Dear Mr. Ali Asghar Moshtagie! Acute oral toxicity for Acrylamide (LD50): 107 mg/kg [Mouse]. Acute dermal toxicity for Acrylamide (LD50): 400 mg/kg [Rat]. For bisacrylamide Oral, mouse: LD50 = 380 mg/kg; Oral, rat: LD50 = 390 mg/kg. Comparing the values of oral toxicity for mouse it can be concluded that Acrylamide is more toxic than bisacrylamide. You can also read about neurotoxicity in article attached. Regards.
Chemical products normally have Material Safety Data Sheet (MSDS), that you can find elsewhere. Find attached the MSDS for the 2 chemicals. There you will find LD50 and others. Also some books like Sax's Dangerous Properties of Industrial Materials ,Hazardous Chemicals Handbook , can help you.