Implicit motives and sexual motivation and behavior

2003 ◽  
Vol 37 (3) ◽  
pp. 224-230 ◽  
Author(s):  
Oliver C. Schultheiss ◽  
Anja Dargel ◽  
Wolfgang Rohde
Endocrinology ◽  
2020 ◽  
Vol 161 (10) ◽  
Author(s):  
Kimberly J Jennings ◽  
Luis de Lecea

Abstract Gonadal hormones contribute to the sexual differentiation of brain and behavior throughout the lifespan, from initial neural patterning to “activation” of adult circuits. Sexual behavior is an ideal system in which to investigate the mechanisms underlying hormonal activation of neural circuits. Sexual behavior is a hormonally regulated, innate social behavior found across species. Although both sexes seek out and engage in sexual behavior, the specific actions involved in mating are sexually dimorphic. Thus, the neural circuits mediating sexual motivation and behavior in males and females are overlapping yet distinct. Furthermore, sexual behavior is strongly dependent on circulating gonadal hormones in both sexes. There has been significant recent progress on elucidating how gonadal hormones modulate physiological properties within sexual behavior circuits with consequences for behavior. Therefore, in this mini-review we review the neural circuits of male and female sexual motivation and behavior, from initial sensory detection of pheromones to the extended amygdala and on to medial hypothalamic nuclei and reward systems. We also discuss how gonadal hormones impact the physiology and functioning of each node within these circuits. By better understanding the myriad of ways in which gonadal hormones impact sexual behavior circuits, we can gain a richer and more complete appreciation for the neural substrates of complex behavior.


2007 ◽  
Vol 87 (3) ◽  
pp. 369-379 ◽  
Author(s):  
Hassan H. López ◽  
Gabriel Wurzel ◽  
Benjamin Ragen

2019 ◽  
Author(s):  
Stephen X. Zhang ◽  
Ethan H. Glantz ◽  
Dragana Rogulja ◽  
Michael A. Crickmore

SUMMARYNewborns and hatchlings of many species perform incredibly sophisticated behaviors, but all vertebrates and many invertebrates selectively abstain from sexual activity at the beginning of life. Hormonal changes have long been associated with adolescence, but it is not clear how these circulating factors create a new motivation and drive its associated behaviors. We show that the transition to sexuality in male Drosophila is controlled by juvenile hormone, which spikes at eclosion and declines over days as the propensity for courtship gradually increases. Juvenile hormone directly inhibits the activity of at least three courtship-motivating circuit elements, ensuring the complete suppression of sexual motivation and behavior. Blocking or overriding these inhibitory mechanisms evokes immediate and robust sexual behavior from very young and otherwise asexual males. These results provide a first example of hormonal changes gating the transition to sexuality by activating latent, but largely developed and functional, motivational circuitry.


2015 ◽  
Vol 74 (1) ◽  
pp. 37-47 ◽  
Author(s):  
Kathrin Heser ◽  
Rainer Banse ◽  
Roland Imhoff

The present study investigated the relationship between explicit and implicit measures of affiliation, power, and achievement motives and behavior as related to social networking sites (SNS) in a sample of 59 participants. SNS appear to be designed to enable social connection via the Internet, so the potential for influence of the affiliation motive seemed self-evident. Additionally, we hypothesized that the power motive drives certain aspects of SNS behavior such that individuals with a high power motive have a larger number of friends and upload more pictures. The results of regression analyses showed that the explicit affiliation motive and the explicit power motive were related to different outcomes of SNS activity. Specifically, the explicit power motive predicted number of friends and number of uploaded pictures, whereas time spent on SNS per day was predicted by the explicit affiliation motive. Only weak evidence was found for an influence of implicit motives on SNS activity.


2018 ◽  
Vol 41 ◽  
Author(s):  
Peter DeScioli

AbstractThe target article by Boyer & Petersen (B&P) contributes a vital message: that people have folk economic theories that shape their thoughts and behavior in the marketplace. This message is all the more important because, in the history of economic thought, Homo economicus was increasingly stripped of mental capacities. Intuitive theories can help restore the mind of Homo economicus.


2019 ◽  
Vol 42 ◽  
Author(s):  
Jeffrey R. Alberts ◽  
Christopher Harshaw ◽  
Gregory E. Demas ◽  
Cara L. Wellman ◽  
Ardythe L. Morrow

Abstract We identify the significance and typical requirements of developmental analyses of the microbiome-gut-brain (MGB) in parents, offspring, and parent-offspring relations, which have particular importance for neurobehavioral outcomes in mammalian species, including humans. We call for a focus on behavioral measures of social-emotional function. Methodological approaches to interpreting relations between the microbiota and behavior are discussed.


Author(s):  
N. David Theodore ◽  
Mamoru Tomozane ◽  
Ming Liaw

There is extensive interest in SiGe for use in heterojunction bipolar transistors. SiGe/Si superlattices are also of interest because of their potential for use in infrared detectors and field-effect transistors. The processing required for these materials is quite compatible with existing silicon technology. However, before SiGe can be used extensively for devices, there is a need to understand and then control the origin and behavior of defects in the materials. The present study was aimed at investigating the structural quality of, and the behavior of defects in, graded SiGe layers grown by chemical vapor deposition (CVD).The structures investigated in this study consisted of Si1-xGex[x=0.16]/Si1-xGex[x= 0.14, 0.13, 0.12, 0.10, 0.09, 0.07, 0.05, 0.04, 0.005, 0]/epi-Si/substrate heterolayers grown by CVD. The Si1-xGex layers were isochronally grown [t = 0.4 minutes per layer], with gas-flow rates being adjusted to control composition. Cross-section TEM specimens were prepared in the 110 geometry. These were then analyzed using two-beam bright-field, dark-field and weak-beam images. A JEOL JEM 200CX transmission electron microscope was used, operating at 200 kV.


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