Christa
Mclellan
Sponsor: Lee Miller, Ph.D. MED: Otolaryngology The neural mechanisms responsible for listening to language in a noisy environment are poorly understood. Our current EEG findings are from a larger three-part study to better quantify listening ability. Participants listen to a story with chirp speech ("Cheech"). This allows us to examine neural activity at multiple time scales. Participants report "color" words in the target story. The two condition types are a "single speaker" playing a target story and a "dual speaker" playing a target and distractor story concurrently. We observed significant EEG component differences at peak amplitudes after chirp onset of "color" words for the single talker compared to the dual talker conditions. In auditory brainstem responses (ABR), reflecting the early encoding of sound, we observed more negative peaks before and after Wave V. The Middle Latency Responses (MLR), which corresponds with the transmission of speech information from lower to higher levels of processing, exhibited a more negative Na component. The Late Latency Responses (LLR), historically associated with higher cognitive processes, showed a more positive Pb component peak amplitude. These multilevel component amplitude differences could be indicative of additional cognitive demand of listening to speech with noise, when compared to listening with no distractions. Using Ecological Monitoring to Assess Restoration Goals at the UC Davis Putah Creek Riparian Reserve
Abstract profile. Full document pending author claim.
Authors:
Christa Mclellan
Date Created:
Not specified
Course Title:
Professor:
Not specified
About Paper:
A major challenge in restoration is managing for multiple goals. Monitoring plays a critical role in determining the feasibility of meeting these goals. There is particular interest in assessing whether ecological goals can be provided by small strips of wildland between agricultural patches. We determined the ecological services and challenges provided by a plot of land owned by the Putah Creek Riparian Reserve, which has the long- term goals of increasing biodiversity and ecosystem functionality. We focused on three aspects of the habitat: the vegetation composition, soil and water quality, and wildlife presence. We found the site had minimal vegetative structural diversity, and was dominated by non-native flora, indicating a loss in potential biodiversity. Our water testing revealed coliform contamination, which potentially runs off into Putah Creek. We recommend increasing the presence of riparian and wetland herbaceous species that will improve biodiversity and provide the ecosystem service of water filtration. There were frequent sightings of large mammals, suggesting that small strips of natural lands in an agricultural landscape can be critical for wildlife. Further restoration of plant structural diversity could encourage wildlife use. By utilizing our monitoring results, the Reserve can make informed decisions for the restoration of this site. Clinical Presentation Influences Examiner Confidence in Autism Spectrum Disorder Diagnoses Emma McNeilly
Source:
UC Davis / Plant Sciences / 2023
Topics:
No topics listed
Co-authors:
Christa Mclellan