Responses of Rhesus Monkeys to Reunion after Long-Term Separation: Cross-Sexed Pairings

1974 ◽  
Vol 35 (1) ◽  
pp. 171-174 ◽  
Author(s):  
J. Erwin ◽  
M. Flett
Keyword(s):  
Early Adolescence ◽  
Rhesus Monkeys

12 5½-yr.-o!d rhesus monkeys, 6 of each sex, were reunited with other-sexed peers with which they had been paired for 6 mo. during early adolescence. Responses of Ss to reunion with familiar animals were compared with their responses to pairing with unfamiliar other-sexed peers. The members of familiar pairs had been separated for nearly 2 yr. prior to the reunion described here. Familiar animals never aggressed one another, but males aggressed unfamiliar females. Ss directed more threats toward unfamiliar than familiar animals. Males mounted familiar females more often than unfamiliar ones, but it was apparent that heterosexual attractiveness in general was not based exclusively on familiarity.

scholarly journals A 20-Year Follow-Up Study of Objectively Measured Physical Activity

2021 ◽  
Vol 18 (6) ◽  
pp. 3076
Author(s):  
Anders Raustorp ◽  
Andreas Fröberg
Keyword(s):  
Physical Activity ◽  
Early Adolescence ◽  
Total Sample ◽  
Short Time Span ◽  
Steps Per Day ◽  
Objectively Measured ◽  
Short Time ◽  
Objectively Measured Physical Activity

Background: The objectives of this study were to explore the effect of time, long-term tracking, and the proportion of objectively measured physical activity (PA) from early adolescence to the mid-thirties. Methods: PA was measured as mean steps per day (SPD) with pedometers during 2000 (T1), 2003 (T2), 2005 (T3), 2010 (T4), 2016 (T5) and 2020 (T6). Data from 64 participants (n = 32 males) were analysed from their early adolescence (T1) to their mid-thirties (T6). Results: SPD decreased in the total sample and among males and females (all, p < 0.001). Males took more mean SPD than females during T1 (p = 0.002), whereas females took more mean SPD during T2 (p = 0.009) and T6 (p = 0.008). Males’ mean SPD tracked between T1 and T2 (p = 0.021), T2 and T3 (p = 0.030), T3 and T4 (p = 0.015) and T4 and T5 (p = 0.003). Females’ mean SPD tracked between T3 and T4 (p = 0.024) and T5 and T6 (p < 0.001). In the total sample, more mean SPD were found on weekdays compared to weekend days at T3 (p = 0.017) and T5 (p < 0.001). Conclusions: SPD decreased between T1 and T6. Mean SPD tracked low-to-moderate in the short time span. From late adolescence to the mid-thirties, more mean SPD was observed during weekdays compared to weekend days.

scholarly journals Withdrawal from long-term methamphetamine self-administration ‘normalizes’ neurometabolites in rhesus monkeys: a1H MR spectroscopy study

2013 ◽  
Vol 20 (1) ◽  
pp. 69-79 ◽  
Author(s):  
Shaolin Yang ◽  
Annabelle M. Belcher ◽  
Svetlana Chefer ◽  
D. Bruce Vaupel ◽  
Charles W. Schindler ◽  
...  
Keyword(s):  
Mr Spectroscopy ◽  
Rhesus Monkeys ◽  
Spectroscopy Study ◽  
Self Administration

Acute activation and inactivation of macaque frontal eye field with GABA-related drugs

1995 ◽  
Vol 74 (6) ◽  
pp. 2744-2748 ◽  
Author(s):  
E. C. Dias ◽  
M. Kiesau ◽  
M. A. Segraves
Keyword(s):  
Injection Site ◽  
Rhesus Monkeys ◽  
Frontal Eye Field ◽  
Surgical Removal ◽  
Gamma Aminobutyric Acid ◽  
Eye Field ◽  
Distribution Of Points ◽  
Direction Opposite ◽  
Voluntary Saccades

