Mediation of the photoperiodic effect on grooming reflexes by glucocorticoid hormones and serotonin.

Johnson, Ralph F.; Randall, Walter

doi:10.1037/0735-7044.97.2.195

Cited by 9 publications

(5 citation statements)

References 21 publications

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“…The food intake data were obtained on two groups of cats, a normal group and a group with pontile lesions. The pontile lesion has been described in detail (e.g., Johnson & Randall, 1983; Lakso & Randall, 1969; Randall, 1964; Randall & Liittschwager, 1967). In brief, the pontile lesion is an anodal dc lesion, made with a stereotaxically placed surgical grade stainless steel electrode (a Kirschner wire).…”

Section: Methodsmentioning

confidence: 99%

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Circadian rhythms in food intake and activity in domestic cats.

Randall¹,

Johnson²,

Randall³

et al. 1985

Behavioral Neuroscience

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Daily patterns of food intake and activity were determined for normal cats and cats with pontile lesions. Food intake in the dark and in the light of LD (light/dark) cycles were determined separately by weighing the food, and a "percentage nocturnal" score was calculated. The measure of activity was infrared photobeam interruptions, with the photobeam placed in front of the cages, over the food bowl. No differences between normal cats and cats with pontile lesions were detected for any of the measures. Food intake of cats was influenced by simulated starlight and moonlight conditions and by the presence of humans. Cats in isolation from humans and human noises exhibited random patterns of activity in constant light and free-running circadian rhythms in constant dark. Idiosyncratic differences in entrainment to LD cycles were found among cats, and the relevance of this variability is noted for studies of photoperiodic phenomena in this species.

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Section: Methodsmentioning

confidence: 99%

“…The size of the receptive field for grooming reflexes in cats with pontile lesions is regulated by photoperiod (Johnson & Randall, 1983; Randall, 1981), and in most instances of photoperiod regulation, the circadian system is involved (e.g., reviewed by Pittendrigh, 1981). Thus we have an interest in the circadian system of cats.…”

mentioning

confidence: 99%

Circadian rhythms in food intake and activity in domestic cats.

Randall¹,

Johnson²,

Randall³

et al. 1985

Behavioral Neuroscience

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“…This four month rhythm was systematically related to other four montn rhythms in the cat, e.g., food intake, body weight , and thyroid activity (Randall & Liittschwager, 1967). The environmental event that controls these rhythms is photoperiod or some concomitant of photoperiod Randall, 1981;Johnson & Randall, 1983).…”

Section: Introductionmentioning

confidence: 87%

An abnormal annual rhythm in adrenaline excretion and grooming reflexes in cats with pontile lesions

Parsons

Randal

1986

Journal of Interdisiplinary Cycle Research

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Cats with pontile lesions exhibit grooming reflexes (e.g., the scratch reflex), and the receptive field for the grooming reflexes (the area on the body surface whose stimulation elicits the grooming reflexes) systematically varies in size, exhibiting long-term rhythmic changes during a year. Several lines of evidence suggested that the rhythms in adrenaline may be altered in the cats with lesions and underlie the changes in the size of the receptive field. Therefore, the size of the receptive field for grooming reflexes and adrenomedullary function (as measured by the urinary excretion of adrenaline) were monitored for one year in eight normal cats and six cats with pontile lesions. Periodic regression, analysis of variance, and correlational methods revealed a lesion-induced change in the annual adrenaline rhythm. No changes in amplitude or overall mean value were detected, but the annual peak in adrenaline excretion occurred approximately four months late, in June instead of February. The abnormality in the adrenaline rhythm was inversely and significantly correlated with the size of the receptive field for the grooming reflexes. Chronopathological changes in rhythmic parameters are discussed as important considerations in the behavioral abnormalities which appear following lesions of the central nervous system.

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“…Complete details (and a photograph of the outline drawing) have been presented (Trulson, Nicolay, & Randall, 1975). Reliable estimates of the size of the receptive field are obtained with this method; for example, in one study, a mean of 30.10%, with a standard error of 0.24%, was obtained with repeated measures (Johnson & Randall, 1983).…”

Section: Grooming Reflexes and Convulsionsmentioning

confidence: 99%

Grooming reflexes and Brown-Séquard epilepsy in cats with pontile lesions.

Randall¹,

Randall²,

Johnson³

1985

Behavioral Neuroscience

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The literature on the relation between the scratch reflex and Brown-Séquard epilepsy in the guinea pig indicates that the scratch reflex is a stimulus-induced myoclonus that is the first component of a complete seizure. Cats with pontile lesions and cats with frontal neocortical lesions exhibit the scratch reflex and other grooming reflexes. The grooming reflexes in cats with pontile lesions develop over a period of a year or more into complete seizures that are similar to Brown-Séquard epilepsy as described for the guinea pig by Brown-Séquard and others. Cinematographic analyses revealed that the scratch reflex in cats with pontile lesions and in cats with frontal neocortical lesions has the same frequency and the same complex spatial and temporal pattern as normal scratching behavior. In addition, the myoclonus of the complete seizures is identified as the scratch reflex, representing a very vigorous and long-lasting afterdischarge. Reconstruction of the pontile lesions indicate that the lateral and rostral portions of the paralemniscal tegmental fields were destroyed along with portions of the pontile gray and pyramidal tract.

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Mediation of the photoperiodic effect on grooming reflexes by glucocorticoid hormones and serotonin.

Cited by 9 publications

References 21 publications

Circadian rhythms in food intake and activity in domestic cats.

Circadian rhythms in food intake and activity in domestic cats.

An abnormal annual rhythm in adrenaline excretion and grooming reflexes in cats with pontile lesions

Grooming reflexes and Brown-Séquard epilepsy in cats with pontile lesions.

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