【摘 要】
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Prepulse inhibition (PPI) of the startle response is a psychophysiological measure of sensorimotor gating believed to be cross-modal between different sensory s
【机 构】
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University of Sistan and Baluchestan,Douglas Hospital Research Centre,Department of Psychiatry,Depar
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Prepulse inhibition (PPI) of the startle response is a psychophysiological measure of sensorimotor gating believed to be cross-modal between different sensory systems.We analyzed the tactile startle response (TSR) and PPI of TSR (tPPD,using light as a prepulse stimulus,in the mouse strains A/J and C57BL/6J and 36 recombinant congenic strains derived from them.Parental strains were significantly different for TSR,but were comparable for tPPI.Among the congenic strains,variation for TSR was significant in both genetic backgrounds,but that of tPPI was significant only for the C57BL/6J background.Provisional mapping for loci modulating TSR and tPPI was carded out.Using mapping data from our previous study on acoustic startle responses (ASR) and PPI of ASR (aPPI),no common markers for aPPI and tPPI were identified.However,some markers were significantly associated with both ASR and TSIL at least in one genetic background.These results indicate cross-modal genetic regulation for the startle response but not for PPI,in these mouse strains.
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