1. This project tests the behavioral effects of reversible activation and inactivation of sites within the frontal eye field of rhesus monkeys with microinjections of the gamma-aminobutyric acid (GABA)-related drugs bicuculline and muscimol. 2. Muscimol injections impaired the monkeys' ability to make both visually and memory-guided saccades to targets at the center of the area represented by the injection site. The latencies of saccades to targets in regions flanking the injection were increased. For memory-guided saccades, saccades in the direction opposite to that represented by the injection site, were made with shorter latency than controls and often occurred before the movement cue. 3. Bicuculline injections produced irrepressible saccades equivalent to the saccade vector represented by the injection site, often in a staircase of several closely spaced movements. 4. Both substances decreased the accuracy of fixation of a central light. The distribution of points of fixation on different trials was diffuse, and the angle of gaze tended to deviate towards the side of the injection. 5. The results of these acute injections are similiar to those observed in the superior colliculus and are much more substantial than the effects observed in the long term after surgical removal of the frontal eye field. The results of this study promote a central role for the frontal eye field in the generation of all voluntary saccades and in the control of fixation.

LONG TERM EFFECTS OF VASECTOMY ON EXPERIMENTAL ATHEROSCLEROSIS IN RHESUS MONKEYS

1986 ◽  
Vol 64 (6) ◽  
pp. 527-533 ◽  
Author(s):  
Neelam Bansal ◽  
S Majumdar ◽  
NK Ganguly ◽  
RN Chakravarti
Keyword(s):  
Rhesus Monkeys ◽  
Experimental Atherosclerosis ◽  
Long Term Effects

Home cage behavior of rhesus monkeys with long-term deficiency of omega-3 fatty acids

1994 ◽  
Vol 55 (2) ◽  
pp. 231-239 ◽  
Author(s):  
S. Reisbick ◽  
M. Neuringer ◽  
R. Hasnain ◽  
W.E. Connor
Keyword(s):  
Fatty Acids ◽  
Rhesus Monkeys ◽  
Home Cage ◽  
Omega 3 Fatty Acids ◽  
Omega 3

scholarly journals How adolescent health influences education and employment: investigating longitudinal associations and mechanisms

2018 ◽  
Vol 72 (6) ◽  
pp. 465-470 ◽  
Author(s):  
Daniel R Hale ◽  
Russell M Viner
Keyword(s):  
Mental Health ◽  
Substance Use ◽  
Social Exclusion ◽  
Adolescent Health ◽  
Early Adolescence ◽  
Employment Outcomes ◽  
Health Conditions ◽  
Life Chances ◽  
Education And Employment

BackgroundEducation is recognised as a strong determinant of health. Yet there is increasing concern that health in adolescence may also influence educational attainments and future life chances. We examined associations between health in early adolescence and subsequent academic and employment outcomes, exploring potential mediators of these relationships to inform intervention strategies.MethodsWe used data from the Longitudinal Study of Young People in England. Adolescent health was measured at waves 1 and 2. Outcomes included educational attainment at age 16 years and being NEET (not in education, employment or training) at age 19 years. Associations were adjusted for ethnicity, area-level deprivation and early adolescent academic attainment. Where significant associations were identified, we examined the role of hypothesised mediators including attendance and truancy, classroom behaviour, substance use and psychological distress.ResultsHealth conditions in early adolescence predicted poor subsequent education and employment outcomes (ORs ranged from 1.25 to 1.72) with the exception of long-term chronic conditions and NEET status, which were unassociated. The most consistent mediating variable was social exclusion. School behaviour, truancy and substance use were significant mediators for mental health. Long-term absences mediated associations between mental health and physical health and later outcomes.ConclusionsHealth is a key component of academic and vocational achievement. Investment in health is a way of improving life chances. The identification of key mediators such as social exclusion and truancy indicate areas where screening for health conditions and provision of targeted support could improve educational, employment and health outcomes.

Effects of Long-Term Protein Deficiency on Plasma Lipoprotein Concentrations and Metabolism in Rhesus Monkeys

1981 ◽  
Vol 111 (4) ◽  
pp. 733-745 ◽  
Author(s):  
Oscar W. Portman ◽  
Manfred Alexander ◽  
Martha Neuringer ◽  
D. Roger Illingworth ◽  
Syed S. Alam
Keyword(s):  
Rhesus Monkeys ◽  
Plasma Lipoprotein ◽  
Protein Deficiency
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