A new Artificial Intelligence (AI) approach to translate brain waves into speech

Akbari et al. Towards reconstructing intelligible speech from the human auditory cortex. Scientific Reports January, 2019.

In a recent study, researchers demonstrated that brain signals from the human auditory cortex can be reconstructed into intelligible speech with a high rate of success. In the study, the brain signals from the auditory cortexes of five participants (suffering from epilepsy) were recorded while they were listening to stories and numbers being read. Researchers specifically chose epilepsy patients as they were already undergoing a clinical procedure involving the placement of electrodes into the temporal lobe of their brains. This procedure is called invasive electrocorticography. The researchers then spoke 10 numbers into the ears of the test subjects: zero to nine. Each number produced a unique response in the brain. The sound produced by the vocoder in response to those brain signals was analyzed and cleaned up by neural networks, a type of artificial intelligence that mimics the structure of neurons in the biological brain. Remarkably, the robotic translations were successfully understood by 75% of people enlisted to test the technology. These results suggest a hopeful future for the Brain-Computer Interface. In particular, this new technology has great potential at giving a voice to people who are paralyzed or severely injured. Despite the potential, the path for a practical device is still long. To go beyond simple numbers and access the thoughts that go with speaking, the researchers will have to probe a different part of the brain known as the Broca area. It is found in the frontal lobe and linked to speech production and language processing.

Milky Way is warped and twisted, not flat

Chen, et al. An intuitive 3D map of the Galactic warp’s precession traced by classical Cepheids. Nature Astronomy February, 2019.

Astronomers have been studying the Earth’s home galaxy, the Milky Way, for centuries in efforts to get a better understanding of its size, structure, and place in the universe. While modern instruments have provided invaluable details about our galaxy and others, a truly accurate model of our galaxy has been missing. Researchers have recently built, for the first time, an accurate 3D map of the Milky Way. We often think of spiral galaxies as a flat thin disk of stars that orbit around a central region, where billions of stars provide the massive gravitational force to hold everything together. However, a new study showed that the Milky Way’s gas disk is no longer confined to a thin plane, but is instead organized in an S-like, warped appearance. The researchers determined the Milky Way’s exact shape at high accuracy by measuring the distances to so-called Cepheid variable stars. Cepheids are young stars that can be up to 20 times as massive and 100,000 times as bright as our Sun. These high stellar masses live fast and die young, sometimes after only a few million years. They also show day-to month-long pulsations, which are observed as changes in their brightness. Combined with a Cepheid’s observed brightness, its pulsation period can be used to obtain highly reliable distances.  By using the data of 1,339 Cepheid stars as benchmarks, researchers were able to map out accurate distances between objects in the Milky Way. Interestingly, in the Milky Way’s outer regions, they found that the S-like stellar disk is warped in a progressively twisted spiral pattern. Researchers suggested that the Milky Way’s warped spiral pattern is most likely caused as a result of rotational forcing or “torques” by the massive inner disk. The further stars are from the center of the galaxy, the weaker their gravitational pull is. This new morphology is expected to provide a crucial updated map of our galaxy’s stellar motions and the origins of the Milky Way’s galaxy.

Smart fabric self-cools or self-insulates depending on conditions

Zhang et al. Dynamic gating of infrared radiation in a textile. Science, February 2019

Decades of innovation in fabrics have yielded high-tech materials that react to hot and cold conditions, allowing them to keep marathon runners cool or alpine hikers warm. However, there was never a material that could change the insulating properties of fabric in response to the environment. A recently developed fabric is the first to automatically warm wearers up or cool them down as needed. Infrared radiation is the primary way the body releases heat and is the focus of this new technology. When the condition is warm or moist, like when a body sweats, the fabric allows the infrared radiations to pass through. Conversely, in cool and dry conditions, the fabric traps the surrounding heat that escapes. The fibers are made of two different synthetic materials coated in carbon nanotubes – one absorbs water, and the other repels it. When the material gets hot and wet during sweating, the strands twist and warp. This distortion brings the strands of yarn closer together, which opens the pores in the fabric to allow heat to escape. When a wearer is too cool, this mechanism is blocked, trapping heat close to the skin. The reaction takes place almost instantly. The garment cools people down before they realize that they are getting hot. Athletes perhaps will be the first people to wear clothes made from the material, but it could be useful for infants, people with disabilities, and the elderly. Researchers say it could be in production within months as the base material is easily available and the carbon coating can be effortlessly added during the standard dying process.

Nursi says that people are “connected with almost all beings” and because of this “a boundless capacity to love [these things] has been included in [our] nature[s].” However, even though individuals have the freedom to love transient things, these finite objects cannot fulfill them in the same way as the Enduring One (al-Baqi) can. What most people do not realize is that they “constantly suffer the pain of separation” because their infinite capacity for love, which has been given to them by God, is not fulfilled by things of this world. Like Rumi’s reed-flute, people yearn for a return to their reed-bed. By “misusing [their love] and spending it on transitory beings, [people have] done wrong and suffer the punishment for [this] fault through the pain of separation.” Individuals do not need to live in the state of suffering, however, and Nursi’s Third Flash offers them a way to transcend it.

