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Publications [#254586] of Christina L. Williams

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Journal Articles

  1. MacDonald, CJ; Cheng, R-K; Williams, CL; Meck, WH (2007). Combined organizational and activational effects of short and long photoperiods on spatial and temporal memory in rats.. Behavioural Processes, 74(2), 226-233. [16971053], [doi]
    (last updated on 2020/09/24)

    Abstract:
    The present study examined the effects of photoperiod on spatial and temporal memory in adult Sprague-Dawley rats that were conceived and reared in different day lengths, i.e., short day (SD-8:16 light/dark) and long day (LD-16:8 light/dark). Both male and female LD rats demonstrated increased spatial memory capacity as evidenced by a lower number of choices to criterion in a 12-arm radial maze task relative to the performance of SD rats. SD rats also demonstrated a distortion in the content of temporal memory as evidenced by a proportional rightward shift in the 20 and 60 s temporal criteria trained using the peak-interval procedure that is consistent with reduced cholinergic function. The conclusion is that both spatial and temporal memory are sensitive to photoperiod variation in laboratory rats in a manner similar to that previously observed for reproductive behaviour.


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