Icons:
Navigation bar:
https://www.flaticon.com/free-icon/home_25694
https://www.flaticon.com/free-icon/eye-open_25186
https://thenounproject.com/term/pattern/81037/
https://thenounproject.com/aomam/collection/touch-gestures-glyph/
https://thenounproject.com/term/big-data/241529/
https://thenounproject.com/term/information/19518/
Social media:
https://en.facebookbrand.com/facebookapp/assets/f-logo/
https://parksidecandy.com/instagram-svg-small-5/
https://www.iconfinder.com/icons/294709/circle_twitter_icon
https://www.iconfinder.com/icons/294712/circle_youtube_icon
Articles:
https://askabiologist.asu.edu/questions/what-causes-optical-illusions
Images:
Sensory page:
https://piyushmishrapoemsbookpdffreedownload.blogspot.com/2020/01/images-illusions-book-free.html
https://effectindex.com/summaries/psychedelics/visual
http://opticevent.blogspot.com/2011/05/
Physical page:
https://www.thepoke.co.uk/2019/06/16/most-amazing-optical-illusion/
https://techxplore.com/news/2019-02-vision-optical-illusions.html
https://www.theguardian.com/commentisfree/2018/apr/01/revolution-in-our-sense-of-self-sunday-essay
https://www.quora.com/Is-a-brain-able-to-invent-more-colors-for-more-visual-contrast-or-a-larger-variety-of-photoreceptors
https://www.businessinsider.com/brain-and-the-things-you-cant-unsee-2014-5
https://chriscrossphotos.blogspot.com/2014/06/printable-optical-illusions.html
https://thenewdaily.com.au/life/science/2019/12/19/optical-illusion-dual-axis/
http://tsypenyuk.blogspot.com/2016/09/psychology-elective-optical-illusions.html
Visualization page: