ºÝºÝߣshows by User: JuYoungLee60 / http://www.slideshare.net/images/logo.gif ºÝºÝߣshows by User: JuYoungLee60 / Tue, 11 Feb 2020 17:40:45 GMT ºÝºÝߣShare feed for ºÝºÝߣshows by User: JuYoungLee60 Scientific Realism and Scientific Anti-Realism (2017) /slideshow/scientific-realism-and-scientific-antirealism-2017/227648431 jylpresentation-200211174045
Introduction to the debate between Scientific Realist and Scientific Anti-realist. I focus on Constructive Empiricism suggested by Ban Van Fraassen.]]>
Introduction to the debate between Scientific Realist and Scientific Anti-realist. I focus on Constructive Empiricism suggested by Ban Van Fraassen.]]> Tue, 11 Feb 2020 17:40:45 GMT /slideshow/scientific-realism-and-scientific-antirealism-2017/227648431 JuYoungLee60@slideshare.net(JuYoungLee60) Scientific Realism and Scientific Anti-Realism (2017) JuYoungLee60 Introduction to the debate between Scientific Realist and Scientific Anti-realist. I focus on Constructive Empiricism suggested by Ban Van Fraassen. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/jylpresentation-200211174045-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Introduction to the debate between Scientific Realist and Scientific Anti-realist. I focus on Constructive Empiricism suggested by Ban Van Fraassen.
Scientific Realism and Scientific Anti-Realism (2017) from Ju Young Lee
]]> 277 0 https://cdn.slidesharecdn.com/ss_thumbnails/jylpresentation-200211174045-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Distribution of Z values in task-fMRI not centered around zero (OHBM 2018) /JuYoungLee60/distribution-of-z-values-in-taskfmri-not-centered-around-zero posterohbmprint-200211172432
Most fMRI results are reported after conducting hypothesis test on every voxel and applying threshold to the test statistics. However, researchers don’t often check the distribution of the test statistics. Theoretically, the null distribution of the Z scores is supposed to resemble standard Gaussian distribution. However, this study illustrates that the Z score distribution is often not centred around 0 but is shifted. With task fMRI dataset acquired from Human Connectome Project (S1200), I evaluated the shift of Z score distribution. The correlation between Z score distribution shift and head motion was very small. Furthermore, subject dependency of the Z score shift was tested by comparing shift of the Z score in different task fMRI. The result showed that Z score shift is not subject-dependent. Lastly, I checked that the Z score shift occurs within the white matter region as well. Based on these results, I suspect that this problem is not due to the physiology of the brain but perhaps due to technical problem of the MRI machine.]]>
Most fMRI results are reported after conducting hypothesis test on every voxel and applying threshold to the test statistics. However, researchers don’t often check the distribution of the test statistics. Theoretically, the null distribution of the Z scores is supposed to resemble standard Gaussian distribution. However, this study illustrates that the Z score distribution is often not centred around 0 but is shifted. With task fMRI dataset acquired from Human Connectome Project (S1200), I evaluated the shift of Z score distribution. The correlation between Z score distribution shift and head motion was very small. Furthermore, subject dependency of the Z score shift was tested by comparing shift of the Z score in different task fMRI. The result showed that Z score shift is not subject-dependent. Lastly, I checked that the Z score shift occurs within the white matter region as well. Based on these results, I suspect that this problem is not due to the physiology of the brain but perhaps due to technical problem of the MRI machine.]]> Tue, 11 Feb 2020 17:24:32 GMT /JuYoungLee60/distribution-of-z-values-in-taskfmri-not-centered-around-zero JuYoungLee60@slideshare.net(JuYoungLee60) Distribution of Z values in task-fMRI not centered around zero (OHBM 2018) JuYoungLee60 Most fMRI results are reported after conducting hypothesis test on every voxel and applying threshold to the test statistics. However, researchers don’t often check the distribution of the test statistics. Theoretically, the null distribution of the Z scores is supposed to resemble standard Gaussian distribution. However, this study illustrates that the Z score distribution is often not centred around 0 but is shifted. With task fMRI dataset acquired from Human Connectome Project (S1200), I evaluated the shift of Z score distribution. The correlation between Z score distribution shift and head motion was very small. Furthermore, subject dependency of the Z score shift was tested by comparing shift of the Z score in different task fMRI. The result showed that Z score shift is not subject-dependent. Lastly, I checked that the Z score shift occurs within the white matter region as well. Based on these results, I suspect that this problem is not due to the physiology of the brain but perhaps due to technical problem of the MRI machine. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/posterohbmprint-200211172432-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Most fMRI results are reported after conducting hypothesis test on every voxel and applying threshold to the test statistics. However, researchers don’t often check the distribution of the test statistics. Theoretically, the null distribution of the Z scores is supposed to resemble standard Gaussian distribution. However, this study illustrates that the Z score distribution is often not centred around 0 but is shifted. With task fMRI dataset acquired from Human Connectome Project (S1200), I evaluated the shift of Z score distribution. The correlation between Z score distribution shift and head motion was very small. Furthermore, subject dependency of the Z score shift was tested by comparing shift of the Z score in different task fMRI. The result showed that Z score shift is not subject-dependent. Lastly, I checked that the Z score shift occurs within the white matter region as well. Based on these results, I suspect that this problem is not due to the physiology of the brain but perhaps due to technical problem of the MRI machine.
Distribution of Z values in task-fMRI not centered around zero (OHBM 2018) from Ju Young Lee
]]> 57 0 https://cdn.slidesharecdn.com/ss_thumbnails/posterohbmprint-200211172432-thumbnail.jpg?width=120&height=120&fit=bounds document Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 PMS/PMDD and neuroimaging /slideshow/pmspmdd-and-neuroimaging/106576691 juyoungpresentation-180719101915
Neuroimaging study on premenstrual syndrome and premenstrual dysphoric disease.]]>
Neuroimaging study on premenstrual syndrome and premenstrual dysphoric disease.]]> Thu, 19 Jul 2018 10:19:15 GMT /slideshow/pmspmdd-and-neuroimaging/106576691 JuYoungLee60@slideshare.net(JuYoungLee60) PMS/PMDD and neuroimaging JuYoungLee60 Neuroimaging study on premenstrual syndrome and premenstrual dysphoric disease. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/juyoungpresentation-180719101915-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Neuroimaging study on premenstrual syndrome and premenstrual dysphoric disease.
PMS/PMDD and neuroimaging from Ju Young Lee
]]> 164 6 https://cdn.slidesharecdn.com/ss_thumbnails/juyoungpresentation-180719101915-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 https://public.slidesharecdn.com/v2/images/profile-picture.png https://cdn.slidesharecdn.com/ss_thumbnails/jylpresentation-200211174045-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/scientific-realism-and-scientific-antirealism-2017/227648431 Scientific Realism and... https://cdn.slidesharecdn.com/ss_thumbnails/posterohbmprint-200211172432-thumbnail.jpg?width=320&height=320&fit=bounds JuYoungLee60/distribution-of-z-values-in-taskfmri-not-centered-around-zero Distribution of Z valu... https://cdn.slidesharecdn.com/ss_thumbnails/juyoungpresentation-180719101915-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/pmspmdd-and-neuroimaging/106576691 PMS/PMDD and neuroimaging