Gerontechnology : international journal on the fundamental aspects of technology to serve the ageing society
Prior research has critiqued the lack of attention to the stressors associated with dementia rela... more Prior research has critiqued the lack of attention to the stressors associated with dementia related dressing issues, stigmatizing patient clothing, and wearable technology challenges. This paper describes the conceptual development and feasibility testing of an innovative 'smart dresser' context aware affective system (DRESS) to enable dressing by people with moderate memory loss through individualized audio and visual task prompting in real time. Mixed method feasibility study involving qualitative focus groups with 25 Alzheimer's family caregivers experiencing dressing difficulties to iteratively inform system design and a quantitative usability trial with 10 healthy subjects in a controlled laboratory setting to assess validity of technical operations. Caregivers voiced the need for tangible dressing assistance to reduce their frustration from time spent in repetitive cueing and power struggles over dressing. They contributed 6 changes that influenced the prototype d...
Mobile touchscreen computing devices, including tablets and smartphones, are commonly used for bo... more Mobile touchscreen computing devices, including tablets and smartphones, are commonly used for both personal and work purposes. Recent statistics show that 45% of Americans own a smartphone[1]. These rapidly spreading hand-held devices increase the possibility of repetitive strain injuries or other musculoskeletal disorders related to the overuse of the fingers and thumb. Previous studies have investigated factors such as thumb posture and motor performance during hand-held smartphone use[2]. The purpose of this study was to quantitatively compare finger joint biomechanics during common one- and two-finger gestures used on a touchscreen hand-held computing device. We hypothesized that two-finger gestures would involve larger changes in joint angles of the digits and greater muscular activity than one-finger gestures.
A musculoskeletal model of the human index finger can provide a better understanding of hand dyna... more A musculoskeletal model of the human index finger can provide a better understanding of hand dynamics and control during multi-touch gestures used on hand-held touchscreen computing devices. As a first step toward a musculoskeletal model capable of describing the complex, multi-finger gestures used for touchscreen devices, we seek to incorporate intrinsic hand muscles into an existing musculoskeletal model of the human arm [5]. Although several studies have measured hand muscle moment arms in vivo and in situ [1-3], measurements of moment arms alone are insufficient for homeomorphic models like OpenSim [4]. Moment arms are indeterminate: many combinations of muscle- tendon paths could result in the same moment arm. We therefore developed techniques for data-driven optimization to determine attachments that reproduce measured moment arms for intrinsic and extrinsic muscles and tendons of the index finger.
Keywords: Tactile sensing, force, optical and ceramic sensors ... Many surveys [25] have reported... more Keywords: Tactile sensing, force, optical and ceramic sensors ... Many surveys [25] have reported different tasks for which a disabled user might use an assistive robot. Commercial (eg [30], [19]) and numerous research systems have been developed. Rehabilitation ser-vice ...
Gerontechnology : international journal on the fundamental aspects of technology to serve the ageing society
Prior research has critiqued the lack of attention to the stressors associated with dementia rela... more Prior research has critiqued the lack of attention to the stressors associated with dementia related dressing issues, stigmatizing patient clothing, and wearable technology challenges. This paper describes the conceptual development and feasibility testing of an innovative 'smart dresser' context aware affective system (DRESS) to enable dressing by people with moderate memory loss through individualized audio and visual task prompting in real time. Mixed method feasibility study involving qualitative focus groups with 25 Alzheimer's family caregivers experiencing dressing difficulties to iteratively inform system design and a quantitative usability trial with 10 healthy subjects in a controlled laboratory setting to assess validity of technical operations. Caregivers voiced the need for tangible dressing assistance to reduce their frustration from time spent in repetitive cueing and power struggles over dressing. They contributed 6 changes that influenced the prototype d...
Mobile touchscreen computing devices, including tablets and smartphones, are commonly used for bo... more Mobile touchscreen computing devices, including tablets and smartphones, are commonly used for both personal and work purposes. Recent statistics show that 45% of Americans own a smartphone[1]. These rapidly spreading hand-held devices increase the possibility of repetitive strain injuries or other musculoskeletal disorders related to the overuse of the fingers and thumb. Previous studies have investigated factors such as thumb posture and motor performance during hand-held smartphone use[2]. The purpose of this study was to quantitatively compare finger joint biomechanics during common one- and two-finger gestures used on a touchscreen hand-held computing device. We hypothesized that two-finger gestures would involve larger changes in joint angles of the digits and greater muscular activity than one-finger gestures.
A musculoskeletal model of the human index finger can provide a better understanding of hand dyna... more A musculoskeletal model of the human index finger can provide a better understanding of hand dynamics and control during multi-touch gestures used on hand-held touchscreen computing devices. As a first step toward a musculoskeletal model capable of describing the complex, multi-finger gestures used for touchscreen devices, we seek to incorporate intrinsic hand muscles into an existing musculoskeletal model of the human arm [5]. Although several studies have measured hand muscle moment arms in vivo and in situ [1-3], measurements of moment arms alone are insufficient for homeomorphic models like OpenSim [4]. Moment arms are indeterminate: many combinations of muscle- tendon paths could result in the same moment arm. We therefore developed techniques for data-driven optimization to determine attachments that reproduce measured moment arms for intrinsic and extrinsic muscles and tendons of the index finger.
Keywords: Tactile sensing, force, optical and ceramic sensors ... Many surveys [25] have reported... more Keywords: Tactile sensing, force, optical and ceramic sensors ... Many surveys [25] have reported different tasks for which a disabled user might use an assistive robot. Commercial (eg [30], [19]) and numerous research systems have been developed. Rehabilitation ser-vice ...
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Papers by Cecil Lozano