The first part of the Sufi phrase calls people to sever that desire give one’s love to the finite things of this world. True, “the shadows of the shadows of the manifestation of His Most Beautiful Names” are beautiful and able to be loved in this world, but they themselves are not God and are not fit for the love that only God deserves. When people love only things of this world, they suffer; when they focus their love on the Enduring One (al-Baqi) they are brought closer to God and are fulfilled in ways not of this world. When they sever their ties to finite love, they open themselves to a Higher Love, an Infinite Love. The purpose of the first part of the Sufi phrase is to comfort people with knowledge of an Ever Enduring Love, and remind them that the love of this world pales in comparison to God’s everlasting love.

The second part of the Sufi phrase not only heals people’s spiritual wounds, but also acts to satisfy “the intense wish for immortality in [their] natures[s].” Nursi says that people long for immortality, because God is immortal and “the matter most important to [people], [their] most pressing duty is to form a relation with the Enduring One,” who is immortal. By placing their love in the finite, in loving only things of this world, people are limiting their capacities for Eternal Love and as a result they suffer. The only fulfilling love is love for the al-Baqi, the Enduring One, the Immortal and Undying Love of God. Once human beings separate themselves from the love of this world, as the first part of the Sufi phrase directs, people can then be healed by the knowledge that God is the Enduring One, and God’s love will never fade away.

Nursi insists that it is not only possible, but preferable, to live a life of infinite love in the present moment. To explain this point, he uses the illustration of the hands of a clock:

Just as the hands of a clock counting the seconds, and those counting the minutes, hours, and days superficially resemble each other, but differ in respect to speed, so too the spheres of the body, soul, heart, and spirit in man differ from each other.

Nursi says that the spiritual nature of humans is not bound by time. Yes, the physical existence of people’s pasts are extinct, and their futures not yet existent, but the present moment in which they live, in the minutes and hours that they live for the Love of God, they are immortal-“Yes, one second on the way of love, knowledge, and pleasure of the Truly Enduring One is a year.” Although it may often seem that “time flies when we are having fun,” in reality a “moment’s union for God’s sake within the bounds of the Enduring One of Glory’s pleasure is a window of union, not only for a [moment], but [permanently].” Speaking of the human perception of time and place, Nursi seems to anticipate Albert Einstein’s theory of relativity-“The broad Earth with enemies is like a drinking-glass, while the eye of a needle with friends is like a broad arena.” Understanding this imagery, a moment in God’s love can be an eternity of pleasure and fulfillment, and a moment without God’s love can seem like an eternity of suffering. It is because of this that Nursi, and the multitudes of Muslims before him and since, have prayed the five prescribed daily prayers to God. Through prayer Muslims are linked to God and are reminded of God’s Enduring Love; and through remembrance of the Enduring Love of God the transitory becomes eternal (baqi).

Sufi tradition also gives two other images for this enduring love: that of the fabric of life, and that of the “conveyor belt.” For the first image, life is seen as fabric. If during one’s life a person does nothing of merit, nothing of love for God, then the fabric remains plain, unbeautiful, and transient. If one does bad things and denies God’s love, the fabric becomes dirty and tattered and the fabric suffers. However, if one does what is beautiful and one remembers the Enduring One, flowers are embroidered on the fabric and these flowers last through all eternity, sustained by God’s Infinite Love. Likewise, the image of the conveyor belt symbolizes the transience of this world-for every deed done in this life, something goes on to the next. If one does nothing beautiful, nothing for God, then nothing is placed on the conveyor belt and nothing goes into the next life. If one does bad things or good things in this life, then these things go on into the next life, not to be seen again until death. One day, the conveyor belt stops and at that moment there is nothing left that one can do.

Similar to the Catholic Jesuit notion of Ad Meiorem Dei Gloriam (that is, living for the Greater Glory of God), Nursi’s reflections on the work of humans for God alludes to how spiritually profitable a life devoted to God can be:

Serve for the sake of God, meet with others for the sake of God, work for the sake of God; make all of your actions ‘in God, for God, and to God,’ then, all the moments of your life will become like years.

When working for the sake of God, when loving people for the sake of God, when living life for God;, a moment is like a year. Just as in our dreams a day can seem like a year, a life dedicated to and in love with God can feel like an eternity-in fact, a moment with God is an eternity, a glimpse of the Enduring Love of God.

This Sufi phrase of al-Baqi, which is formed under the name of God, ‘al-Baqi,’ calls people to cut ties with the finite love that this world offers. It also comforts human beings by reminding them that only God’s infinite love can bring us healing, fulfillment, and an everlasting union. In his Third Flash, Nursi eloquently affirms that within the Love of God there is the promise of an Enduring Love, a love that cannot be found in the worldly shadows alone.

Michael David Graskemper is a graduate student at John Carroll University, Department of Religious Studies

Reference

Nursi, Bediuzzaman Said, The Flashes Collection, Sozler Nesriyat, Istanbul: 1995, pp 29, 30.