnaire responses revealed that participants rated the robot's behavior as more appropriate and emotionally expressive when their instructions were abstract, compared to when they explicitly included emotions or physical states. This suggests that abstract instructions enhance perceived agency in the robot. We also investigated and discussed how impressions towards the robot varied depending on the expressions it performed and the personality traits of participants. This study contributes to the research field of human-robot interaction by demonstrating how adaptive facial expressions, in association with instruction styles, are linked to shaping human perceptions of social robots.