Processing of Binaural Information in Human Auditory Cortex

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Recovery Methodologies and High Intensity Interval Training

The purpose of this study was to determine recovery from Tabata bodyweight high intensity interval training (HIIT) exercise using different recovery assessment methodologies across 24- and 48-hour time intervals. Participants (23.2 ± 3.1 years old, 163.1 ± 19.9 lbs., and 22.8 ± 9.6 % body fat) consisted of 3 females and 7 males (n=10) Individuals who were recreationally trained (4+ days per week, 30+ minutes per day at moderate to vigorous intensity) and conducted both Trial A (24-hours between HIIT sessions) and Trial B (48-hours between HIIT sessions). Before and during each session, heart rate, countermovement jump, perceptual, and psychological measures were recorded. There were two statistically significant results. The first was the Perceived Recovery Status scale (PRS) for both trials (A, p = 0.005. B, p = 0.007) and the second was the Brunel Mood Scale assessment within Trial B (p = 0.012). These results support the assertion that assessment of perceptions of recovery are sensitive methodologies in measuring recovery from Tabata bodyweight HIIT exercise

Recovery Methodologies and High Intensity Interval Training

As the implementation of high intensity interval training (HIIT) continues to grow among a variety of exercisers, as such, its optimization within a training program must be considered. As with any mode of exercise this necessitates adequate recovery to elicit optimal adaptation and understanding day-to-day recovery from HIIT will permit the greatest benefits for those who desire specific the outcomes from this training. PURPOSE: The purpose of this study was to determine day-to-day recovery from Tabata bodyweight HIIT exercise using different recovery assessment methodologies across 24- and 48-hour time intervals. METHODS: Participants (23.2 ± 3.1 years old, 163.1 ± 19.9 lbs., and 22.8 ± 9.6 % body fat) consisted of 3 females and 7 males (n=10). Individuals were recreationally trained (4+ days per week, 30+ minutes per day at moderate to vigorous intensity) and conducted both Trial A (24-hours between HIIT sessions) and Trial B (48-hours between HIIT sessions). Before and during each session, heart rate (HR), countermovement jump (CMJ), Perceived Recovery Status scale (PRS), perceived readiness (HIITRED), perceived soreness (PDOMS), Brunel Mood Scale Assessment (BRUMS), Ratings of Perceived Exertion (RPE), and number of repetitions. RESULTS: One-way analysis of variance was used to analyze RHR, HRavg, HRrecov, and repetitions completed. Wilcoxon Signed Ranks Test was used to analyze S-RPE, post-exercise RPE, PRS, HIIT readiness, PDOMS, and BRUMS. Significance for all analyses was set at p \u3c 0.05. Two results displayed sensitivity to assessing recovery after conducting each HIIT session. The first was the Perceived Recovery Status scale (PRS) for both trials (A, p = 0.005. B, p = 0.007) and the second was the Brunel Mood Scale assessment within Trial B (p = 0.012). DISCUSSION: Although other methodologies did not display significant sensitivity to recovery, trends across session HR, PRS, HIITRED, PDOMS, and BRUMS indicate that participants were perceptually less recovered and ready for Day 2 Trial A than Day 2 Trial B. These results support the assertion that assessment of perceptions of recovery are sensitive methodologies in measuring recovery from Tabata bodyweight HIIT exercise

Shaping Student Identities: A Gendered Examination of the College Chronicle in the 1950s

Award for Best Dimension of the Year Reflection: Think Creatively and Critically . Abstract: The submission’s goal is to articulate how students in the 1950s shaped their identity in relationship to gender and gendered work in a clear and concise manner. The submission must not only look at the content provided in the sculpting of this identity, but also it must examine exactly how the sculpting of the identity took place, namely, communications in the student newspaper. One cannot prioritize the arguments for or against female industrialized labor and leave out the dimensions of male and female athletics. Likewise, it cannot leave out any advertisement or event sponsored by men or women associations. The project must demonstrate that identities were shaped in a multitude of ways even when providing a focused look at the contentions of gendered work. When looking into a field like gender, and especially gender discussions of years past, it is of the utmost importance to provide the narrative as the students themselves saw it in the 1950s and not as we would view it today. Therefore, it will be important for any presentation or evaluation of this topic to understand the narrative of “separate spheres”. This concept is a historical consensus of gendered work occurring in one sphere for each gender. The male sphere focused upon the perceived masculine tasks of industry, while the female sphere focused on the feminine tasks of domesticity. It is from this general understanding of separate spheres, and the interpenetration of these spheres, that caused the gendered contentions examined in the newspaper

Mars Express observations of high altitude planetary ion beams and their relation to the “energetic plume” loss channel

This study presents observational evidence of high‐energy (ions >2 keV) beams of planetary ions above Mars' induced magnetospheric boundary (IMB) and relates them with the energetic plume loss channel calculated from numerical models. A systematic search of the Mars Express (MEX) ion data using an orbit filtering criteria is described, using magnetometer data from Mars Global Surveyor (MGS) to determine the solar wind motional electric field (Esw) direction. Two levels of statistical survey are presented, one focused on times when the MEX orbit was directly in line with the Esw and another for all angles between the MEX location and the Esw. For the first study, within the 3 year overlap of MGS and MEX, nine brief intervals were found with clear and unambiguous high‐energy O+ observations consistent with the energetic plume loss channel. The second survey used a point‐by‐point determination of MEX relative to the E‐field and contained many thousands of 192 s measurements. This study yielded only a weak indication for an Esw‐aligned plume. Furthermore, the y‐z components of the weighted average velocities in the bins of this y‐z spatial domain survey do not systematically point in the Esw direction. The first survey implies the existence of this plume and shows that its characteristics are seemingly consistent with the expected energy and flight direction from numerical studies; the second study softens the finding and demonstrates that there are many planetary ions beyond the IMB moving in unexpected directions. Several possible explanations for this discrepancy are discussed.Key PointsA plume of energetic (>2 keV) planetary ions is escaping from MarsThe plume is directed along the solar wind motional electric fieldClarity of plume signatures greatly depends on selected survey methodologyPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/110626/1/jgra51418.pd

