Rat Strain Differences in Freezing and Sleep Alterations Associated with Contextual Fear

• Published in: Sleep (New York, N.Y.) Vol. 28; no. 10; pp. 1235 - 1244
• Main Authors: Tang, Xiangdong, Yang, Linghui, Sanford, Larry D.
• Format: Journal Article
• Language: English
• Published: Rochester, MN American Academy of Sleep Medicine 01.10.2005
• Subjects: Animals; Behavior, Animal - physiology; Biological and medical sciences; Conditioning (Psychology); Electroencephalography; Electromyography; Fear; Fundamental and applied biological sciences. Psychology; Hypokinesia; Neck Muscles - innervation; Rats; Rats, Inbred F344; Rats, Inbred Lew; Rats, Wistar; Sleep Stages - physiology; Sleep, REM - physiology; Sleep. Vigilance; Social Environment; Vertebrates: nervous system and sense organs; Context; Affect affectivity; Rat; Rodentia; Emotion emotionality; Strain; Fear; Vertebrata; Mammalia; Sleep; Animal; Sleep wake cycle; Tonic immobility; Comparative study

To examine rat strain differences in fear responses and subsequent alterations in sleep associated with contextual fear. Recordings for each strain were obtained of nondisturbed baseline sleep and of sleep after exposure to a novel chamber (handling control). Afterward, the rats were subjected to sh...