processed for feature extraction
Three methods are compared
To widen the scope of decision-making and include other activities for different age groups.
A deep parallel neural network uses two channels:
Simulation experiments show that:
The Review Stages.
AI is one of the most significant technological developments, increasing in popularity and being used in all application areas. One of the most important of these applications is the use of AI in healthcare. Health is the most important human factor for life on this planet. Recently, the use and applications of AI in healthcare have played a significant role in helping doctors discover diseases and improve human health. The use of AI in health depends on the appearance of some symptoms on parts of the body. These symptoms affect and are reflected in the movements and expressions of the body, which are manifested as body language. From this point, these features of body language can be used to classify disease symptoms by detecting them in ML. In this section, we want to explain the importance of using body language by artificial intelligence. There are features that appear in body language that AI can analyze to solve many problems in many applications. For example, facial expressions can be analyzed to know human feelings and benefit from them in psychotherapy or examine subjects’ emotions in the study. Another example is analyzing the movements of the hand, shoulder, or leg, and using them to discover valuable features in medicine, security, etc. From this point, we want to show that body language has many benefits and applications, so this is important. Therefore, we want to suggest that body language can also be used to detect infectious diseases such as COVID-19 using ML.
Now, it is feasible to employ this technology in healthcare systems. Pandemic and epidemic diseases are considered an intractable matter that inferiorly affects human health, regarded as peoples’ most valuable asset. Additionally, the biggest worry is that new pandemics or epidemics will suddenly appear and become deadly, such as COVID-19, which has claimed nearly a million lives so far. This stimulates us to develop AI technologies to help detect the disease’s external symptoms by analyzing the patients’ body language. This work deals with general studies that prove the importance of body language processing in various fields.
Every computer user interacts with the device via mouse and keyboard. Currently, researchers are developing a computer system for interaction and response through body language such as hand gestures and movement. In [ 8 ], a comprehensive survey was completed evaluating the published literature recommending the visual interpretation of hand gestures when interacting with computing devices and introducing more advanced methods to analyze body language rather than mouse and keyboard movements. The study of [ 9 ] considered the problem of robot accuracy recognition. It proposed a fusion system to identify the fall movement types and abnormal directions with an accuracy rate of 99.37%. A facial coding system was developed in [ 10 ] to measure and analyze facial muscle movements and identify facial expressions. A database was created with a series of 1100 images. The system analyzed and classified facial creases and wrinkles to match their movements. The results showed that the performance improved, reaching 92%. Combining facial features and movements with body movements is essential for analyzing individual expressions. Three different experiments were conducted to determine whether facial expressions and body language should be combined and concluded in the affirmative. Another study [ 11 ] focused on deep learning techniques to identify emotions revealed in facial expressions. This research used pure convolutional neural network techniques to prove that deep learning using these neural networks successfully recognizes emotions by developing cognition, significantly improving the usability. A new model was invented in [ 12 ] that detected body gestures and movements with a pair of digital video images, which supplied a set of vector monitors with three dimensions.
The first study showed the relationship between the contraction of the internal muscles of the face and the facial movements as established by Hjortsjo 1970 [ 13 ] to develop a coding system by identifying the minor units of facial muscle movements and then drawing coordinates that defined the facial expressions. The recognition of people’s emotions has merited much attention. However, the issue of detecting facial emotions and expressions of speech, especially among researchers, is still problematic. The work presented in [ 14 ] offered a comprehensive survey to facilitate further research in this field. It focused on identifying gender-specific characteristics, setting an automatic framework to determine the physical manifestation of emotions, and identifying constant and dynamic body shape comments. It also examined recent studies on learning and emotion by identifying gestures through photos or video. Several methods combined speech, body, and facial gestures were also discussed to identify optimized emotions. The study concluded that the knowledge of a person’s feelings through overtones was still incomplete.
