The Experts below are selected from a list of 3006 Experts worldwide ranked by ideXlab platform
Yael Hanein - One of the best experts on this subject based on the ideXlab platform.
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A Wearable High-Resolution Facial Electromyography for Long Term Recordings in Freely Behaving Humans
Scientific Reports, 2018Co-Authors: Lilah Inzelberg, David Rand, Stanislav Steinberg, Moshe David-pur, Yael HaneinAbstract:Human facial expressions are a complex capacity, carrying important psychological and neurological information. Facial expressions typically involve the co-activation of several muscles; they vary between individuals, between voluntary versus spontaneous expressions, and depend strongly on personal interpretation. Accordingly, while high-resolution Recording of muscle activation in a non-laboratory setting offers exciting opportunities, it remains a major challenge. This paper describes a wearable and non-invasive method for objective mapping of facial muscle activation and demonstrates its application in a natural setting. We focus on muscle activation associated with “enjoyment”, “social” and “masked” smiles; three categories with distinct social meanings. We use an innovative, dry, soft electrode array designed specifically for facial surface Electromyography Recording, a customized independent component analysis algorithm, and a short training procedure to achieve the desired mapping. First, identification of the orbicularis oculi and the levator labii superioris was demonstrated from voluntary expressions. Second, the zygomaticus major was identified from voluntary and spontaneous Duchenne and non-Duchenne smiles. Finally, using a wireless device in an unmodified work environment revealed expressions of diverse emotions in face-to-face interaction. Our high-resolution and crosstalk-free mapping, along with excellent user-convenience, opens new opportunities in gaming, virtual-reality, bio-feedback and objective psychological and neurological assessment.
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Temporary-tattoo for long-term high fidelity biopotential Recordings.
Scientific Reports, 2016Co-Authors: Lilach Bareket, David Rabinovich, Barak Brandes, Lilah Inzelberg, David Rand, Moshe David-pur, Yael HaneinAbstract:Electromyography is a non-invasive method widely used to map muscle activation. For decades, it was commonly accepted that dry metallic electrodes establish poor electrode-skin contact, making them impractical for skin Electromyography applications. Gelled electrodes are therefore the standard in Electromyography with their use confined, almost entirely, to laboratory settings. Here we present novel dry electrodes, exhibiting outstanding Electromyography Recording along with excellent user comfort. The electrodes were realized using screen-printing of carbon ink on a soft support. The conformity of the electrodes helps establish direct contact with the skin, making the use of a gel superfluous. Plasma polymerized 3,4-ethylenedioxythiophene was used to enhance the impedance of the electrodes. Cyclic voltammetry measurements revealed an increase in electrode capacitance by a factor of up to 100 in wet conditions. Impedance measurements show a reduction factor of 10 in electrode impedance on human skin. The suitability of the electrodes for long-term Electromyography Recordings from the hand and from the face is demonstrated. The presented electrodes are ideally-suited for many applications, such as brain-machine interfacing, muscle diagnostics, post-injury rehabilitation, and gaming.
Paolo Cavallari - One of the best experts on this subject based on the ideXlab platform.
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surface Electromyography Recording of spontaneous eyeblinks applications in neuroprosthetics
Otolaryngology-Head and Neck Surgery, 2013Co-Authors: Alice Frigerio, Stefano Brenna, Paolo CavallariAbstract:ObjectiveWe are designing an implantable neuroprosthesis for the treatment of unilateral facial paralysis. The envisioned biomimetic device paces artificial blinks in the paretic eyelid when activity in the healthy orbicularis oculi (orbicularis) muscle is detected. The present article focuses on Electromyography (EMG)–based eyeblink detection.Study DesignA pilot clinical study was performed in healthy volunteers who were intended to represent individuals with facial paralysis. Spontaneous eyeblinks were detected by a surface EMG Recording. Blink detection accuracy was tested at rest and during voluntary smiling and chewing.SettingFifteen participants were asked to wear surface Recording electrodes on the left side of their face, detecting the orbicularis oculi, the masseter, and the zygomatic muscle EMG activity.Subjects and MethodsParticipants were asked to look ahead, voluntarily smile, and chew according to an experimental protocol. Custom software was designed with the purpose of selectively filterin...
