diff --git a/.hash b/.hash
index 5e2b500..11bda22 100644
--- a/.hash
+++ b/.hash
@@ -1,5 +1,5 @@
 ainotes.cls,d9b2afb
-cognition-and-neuroscience,e49b4a7
+cognition-and-neuroscience,f619bee
 combinatorial-decision-making-and-optimization/module1,400dfd1
 deep-learning,2582b90
 fundamentals-of-ai-and-kr/module1,400dfd1
diff --git a/cognition-and-neuroscience/cn.pdf b/cognition-and-neuroscience/cn.pdf
index 33239e3..6fefd6e 100644
Binary files a/cognition-and-neuroscience/cn.pdf and b/cognition-and-neuroscience/cn.pdf differ