A coding system was created to classify the facial expressions by analyzing more than 1100 pictures at work [ 10 ]. Three ways to classify facial expressions were compared: a method for analyzing image components in the gray field, measuring wrinkles, and a template for creating facial movements. The accuracy of performance of the coding system for the three roads was 89%, 57%, and 85%, respectively, while when assembling the methods, the performance accuracy reached 92%. Online learning is challenged by knowing students’ participation in learning processes. In work [ 15 ], an algorithm is introduced to learn about student interactions and see their problems. In this algorithm, two methods were used to collect evidence of student participation: the first method involved collecting facial expressions using a camera, and the second involved collecting hand movement data using mouse movements. The data were trained by building two groups; one group collected facial data with mouse data, and the second was without the mouse. It was discovered that the first group’s performance was better than the second group’s by 94.60% compared to 91.51%. Work [ 14 ] commented on recognizing facial and speech gestures that may provide a comprehensive survey of body language. It provided a framework for the automatic identification of dynamic and fixed emotional body gestures that combined facial and speech gestures to improve recognition of a person’s emotions. Paper [ 16 ] defines facial expressions by matching them with body positions. The work demonstrated that the effects and expressions are more evident when the major irritations on the face are similar to those highlighted in the body. However, the model produces different results according to the dependence on the properties, whether physical, dimensional, or latent. Another significant finding in the study is that expressions of fear bloom better when paired with facial expressions than when performing tasks.
In [ 17 ], the authors stated that the medical advisor must exhibit exciting communication qualities that make the patient feel comfortable making a correct decision. They advised doctors to know how to use facial expressions, eyes, hand gestures, and other body expressions. It was mentioned that a smile is the most robust expression that a doctor can use to communicate with their patients, as the doctor’s smile makes the patient feel comfortable. The patient’s sense of comfort makes them appear confident, and they answer the doctor’s questions with clear responses, credibility, and confidence. In addition, communicating with the eyes is very important to help the patient, as the lack of this from the doctor may suggest that the doctor does not care about them. The research in [ 18 ] concludes that the doctor’s appropriate nonverbal communication positively impacts the patient. Objective evidence has shown that the patient improves and recovers better and faster when the doctor uses a smile and direct eye communication with the patient compared to those who do not use a smile and direct eye with the patient. It was also concluded that patients who receive more attention, feeling, sensation, and participation by the doctor respond better to treatment, as the tone of voice, movement of the face and body, and eye gaze affect the patient. Clint [ 19 ] reported his first day on the job in the intensive care unit. He felt fear and anxiety on that day as the unit was comprehensive and informative. Clint was asking himself, “is it worth working in that unit?” He had a patient with her sister next to her. The patient glimpsed Clint’s nervousness and anxiety but did not dare ask him, so she whispered that the nurse was nervous to her sister. Then, her sister asked Clint, “you are worried and anxious today; why?” What is there to be so nervous about? Clint thought to hide his nervousness and anxiety and restore confidence; he smiled and replied, “I am not nervous.” However, sometimes, we have to ask our patients ridiculous questions that make us tense. Here, Clint states that he noticed from the patient’s looks that he could not persuade her to hide his stress. Clint made it clear that patients are affected by their body language and facial expressions. They can know their cases through their body language. From here, Clint realized that he was wrong. As anxiety and stress began on his patient, his condition may increase for that reason.
In one of Henry’s articles [ 20 ], he wrote that treating a patient with behaviors and body language has a more significant impact than using drugs. The work [ 21 ] concluded that non-verbal language between a doctor and their patient plays a vital role in treating the patient. The doctor can use non-verbal signals sent from the patient to collect information about the condition of the disease to help them decide on diagnosis and treatment. The research summarized that the non-verbal technique used by the doctor toward the patient affects them in obtaining information and helping them recover from the disease. For example, eye gaze, closeness to the patient, and facial and hand gestures to appear relaxed. The research suggests that there is a positive effect on the use of non-verbal cues on the patient. It is recommended that doctors be trained in incorporating non-verbal cues as a significant way of dealing with patients to speed up their treatment.
