title: Application of Swingler's Method for Analysis of Multicomponent Exponentials with Special Attention to Non-equispaced Data

authors: Hasan, Rahat

subjects: Science & Technology

abstract: Swingler enhanced the work of Gardner to provide an elegant deconvolution method by which multiple summed exponential components might be resolved within time-domain data. Nevertheless, the application of the method remains limited owing to subtle complications that discourage many users. We present a tutorial and extend the approach to handle nonequispaced data. Finally the method’s limits are identified in the case of closely-spaced exponential components with added input noise.

text: Application of Swingler's Method for Analysis of Multicomponent Exponentials with Special Attention to Non-equispaced Data Swingler enhanced the work of Gardner to provide an elegant deconvolution method by which multiple summed exponential components might be resolved within time-domain data. Nevertheless, the application of the method remains limited owing to subtle complications that discourage many users. We present a tutorial and extend the approach to handle nonequispaced data. Finally the method’s limits are identified in the case of closely-spaced exponential components with added input noise.

year: 2016

title: Marks of conscious engagement when performing a motor task with or without a robotic arm

authors: Wright, Madison

subjects: conscious control

abstract: Utilizing prosthetic limbs effectively and alleviating the conscious burden through
minimizing conscious control is important to address and understand in the ever-changing
world of technology. Prosthetics can be difficult to learn how to use effectively and using them
increases conscious awareness which is termed a burden. The conscious burden prosthetics
have on users is consistently addressed by a multitude of studies and garners for more in depth
research to understand and identify solutions to alleviate this burden. Conscious motor control
is defined as the level of awareness of an individual performing a movement related skill or
task, where the higher the conscious control the more an individual is thinking of their
movements while executing them. The aim of this thesis was to measure conscious burden
objectively by examining the marks of conscious engagement when performing a reaction time
task with and without a robotic arm.

Chapter 1 is an introduction to this thesis including a literature review of relevant topics
such as prosthetic limbs, conscious movement control, subjective and objective measurements
of conscious movement control and electroencephalography (EEG). Prosthetic rejection rates,
conscious burden and prosthetic limb learning are also addressed. The outline of the experiment
for this thesis is included and discussed more in depth in Chapter 2.

Chapter 2 is the experiment in full examining the level of conscious control while
participating in a reaction time based motor learning task using a robotic arm versus own arm.
There were two conditions, the complex condition (multi-choice) and simple condition (single
choice). A secondary task of tone counting was included in half the trials to examine whether
more conscious processing is involved when working with the robotic arm versus normal arm
while doing the reaction time task. It was expected that there would be higher conscious control
and slower reaction times when participants used the robotic arm compared to their own arm.

EEG was used to assess the connectivity between the left temporal verbal-analytical (T7) site
and the motor planning mid-frontal (Fz) site of the brain. Connectivity of T7-Fz is used to
measure the verbal-analytical engagement in motor planning which is then used to measure
conscious control. The results revealed the complex condition had a significantly higher
reaction time dual-task cost for arm compared to robotic arm and a higher T7-Fz connectivity
dual-cost (difference in performance for single versus dual task) for the robotic arm in the
complex condition compared to simple condition. We concluded that use of a robotic arm
increases verbal-analytical engagement when performing a motor task compared to using the
own arm.

Chapter 3 is the overall discussion of the experimental findings for the use of robotic
arms in reaction time tasks measuring conscious control and what it may mean for future
research. Implicit motor learning is discussed as well as implicit motor learning interventions
such as dual-task learning, analogy learning and errorless learning. There are also other
learning interventions to promote intuitive control in prosthetic limb learning such as gaze
training and neurofeedback.

text: Marks of conscious engagement when performing a motor task with or without a robotic arm Utilizing prosthetic limbs effectively and alleviating the conscious burden through
minimizing conscious control is important to address and understand in the ever-changing
world of technology. Prosthetics can be difficult to learn how to use effectively and using them
increases conscious awareness which is termed a burden. The conscious burden prosthetics
have on users is consistently addressed by a multitude of studies and garners for more in depth
research to understand and identify solutions to alleviate this burden. Conscious motor control
is defined as the level of awareness of an individual performing a movement related skill or
task, where the higher the conscious control the more an individual is thinking of their
movements while executing them. The aim of this thesis was to measure conscious burden
objectively by examining the marks of conscious engagement when performing a reaction time
task with and without a robotic arm.

