THE NEED OF COMPUTATIONAL METHODS

The study of neuroanatomy involves highly labor-intensive work, including sectioning, staining, imagine, and data analysis. With the emergence of global collaborative brain projects such as the BRAIN Initiative, more and more high-throughput data have been produced. Therefore the urge of powerful computational tools been implemented into every aspect of neuroscience studies is in strong need. Our second paper is trying to make such an attempt. Moreover, better computational methods are needed for combining high-throughput neuroanatomy data with other high-throughput techniques (e.g., single cell sequencing).

6 ACKNOWLEDGEMENTS

There are many people I would like to thank for supporting me through all these years in Sweden. First of all, thank my main supervisor Marie Carlén for taking me as a PhD student and all your scientific guidance over the years. I really appreciated the open atmosphere in the lab and all the freedom in research. Thank you for showing me how to put everything together and make things happen. I’d also like to thank Dinos Meletis, my co-supervisor, who actually introduced me into the rabies world. Thank you for the guidance and discussions about virus.

Thank all my collaborators for adding your expertise to the projects in this thesis: Sofie Ährlund- Richter, Daniel Fürth, Hoseok Kim, Xinming Wang, Iskra Pollak Dorocic, Felix Wahl, Yvonne Johansson, Laura Pozzi, Gilad Silberberg, Daniel Kaping, Marc Parent, Ourania Tzortzi, Antje Märtin, Iakovos Lazaridis, Giada Spigolon, and Gilberto Fisone.

Thank you to all the previous and present DMC members for both the support in work and life, for the beers and retreats. Special thanks to: Sofie, for being always positive and keeping driving the project together; Xinming, for being always supportive to each other and all those brilliant molecular ideas; Hoseok, for all the kpop, Asian food and culture discussions, and all the hours we spent together in the animal house; Rania and Antje for the accompany in all those unforgettable working evenings and weekends; Daniel for amazing virus ideas; Iskra for working together and making it happen; Calvin for introducing me to the ephys world and fruitful discussions about science; Nicolas for knowing China better than me and all the sports/movie/food; Moritz for tlhingan and video game discussion; Josie for traveling together in Crete; Cantin for communism and beers; Micke for all the hours spent in the virus room and choir discussions.

Thank all my friends in the department and KI: the Hermanssons (Esra, Giulia, Xiaofei, Kuba, Michalina, and Aileen) for always being fun; Yvonne for doing gym together; Maya, Caro, Maria for the parties and beers; the Chinese lunch crew: Du Kai and Song Jianren for all the scientific and life discussions; Qian Yu for being as a doraemon; Jiang Shan for sharing running experiences; Li- ju for being as a strong girl; Yongtao for all the positive energy; Haohao and Yiqiao for random chats; Jian Yan for being my role model as a scientist; Jia Ting for showing me how hard-working a person can be; Yimeng and Bei Wei for showing me how to be doing great science yet still be nice; Minghui He for having lunch now and then and being updated with information from old colleagues; Rui Wang for the Swedish studies together and being by my side; Juan Du for showing me how energetic a new PI can be.

Thank you to all my Chinese friends here in Stockholm. Special thanks to: Ci Song for being the other me and taking care of me for so many years; Simba Qiu for being always by my side, giving me great advices, pushing me out of my comfort zone and picking up my emotional breaking down phone calls; my Stockholm Kinesiska Kör friends: Minyue Li for being always positive; Molan Li for also being as my sports buddy; Meiying Sun for all the wonderful food and games; Siyang Leo Dai, Jidong Tan, Ying Liu, Jisheng Wang, Jenny Huang, Xiaodong Zou, Hongmei Yan and Yaping Qu for being working and having fun together for the choir and being as friends; my poker game friends: Qiongzi for being generous and positive; Zheng Chang for taking care of Ci; Qiang Zhang, Yuning, Huan, Yixin for having fun together every Friday; Suo Chen for all the ballet shows together; my badminton friends: Yayun Feng for all the food, wine and game nights; Tianwei Gu for making me love Nanjing more; Chenglin for your hujian accent; Xu Hao for being my badminton double-mix partner; Yuncheng Wang for also playing with twitch; Lidi Xu, Peng Zhang, Jiangnan Luo, Genping, Hongyan, Fu Ping, Hu Wei, Zhang Qiong and Xiao Wei for organizing and sharing all the great moments together; my gym and board game friends: Xie Meng and Liu Yilin for gym, jokes and drinking talks; my barbeque friends: Yue Wang for cooking and ice-skating demonstrations; An Qin for being an inspiring drone pilot/engineer/coder/tailor/cook; Sheng Mugua Zhang for being the most memeda person; Gao Peng and Zhou Yuan for lappis garden treats; Yutong, Wenwen and

Yang Ke for dog talks; Xia Zhe for the shanghai homemade food treats; Hongyi for showing the robots; Qiuchen for exchanging stuff; Zhifei He for having the same sanguan; Ouyang Zhan for sharing running experience; Amir and Xi for being great neighbors.

Thank you to all my life long friends outside Sweden. Special thanks to: Phyllis Zhang, for always being full of energy and pushing me moving forward; Yisheng Wu, for all the support and phone calls over the years, and all the realistic suggestions; Zi Li, for staying idealist; Huajia Wang, for all the Chinese indie music and great ideas we’ve shared; Wei Lai, for the volleyball talks and showing me the royal botany garden; Sun Pei and Xuefan, for traveling together in Europe; Fangyan, for all the great German Chinese food; Felix Wong for volleyball and career-path discussions; Du Xin and Yan Qiang for being super generous and encouraging; Yinan Gong, for showing me how to stay calm and fight for yourself.

Thank you to my parents: Yongjian Xuan宣永健and Xingxin Xu许星⼼.

感谢爸爸妈妈多年来对我的教育，⼀路上的爱和⽆条件的支持。正因为有你们，我才 可以直直的往前⾛。爸爸的乐观开朗， 妈妈的⾏事果断，让我受益良多。

我还想说的是，⼀路⾛来并没有想象中的容易，谢谢⼤家陪我⼀起经历和成长。 不念过往，不畏将来，不忘初⼼。

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