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surface Electromyography Recording of spontaneous eyeblinks applications in neuroprosthetics
Otolaryngology-Head and Neck Surgery, 2013Co-Authors: Alice Frigerio, Stefano Brenna, Paolo CavallariAbstract:ObjectiveWe are designing an implantable neuroprosthesis for the treatment of unilateral facial paralysis. The envisioned biomimetic device paces artificial blinks in the paretic eyelid when activi...
Lilah Inzelberg - One of the best experts on this subject based on the ideXlab platform.
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A Wearable High-Resolution Facial Electromyography for Long Term Recordings in Freely Behaving Humans
Scientific Reports, 2018Co-Authors: Lilah Inzelberg, David Rand, Stanislav Steinberg, Moshe David-pur, Yael HaneinAbstract:Human facial expressions are a complex capacity, carrying important psychological and neurological information. Facial expressions typically involve the co-activation of several muscles; they vary between individuals, between voluntary versus spontaneous expressions, and depend strongly on personal interpretation. Accordingly, while high-resolution Recording of muscle activation in a non-laboratory setting offers exciting opportunities, it remains a major challenge. This paper describes a wearable and non-invasive method for objective mapping of facial muscle activation and demonstrates its application in a natural setting. We focus on muscle activation associated with “enjoyment”, “social” and “masked” smiles; three categories with distinct social meanings. We use an innovative, dry, soft electrode array designed specifically for facial surface Electromyography Recording, a customized independent component analysis algorithm, and a short training procedure to achieve the desired mapping. First, identification of the orbicularis oculi and the levator labii superioris was demonstrated from voluntary expressions. Second, the zygomaticus major was identified from voluntary and spontaneous Duchenne and non-Duchenne smiles. Finally, using a wireless device in an unmodified work environment revealed expressions of diverse emotions in face-to-face interaction. Our high-resolution and crosstalk-free mapping, along with excellent user-convenience, opens new opportunities in gaming, virtual-reality, bio-feedback and objective psychological and neurological assessment.
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Temporary-tattoo for long-term high fidelity biopotential Recordings.
Scientific Reports, 2016Co-Authors: Lilach Bareket, David Rabinovich, Barak Brandes, Lilah Inzelberg, David Rand, Moshe David-pur, Yael HaneinAbstract:Electromyography is a non-invasive method widely used to map muscle activation. For decades, it was commonly accepted that dry metallic electrodes establish poor electrode-skin contact, making them impractical for skin Electromyography applications. Gelled electrodes are therefore the standard in Electromyography with their use confined, almost entirely, to laboratory settings. Here we present novel dry electrodes, exhibiting outstanding Electromyography Recording along with excellent user comfort. The electrodes were realized using screen-printing of carbon ink on a soft support. The conformity of the electrodes helps establish direct contact with the skin, making the use of a gel superfluous. Plasma polymerized 3,4-ethylenedioxythiophene was used to enhance the impedance of the electrodes. Cyclic voltammetry measurements revealed an increase in electrode capacitance by a factor of up to 100 in wet conditions. Impedance measurements show a reduction factor of 10 in electrode impedance on human skin. The suitability of the electrodes for long-term Electromyography Recordings from the hand and from the face is demonstrated. The presented electrodes are ideally-suited for many applications, such as brain-machine interfacing, muscle diagnostics, post-injury rehabilitation, and gaming.
Alice Frigerio - One of the best experts on this subject based on the ideXlab platform.
