Table 1. Key studies in chronological order that have demonstrated that circadian rhythm disruption elicit memory impairments in rodents.

Study	Animal Sex/Strain/Species	Manipulation Used to Induce Circadian Rhythm Disruption	Behavioural Task Used to Detect Memory Impairment
38	Male albino rats	Photoperiod shifting	Passive avoidance task
7	Male golden hamsters	Natural aging	Appetitive contextual conditioning
45	Male Long-Evans rats	Acute photoperiod shifting	Spatial water task
46	Male Long-Evans rats	Acute and chronic photoperiod shifting	Spatial water task
56	Male and female Siberian hamsters	Light pulse/phase delay	Novel object recognition task
49	C57BL6/J background mice	Cry1Cry2 mutation	Time-place learning task
50	Male C57BL/6 background mice	Per2 mutation	Trace fear-conditioning
48	Male C57BL/6 mice	Photoperiod shifting	Contextual fear conditioning
11	Male C3H/J background mice	Per1 mutation	Spatial radial arm maze
51	Male C57BL/6J background mice	Bmal1 mutation, Clk mutation	Open field context exploration
12	Male C57BL/6 mice	SCN lesions	Contextual fear conditioning and spatial water task
5	Male and Female Long-Evans rats	Chronic photoperiod shifting	Spatial water Task and stimulus response visual discrimination task
57	Female Long-Evans rats	Chronic photoperiod shifting	Appetitive context discrimination
52	Male C57BL/6 background mice	Bmal1 mutation	Contextual fear conditioning and spatial water task
32	Male C3H/HeN background mice	Per1 mutation	Spatial working memory task
6	Male and Female Long-Evans rats	Acute photoperiod shifting	Spatial water Task