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The Influence Of Time Spent In Beginning And End-State Postures On Grasp Choice, Rachel Modersitzki
The Influence Of Time Spent In Beginning And End-State Postures On Grasp Choice, Rachel Modersitzki
Undergraduate Honors Capstone Projects
The choice to end comfortably often requires adoption of uncomfortable beginning states, demonstrating that a sequence of movement is planned in advance of movement onset. Many factors may influence the choice of comfortable end-state postures including the greater precision and speed afforded by postures at joint angle mid-ranges (Short & Cauraugh, 1999). There has been no evaluation of the hypothesis that postures are chosen based on minimizing time spent in postures. Typically, the time spent in beginning and end-states are not explicitly constrained, but the end-state posture is likely held for the longer amount of time due to greater precision …
The Vestibular Contribution To Balance Control In Older Adults During Locomotion And Stair Negotiation, Megan Elwood
The Vestibular Contribution To Balance Control In Older Adults During Locomotion And Stair Negotiation, Megan Elwood
Undergraduate Honors Capstone Projects
Background: Stability is known to decrease as we age, but currently we know very little about how the body's balance system, the vestibular system, contributes to balance control in older adults, particularly while walking and climbing stairs. The purpose of this study was to take the first step in understanding vestibular contribution to balance control during locomotion and stair negotiation, and how this changes with age.
Methods: Ten young adults and six older adults ascended and descended a nine-step staircase 78 times and walked on a treadmill for 10 minutes to complete a total of 300 complete steps in …
The Role Of Trailing Behavior In Conspecific Mating In Thamnophis Elegans And Thamnophis Sirtalis, Eleanor Watson
The Role Of Trailing Behavior In Conspecific Mating In Thamnophis Elegans And Thamnophis Sirtalis, Eleanor Watson
Undergraduate Honors Capstone Projects
In many gartersnake species, successful mating depends on the ability of males to follow pheromone trails left by females. The populations we investigated (Thamnophis sirtalis and Thamnophis elegans, closely related sympatric species) overwinter together and simultaneously emerge. Although, mating occurs concurrently, there is no evidence of hybridization. Therefore, we sought to investigate the mechanisms that allow male snakes to differentiate between heterospecific and conspecific females to ensure mating success. Behavior studies were conducted by presenting male snakes with extracted scents of conspecific females, heterospecific females, and conspecific males. We measured male preference by number of investigatory tongue flicks …