Different AI methods and techniques have been used to analyze patients’ body language. We briefly discuss some studies conducted so far in this area. More specifically, focusing on facial recognition, a pimple system was introduced in [ 22 ] to analyze facial muscles and thus identify different emotions. The proposed system automatically tracks faces using video and extracts geometric shapes for facial features. The study was conducted on eight patients with schizophrenia, and the study collected dynamical information on facial muscle movements. This study showed the possibility of identifying engineering measurements for individual faces and determining their exact differences for recognition purposes. Three methods were used in [ 23 ] to measure facial expressions to define emotions and identify persons with mental illness. The study’s proposed facial action coding system enabled the interpretation of emotional facial expressions and thus contributed to the knowledge of therapeutic intervention for patients with mental illnesses.
Many people suffer from an imbalance in the nervous system, which leads to paralysis of the patient’s movement and falls without prior warning. The study [ 24 ] was targeted to improve early warning signs detection and identification rate using a platform (R). Wireless sensor devices were placed on the chest and waist. The collected data were converted to an algorithm for analysis that extracted them and activated if there was a risk. The results showed that the patient at risk engaged in specific typical movements, which indicated an imminent fall. The authors further suggested applying this algorithm to patients with seizures to warn of an imminent attack and alert the emergency services.
In research [ 25 ], a computational framework was designed to monitor the movements of older adults to signal organ failures and other sudden drops in vital body functions. The system monitored the patient’s activity and determined its level using sensors placed on different body parts. The experiments show that this system identifies the correct locations in real-time with an accuracy of 95.8%. Another approach based on data analysis was presented in [ 26 ] for an intelligent home using sensors to monitor its residents’ movements and behaviors. This system helps detect behaviors and forecast diseases or injuries that residents may experience, especially older people. This study is helpful for doctors in providing remote care and monitoring their patients’ progress. The target object capture setup model proposed in [ 27 ] is based on the candidate region–suggestion network to detect the position grab of the manipulator combined with information for color and deep image capture using deep learning. It achieved a 94.3% crawl detection success rate on multiple target detection datasets through merging information for a color image. A paper [ 28 ] under review deals with the elderly and their struggle to continue living independently without relying on the support of others—the research project aimed to compare automated learning algorithms used to monitor their body functions and movements. Among the eight higher education algorithms studied, the support conveyor algorithm achieved the highest accuracy rate of 95%, using reference traits. Some jobs require prolonged sitting, resulting in long-term spinal injury and nervous disease. Some surveys helped design sitting position monitoring systems (SPMS) to assess the position of the seated person using sensors attached to the chair. The drawback of the proposed method was that it required too many sensors. This problem was resolved by [ 29 ], who designed an SPMS system that only needed four such sensors. This improved system defined six different sitting positions through several machine-learning algorithms applied to average body weight measurements. The positions were then analyzed and classified into any approach that would produce the highest level of accuracy, reaching from 97.20% to 97.94%. In most hospitals, medical doctors face anxiety about treating patients with mental illness regarding potential bodily harm, staff risks, and hospital tool damage. The study [ 30 ] devised a method to analyze the patient’s movements and identify the risk of harmful behavior by extracting visual data monitoring the patient’s movements from cameras installed in their rooms. The proposed method traced the movement points, accumulated them, and extracted their properties. The characteristics of the movement points were analyzed according to spacing, position, and speed. The study concluded that the proposed method could be used to explore features and characteristics for other purposes, such as analyzing the quality of the disease and determining its level of progression. In the study [ 31 ], wireless intelligent sensor applications and devices were designed to care for patient health, provide better patient monitoring, and facilitate disease diagnosis. Wireless sensors were installed on the body to periodically monitor the patient’s health, update the information, and send it to the service center. The researchers investigated the multi-level decision system (MDS) to monitor patient behaviors and match them with the stored historical data. This information allowed the decision makers in the medical centers to give treatment recommendations. The proposed system could also record new cases, store new disease data, and reduce the doctors’ effort and time spent examining the patients. The results proved accurate and reliable (MDS) in predicting and monitoring patients.
