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- All Subjects: Movement Planning
- All Subjects: Startle-evoked Movements
- All Subjects: Technology
- Member of: Barrett, The Honors College Thesis/Creative Project Collection
- Resource Type: Text
Description
Body-worn camera technology is a relatively new player in the field of criminal justice. As much as they are being reported on or discussed, in reality, body-worn cameras have not been in use long enough to have strong empirical support. Recent studies outlined some of the perceived benefits and costs of the body-worn cameras. Research has been done on both officer and citizen perceptions of the cameras, but little has been done in regards to other stakeholders, especially those in the criminal justice system. This study takes 13 interviews of community and criminal justice stakeholders in Tempe, Arizona and examines trends to identify unifying themes. The study found that 11 out of 13 stakeholders believed that the positives of the body-worn cameras outweighed the negatives. There was agreement among the parties that the strongest benefit of the cameras would be the transparency that it provides police departments, while most regarded the largest negative to be a lack of available resources to deal with the amount of data produced. As this is a small qualitative dataset, further research should be conducted about stakeholder perceptions in other cities, as well as solutions to some of the concerns raised by Tempe interviewees.
ContributorsArenas, Lauren (Author) / White, Michael (Thesis director) / Gaub, Janne (Committee member) / Department of Psychology (Contributor) / School of Criminology and Criminal Justice (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
Previous research has shown that a loud acoustic stimulus can trigger an individual's prepared movement plan. This movement response is referred to as a startle-evoked movement (SEM). SEM has been observed in the stroke survivor population where results have shown that SEM enhances single joint movements that are usually performed with difficulty. While the presence of SEM in the stroke survivor population advances scientific understanding of movement capabilities following a stroke, published studies using the SEM phenomenon only examined one joint. The ability of SEM to generate multi-jointed movements is understudied and consequently limits SEM as a potential therapy tool. In order to apply SEM as a therapy tool however, the biomechanics of the arm in multi-jointed movement planning and execution must be better understood. Thus, the objective of our study was to evaluate if SEM could elicit multi-joint reaching movements that were accurate in an unrestrained, two-dimensional workspace. Data was collected from ten subjects with no previous neck, arm, or brain injury. Each subject performed a reaching task to five Targets that were equally spaced in a semi-circle to create a two-dimensional workspace. The subject reached to each Target following a sequence of two non-startling acoustic stimuli cues: "Get Ready" and "Go". A loud acoustic stimuli was randomly substituted for the "Go" cue. We hypothesized that SEM is accessible and accurate for unrestricted multi-jointed reaching tasks in a functional workspace and is therefore independent of movement direction. Our results found that SEM is possible in all five Target directions. The probability of evoking SEM and the movement kinematics (i.e. total movement time, linear deviation, average velocity) to each Target are not statistically different. Thus, we conclude that SEM is possible in a functional workspace and is not dependent on where arm stability is maximized. Moreover, coordinated preparation and storage of a multi-jointed movement is indeed possible.
ContributorsOssanna, Meilin Ryan (Author) / Honeycutt, Claire (Thesis director) / Schaefer, Sydney (Committee member) / Harrington Bioengineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12