Attenuated nociceptive behavior in rats with learning impairment.

<p><b>A</b>, <b>C</b>) The development of thermal hyperalgesia (A) and mechanical allodynia (C) was attenuated in Aβ-injected rats. <b>B</b>, <b>D</b>) No differences were detected in thermal (B) and mechanical (D) nociceptive threshold on contralateral hind paw in all groups. * <i>P</i><0.05, ** <i>P</i><0.01, as compared with baseline threshold of the same group. FWL: foot-withdrawal latency. #<0.05, # # <i>P</i><0.01, as compared with each of the remaining groups at the same time point.