The study of [ 32 ] proposed the Short Time Fourier Transform application to monitor the patient’s movements and voice through sensors and microphones. The system transmitted sound and accelerometer data, analyzed the data to identify the patient’s conditions, and achieved high accuracy. Three experiments were conducted in reference [ 33 ], which involve the recognition of full-body expressions. The first experiment was about matching body expressions to incorporate all emotions, where fear was the most difficult emotion to express. At the same time, the second experiment focused on facial expressions strongly influenced by physical expression and, as a result, was ambiguous. In the last experiment, attention was given to expressions of the tone of a voice to identify emotional feelings related to the body. Finally, it was concluded that it was essential to pool the results of the three experiments to reveal true body expression.
A valuable study was conducted at the MIT Institute [ 34 ] to develop a system that detects pain in patients by analyzing data on brain activities using a wearable device to scan brain nerves. This was shown to help diagnose and treat patients with loss of consciousness and sense of touch. In this research, researchers use several fNIRS sensors specifically on the patient’s front to measure the activity of the frontal lobe, where the researchers developed ML models to determine the levels of oxygenated hemoglobin related to pain. The results showed that pain was detected with an accuracy of 87%.
The study [ 35 ] considered the heartbeat as a type of body language. Checking a patient’s heartbeat constitutes a crucial medical examination tool. The researcher suggested a one-dimensional (1D) convolutional neural network model CNN, which classified the vibrational signals of the regular and irregular heartbeats through an electrocardiogram. The model used the de-noising auto-encoder (DAE) algorithm, and the results showed that the proposed model classified the sound signals of the heart with an accuracy of up to 99%.
We can conclude from this study that reading and understanding body language through AI will help automatically detect epidemic diseases. Counting epidemic patients is a significant obstacle to detecting every infected person. The most prominent example that is evident now is COVID-19 sufferers. All the developed, middle, and developing countries of the world have faced a significant problem examining the disease due to many infected people and the rapid spread. Thus, infections increased significantly, making it difficult to catch up to detect. We suggest conducting a study to determine the movements and gestures of the body with epidemic diseases, such as those with COVID-19. Indeed, the epidemic disease will have unique and distinct movements in some body parts. The thermal camera to detect high body temperature certainly plays a significant role in indicating a patient with a disease. Still, it is difficult to determine what kind of disease is affected, and secondly, there may be a patient with epidemic disease, but their temperature may not have significantly increased. Thirdly, it may be revealed that the high temperature of an epidemic may be delayed, and the patient is in a critical stage of treatment. We focus in this study on the interest in studying the body language of some epidemics, especially COVID-19, which changed our lives for the worse. We have learned a harsh lesson from this deadly enemy: not to stand still. We must help our people, countries, and the world defend and attack this disease. Hence, we propose studying the use of body language using AI. We hope to collect and identify body parts’ gestures that characterize the epidemic in the upcoming studies on which we are currently working.
Table 1 indicates some studies that have used ML to discover disease and symptoms through gestures, hands, and facial expressions. This table concludes that the CNN algorithms are the most common and efficient methods of identifying disease symptoms through facial expressions and hand gestures. Some studies indicate that analyzing other body parts is also helpful in identifying some types of diseases using different ML algorithms, such as SVM and LSTM. It appears to us here that combining the proposed CNN algorithm with a new proposed algorithm to determine facial expressions will lead to high-quality results for detecting some epidemic diseases. It is essential first to study the symptoms that characterize the epidemic disease and their reflection on body expressions and then use the algorithm to learn the machine that has a higher efficiency in identifying these expressions.