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surface Electromyography Recording of spontaneous eyeblinks applications in neuroprosthetics
Otolaryngology-Head and Neck Surgery, 2013Co-Authors: Alice Frigerio, Stefano Brenna, Paolo CavallariAbstract:ObjectiveWe are designing an implantable neuroprosthesis for the treatment of unilateral facial paralysis. The envisioned biomimetic device paces artificial blinks in the paretic eyelid when activity in the healthy orbicularis oculi (orbicularis) muscle is detected. The present article focuses on Electromyography (EMG)–based eyeblink detection.Study DesignA pilot clinical study was performed in healthy volunteers who were intended to represent individuals with facial paralysis. Spontaneous eyeblinks were detected by a surface EMG Recording. Blink detection accuracy was tested at rest and during voluntary smiling and chewing.SettingFifteen participants were asked to wear surface Recording electrodes on the left side of their face, detecting the orbicularis oculi, the masseter, and the zygomatic muscle EMG activity.Subjects and MethodsParticipants were asked to look ahead, voluntarily smile, and chew according to an experimental protocol. Custom software was designed with the purpose of selectively filterin...
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surface Electromyography Recording of spontaneous eyeblinks applications in neuroprosthetics
Otolaryngology-Head and Neck Surgery, 2013Co-Authors: Alice Frigerio, Stefano Brenna, Paolo CavallariAbstract:ObjectiveWe are designing an implantable neuroprosthesis for the treatment of unilateral facial paralysis. The envisioned biomimetic device paces artificial blinks in the paretic eyelid when activi...
Moshe David-pur - One of the best experts on this subject based on the ideXlab platform.
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A Wearable High-Resolution Facial Electromyography for Long Term Recordings in Freely Behaving Humans
Scientific Reports, 2018Co-Authors: Lilah Inzelberg, David Rand, Stanislav Steinberg, Moshe David-pur, Yael HaneinAbstract:Human facial expressions are a complex capacity, carrying important psychological and neurological information. Facial expressions typically involve the co-activation of several muscles; they vary between individuals, between voluntary versus spontaneous expressions, and depend strongly on personal interpretation. Accordingly, while high-resolution Recording of muscle activation in a non-laboratory setting offers exciting opportunities, it remains a major challenge. This paper describes a wearable and non-invasive method for objective mapping of facial muscle activation and demonstrates its application in a natural setting. We focus on muscle activation associated with “enjoyment”, “social” and “masked” smiles; three categories with distinct social meanings. We use an innovative, dry, soft electrode array designed specifically for facial surface Electromyography Recording, a customized independent component analysis algorithm, and a short training procedure to achieve the desired mapping. First, identification of the orbicularis oculi and the levator labii superioris was demonstrated from voluntary expressions. Second, the zygomaticus major was identified from voluntary and spontaneous Duchenne and non-Duchenne smiles. Finally, using a wireless device in an unmodified work environment revealed expressions of diverse emotions in face-to-face interaction. Our high-resolution and crosstalk-free mapping, along with excellent user-convenience, opens new opportunities in gaming, virtual-reality, bio-feedback and objective psychological and neurological assessment.
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Temporary-tattoo for long-term high fidelity biopotential Recordings.
Scientific Reports, 2016Co-Authors: Lilach Bareket, David Rabinovich, Barak Brandes, Lilah Inzelberg, David Rand, Moshe David-pur, Yael HaneinAbstract:Electromyography is a non-invasive method widely used to map muscle activation. For decades, it was commonly accepted that dry metallic electrodes establish poor electrode-skin contact, making them impractical for skin Electromyography applications. Gelled electrodes are therefore the standard in Electromyography with their use confined, almost entirely, to laboratory settings. Here we present novel dry electrodes, exhibiting outstanding Electromyography Recording along with excellent user comfort. The electrodes were realized using screen-printing of carbon ink on a soft support. The conformity of the electrodes helps establish direct contact with the skin, making the use of a gel superfluous. Plasma polymerized 3,4-ethylenedioxythiophene was used to enhance the impedance of the electrodes. Cyclic voltammetry measurements revealed an increase in electrode capacitance by a factor of up to 100 in wet conditions. Impedance measurements show a reduction factor of 10 in electrode impedance on human skin. The suitability of the electrodes for long-term Electromyography Recordings from the hand and from the face is demonstrated. The presented electrodes are ideally-suited for many applications, such as brain-machine interfacing, muscle diagnostics, post-injury rehabilitation, and gaming.