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Introduction: To date, all augmented reality devices have provided an environment to interact with the real world, which is computer-generated sensory information. In contrast, the EmotiGlass project explores ways to modulate user perceptions with computers.

Some people say that hardware technology will soon reach its limit, and in our view, hardware innovation, especially the innovation of Chinese hardware engineers, is far from coming to an end, but just started. As a platform dedicated to providing technology sharing services to global hardware developers, Hackaday, the largest global hardware developer community of non-net parent company SupplyFrame. Com has held the global hardware developer contest Hackadayprize for three consecutive years, with more than 3,000 hardware teams interacting and learning skills in this event.

This "Hardware Change World" series, we select the outstanding works that have won awards in the previous Hardadayprize competitions, the hardware technology can be more interesting, the hardware developers can be more creative, from these works you can see.

In March 2019, the Hackadayprize China event will be grandly opened. We are looking forward to seeing domestic hardware developers open their minds and show their skills. Are you ready, with the same hardware developers from all over the world PK?

To date, all augmented reality devices have provided an environment to interact with the real world, which is computer-generated perceptual information. In contrast, the EmotiGlass project explores ways to modulate user perceptions with computers. Our project aims to develop the first "Emotional Reality" device. EmotiGlass opens up new applications in the augmented reality world where emotional bias can be manipulated by computer applications. In addition, EmotiGlass has therapeutic applications that help patients control stress and anxiety.

Background

When you suddenly saw a dog, are you happy or scared? Do you feel comfortable when you have people of other races around you? We generally believe that the emotions caused by events around us depend on our prejudice and previous experience. Indeed, but when it comes to understanding how our brains associate emotional content with our perception, except for what the eye seesThere are still many things.

We developed an implantable cardiac medical device. A few months ago, we found a journal article that evoked our curiosity. In this paper, researchers from the University of London and their colleagues have shown that images presented at different times of the heart cycle can cause changes in the way the subject perceives the image emotionally.

The report states that racial prejudice can be significantly adjusted by changing the time at which images are presented. In this study, individual pictures of dark or light-colored skin holding various objects appear to be consistent with cardiac contraction or relaxation. The results show that if the image appears during systole, the subject apparently mistakenly identifies the harmless object as a weapon when grasped by a dark-skinned hand. very good!

A team from the University of London conducted a related study in which they found that sensory processing depends on the stimulation time associated with heartbeat time. In particular, the perception of pain - strongly biased by emotions - depends on when harmful stimuli are transmitted to the subject during the cardiac cycle.

The mechanism behind these effects seems to be that the stimulus causes emotional arousal, depending on the brain's signal received from the body's internal blood pressure sensor (pressure sensor). Simply calculating the stimulation delivery for the cardiac cycle can change the way the brain processes the stimulus.

The time component of the stimulus can not only change the emotions it causes, but also the spatial components have a significant impact on the emotional perception of the visual scene. In his exciting book "Two Thoughts: The Revolution in Science and Technology of Double Brain Psychology", Dr. Fredler Schiffer, a psychiatrist and professor at the Harvard Medical School's Psychiatry and at McLean Hospital, said that by selectively blocking the field of vision into the brain A hemisphere approach can trigger very obvious emotions.

Temporal and spatial changes in visual scenes can also cause profound changes in emotional responses. EMDR (eye movement desensitization and reprocessing) is a known psychotherapy technique in which causing lateral eye movement is thought to unlock a memory mechanism that can be used to reprocess traumatic events. Outside the external treatment environment, a slight scan of the field of vision seems to reduce the emotional impact of the painful event.

The goal of the EmotiGlass project is to develop a pair of active glasses that can be controlled with appropriate timing or spatial distribution.Selectively obscures vision to allow the computer to adjust the user's emotional perception of reality. Unlike augmented reality devices that restrict themselves to augmented reality through computer-generated content, our goal is to develop the first device that allows a computer to modulate actual emotional content. (Editor feels: This function is terrible, first of all, the function of the glasses itself, only the modulation of emotions, if realized, the "feelless" shortcomings of artificial intelligence robots can make up for it, if it is highly simulated, humans still have Is it necessary?)

Figure 1: Conceptual view of EmotiGlass

Figure 2: Conceptual block diagram of EmotiGlass

Figure 1 shows a conceptual diagram of the EmotiGlass goggles, Figure 2 shows the possible module framework. This concept requires a spectacle frame with multi-pixel shutters that can be selectively controlled by an on-chip microcontroller to selectively occlude the visual range while the cardiac cycle is detected by the photo-film sensor or ECG channel. The actual emotional potency can be adjusted by the computer or by the user through the user interface. For convenience, the glasses include all real-time electronic devices, and the operating mode control can be achieved via a BLE wireless connection.

The therapeutic application of EmotiGlass can obviously help control stress and anxiety. However, EmotiGlass has opened up new applications in the field of augmented reality. For example, the emotional bias of the police and other first-aiders can be suppressed to reduce unnecessary use of force. On the other hand, increased emotional awakening can be used for entertainment applications, enhancing the plot effects of movies and games.

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