The studies in Table 1 are classified as follows:
This study aims to survey research using ML algorithms to identify body features, movements, and expressions. Each movement is affected by the disease, and each disease is characterized by a distinct and different effect on the body. This means some body parts will undergo certain changes that point to a specific disease. Thus, we propose that ML algorithms capture images of body movements and expressions, analyze them, and identify diseases. This study surveyed a selection of existing studies that use different ML algorithms to detect body movements and expressions. Since these studies do not discuss this epidemiology method, this study seeks to document the use of ML algorithms in discovering epidemics such as COVID-19. Our survey analysis concludes that the results achieved indicate the possibility of identifying the body movements and expressions and that ML and convolutional neural networks are the most proficient in determining body language.
From an epidemiological, diagnostic, and pharmacological standpoint, AI has yet to play a substantial part in the fight against coronavirus. Its application is limited by a shortage of data, outlier data, and an abundance of noise. It is vital to create unbiased time series data for AI training. While the expanding number of worldwide activities in this area is promising, more diagnostic testing is required, not just for supplying training data for AI models but also for better controlling the epidemic and lowering the cost of human lives and economic harm. Clearly, data are crucial in determining if AI can be used to combat future diseases and pandemics. As [ 91 ] previously stated, the risk is that public health reasons will override data privacy concerns. Long after the epidemic has passed, governments may choose to continue the unparalleled surveillance of their population. As a result, worries regarding data privacy are reasonable.
According to patient surveys, communication is one of the most crucial skills a physician should have. However, communication encompasses more than just what is spoken. From the time a patient first visits a physician, their nonverbal communication, or “body language”, determines the course of therapy. Bodily language encompasses all nonverbal forms of communication, including posture, facial expression, and body movements. Being aware of such habits can help doctors get more access to their patients. Patient involvement, compliance, and the result can all be influenced by effective nonverbal communication.
Pandemic and epidemic illnesses are a worldwide threat that might kill millions. Doctors have limited abilities to recognize and treat victims. Human and technological resources are still in short supply regarding epidemic and pandemic conditions. To better the treatment process and when the patient cannot travel to the treatment location, remote diagnosis is necessary, and the patient’s status should be automatically examined. Altering facial wrinkles, movements of the eyes and eyebrows, some protrusion of the nose, changing the lips, and the appearance of certain motions of the hands, shoulders, chest, head, and other areas of the body are all characteristics of pandemic and epidemic illnesses. AI technology has shown promise in understanding these motions and cues in some cases. As a result, the concept of allocating body language to identifying epidemic diseases in patients early, treating them before, and assisting doctors in recognizing them arose owing to the speed with which they spread and people died. It should be emphasized that the COVID-19 disease, which horrified the entire world and revolutionized the world’s life, was the significant and crucial motivator for the idea of this study after we studied the body language analysis research in healthcare and defined the automatic recognition frame using AI to recognize various body language elements.
As researchers in information technology and computer science, we must contribute to discussing an automatic gesture recognition model that helps better identify the external symptoms of epidemic and pandemic diseases to help humanity.
First author’s research has been supported by Grant RMCG20-023-0023, Malaysia International Islamic University, and the second author’s work has been endorsed by the United Arab Emirates University Start-Up Grant 31T137.
This research was funded by Grant RMCG20-023-0023, Malaysia International Islamic University, and United Arab Emirates University Start-Up Grant 31T137.
Conceptualization, R.A. and S.T.; methodology, R.A.; software, R.A.; validation, R.A. and S.T.; formal analysis, R.A.; investigation, M.A.H.A.; resources, M.A.H.A.; data curation, R.A.; writing—original draft preparation, R.A.; writing—review and editing, S.T.; visualization, M.A.H.A.; supervision, R.A. and S.T.; project administration, R.A. and S.T.; funding acquisition, R.A. and S.T. All authors have read and agreed to the published version of the manuscript.
Informed consent statement, data availability statement, conflicts of interest.
The authors declare no conflict of interest.
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Media Files: APA Sample Student Paper , APA Sample Professional Paper This resource is enhanced by Acrobat PDF files. Download the free Acrobat Reader. Note: The APA Publication Manual, 7 th Edition specifies different formatting conventions for student and professional papers (i.e., papers written for credit in a course and papers intended for scholarly publication).
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