Chapter 1 is an introduction to this thesis including a literature review of relevant topics
such as prosthetic limbs, conscious movement control, subjective and objective measurements
of conscious movement control and electroencephalography (EEG). Prosthetic rejection rates,
conscious burden and prosthetic limb learning are also addressed. The outline of the experiment
for this thesis is included and discussed more in depth in Chapter 2.

Chapter 2 is the experiment in full examining the level of conscious control while
participating in a reaction time based motor learning task using a robotic arm versus own arm.
There were two conditions, the complex condition (multi-choice) and simple condition (single
choice). A secondary task of tone counting was included in half the trials to examine whether
more conscious processing is involved when working with the robotic arm versus normal arm
while doing the reaction time task. It was expected that there would be higher conscious control
and slower reaction times when participants used the robotic arm compared to their own arm.

EEG was used to assess the connectivity between the left temporal verbal-analytical (T7) site
and the motor planning mid-frontal (Fz) site of the brain. Connectivity of T7-Fz is used to
measure the verbal-analytical engagement in motor planning which is then used to measure
conscious control. The results revealed the complex condition had a significantly higher
reaction time dual-task cost for arm compared to robotic arm and a higher T7-Fz connectivity
dual-cost (difference in performance for single versus dual task) for the robotic arm in the
complex condition compared to simple condition. We concluded that use of a robotic arm
increases verbal-analytical engagement when performing a motor task compared to using the
own arm.

Chapter 3 is the overall discussion of the experimental findings for the use of robotic
arms in reaction time tasks measuring conscious control and what it may mean for future
research. Implicit motor learning is discussed as well as implicit motor learning interventions
such as dual-task learning, analogy learning and errorless learning. There are also other
learning interventions to promote intuitive control in prosthetic limb learning such as gaze
training and neurofeedback.

year: 2024

title: The Te Kotahitanga Observation Tool: Development, use, reliability and validity.

authors: Berryman, Mere

subjects: chool reform

abstract: Te Kotahitanga is a New Zealand school reform project aimed at improving the pedagogical contexts in mainstream classrooms in which the indigenous Māori students have traditionally been marginalised. It does this by assisting teachers to implement an Effective Teaching Profile. Part of this process uses an observation tool to monitor the degree to which participating teachers are incorporating the interactions and relationships described in the Effective Teaching Profile into their day-to-day teaching. Given the central importance of these tasks, the Te Kotahitanga team undertook to test the observation tool for measurement reliability and validity. In order to undertake this study, the team conducted synchronous observations amongst trainers (the Professional Development Coordinator and Regional Coordinators) to ascertain their level of consistency when using the tool. The team then conducted synchronous observations between trainers and 38 in-school facilitators in the 12 schools involved in Phase 3 of the project. In total 41 teachers were observed and over 200 Māori students were involved in these observations. This study suggests that the tool can produce consistent and reliable results when observers have been effectively trained.

text: The Te Kotahitanga Observation Tool: Development, use, reliability and validity. Te Kotahitanga is a New Zealand school reform project aimed at improving the pedagogical contexts in mainstream classrooms in which the indigenous Māori students have traditionally been marginalised. It does this by assisting teachers to implement an Effective Teaching Profile. Part of this process uses an observation tool to monitor the degree to which participating teachers are incorporating the interactions and relationships described in the Effective Teaching Profile into their day-to-day teaching. Given the central importance of these tasks, the Te Kotahitanga team undertook to test the observation tool for measurement reliability and validity. In order to undertake this study, the team conducted synchronous observations amongst trainers (the Professional Development Coordinator and Regional Coordinators) to ascertain their level of consistency when using the tool. The team then conducted synchronous observations between trainers and 38 in-school facilitators in the 12 schools involved in Phase 3 of the project. In total 41 teachers were observed and over 200 Māori students were involved in these observations. This study suggests that the tool can produce consistent and reliable results when observers have been effectively trained.

year: 2011