Ionospheric control of the dawn‐dusk asymmetry of the Mars magnetotail current sheet

This study investigates the role of solar EUV intensity at controlling the location of the Mars magnetotail current sheet and the structure of the lobes. Four simulation results are examined from a multifluid magnetohydrodynamic model. The solar wind and interplanetary magnetic field (IMF) conditions are held constant, and the Mars crustal field sources are omitted from the simulation configuration. This isolates the influence of solar EUV. It is found that solar maximum conditions, regardless of season, result in a Venus‐like tail configuration with the current sheet shifted to the −Y (dawnside) direction. Solar minimum conditions result in a flipped tail configuration with the current sheet shifted to the +Y (duskside) direction. The lobes follow this pattern, with the current sheet shifting away from the larger lobe with the higher magnetic field magnitude. The physical process responsible for this solar EUV control of the magnetotail is the magnetization of the dayside ionosphere. During solar maximum, the ionosphere is relatively strong and the draped IMF field lines quickly slip past Mars. At solar minimum, the weaker ionosphere allows the draped IMF to move closer to the planet. These lower altitudes of the closest approach of the field line to Mars greatly hinder the day‐to‐night flow of magnetic flux. This results in a buildup of magnetic flux in the dawnside lobe as the S‐shaped topology on that side of the magnetosheath extends farther downtail. The study demonstrates that the Mars dayside ionosphere exerts significant control over the nightside induced magnetosphere of that planet.Plain Language SummaryMars, which does not have a strong magnetic field, has an induced magnetic environment from the draping of the interplanetary magnetic field from the Sun. It folds around Mars, forming two “lobes” of magnetic field behind the planet with a current sheet of electrified gas (plasma) behind it. The current sheet is not directly behind the planet but rather shifted toward the dawn or dusk direction. It is shown here that one factor controlling the location of the current sheet is the dayside ionosphere. At solar maximum, the ionosphere is dense, the magnetic field slips easily by the planet, and the current sheet is shifted toward dawn. At solar minimum, the ionosphere is relatively weak, the magnetic field slippage is slowed down, and the current sheet shifts toward dusk.Key PointsThere is a systematic Y (i.e., dawn‐dusk) asymmetry in the location of the Martian magnetotail current sheet in modified MSE coordinatesThe asymmetry is controlled by ionospheric conditions, shifting to the dawn (‐Y) during solar maximum and to the dusk during solar minimumThe shift found in this study is not a function of crustal fields, which were omitted, or solar wind conditions, which were held constantPeer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/137681/1/jgra53609_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/137681/2/jgra53609.pd

Neither a Multi-Ingredient Pre-Workout Supplement nor Caffeine Were Effective at Improving Markers of Blood Flow or Upper-Body Resistance Exercise Performance

International Journal of Exercise Science 13(2): 167-182, 2020. Few studies have measured the effects of multi-ingredient pre-workout supplements on blood flow or heart rate variability or have compared a multi-ingredient pre-workout supplement to a matched single ingredient. This study examined the effects of a multi-ingredient pre-workout supplement, an equivalent amount of caffeine, and placebo on markers of resistance training performance, blood flow, blood pressure, and heart rate variability. The study utilized a randomized, placebo-controlled, repeated-measures, crossover design. Twelve resistance-trained males (22.75 ± 4.51 yrs; 183.4 ± 7.37 cm; 91.05 ± 17.77 kg) completed the study. Resistance exercise performance was defined as total work performed during elbow flexion and extension on an isokinetic dynamometer. Blood flow was calculated using time-averaged mean velocity and blood vessel diameter of the right brachial artery, which were measured via Doppler ultrasound. Heart rate was recorded using an electrocardiogram. Neither a multi-ingredient pre-workout supplement nor caffeine alone improved upper-body resistance exercise performance or markers of blood flow relative to placebo. No differences in heart rate variability were observed across treatments. A multi-ingredient pre-workout supplement was not effective at improving performance or blood flow and did not alter autonomic nervous system function

Gene expression and data analysis pipeline using cancer BioPortal in the classroom

At institutions with an emphasis on authentic research experiences as an integral part of the biology curriculum, COVID created a huge challenge for course instructors whose learning objectives were designed for such experiences. Moving such laboratory experiences online when remote learning became necessary has resulted in a new model for CUREs that utilizes free online databases to provide not only a novel research experience for students, but also the opportunity to engage in big data analysis. Cancer BioPortal (cBioPortal) is an open-access collective cancer research resource for storing and exploring clinical, genomic, proteomic, and transcriptomic data. cBioPortal eliminates the computational barrier of interpreting complex genomic data by providing easily understandable visualization that can be interpreted and translated into relevant biological insights. Because no prior computational knowledge is required, cBioPortal is an ideal educational tool for either in-person or distance learning environments. We developed a pedagogical approach, video tutorials, and data analysis workflows centered on using cBioPortal. Pedagogically, students develop an initial research outline that is continually updated and graded throughout the project. Progress during the project or course is assessed by a series of student presentations that are 5 to 15 minutes in length and are aimed at explaining the approach used in data acquisition, interpretation of the data, and relevance to the initial hypothesis. While cancer-specific, this analysis platform appeals to a wide range of classes and student interests. Further, the project has been successfully done both as an independent research experience and as part of a virtual class-based research project