The Role of Vision in the Emergence of Mate Preferences

Repeated exposure to physiologically effective doses of contraceptive hormones ethinyl estradiol or levonorgestrel do not alter the reinforcing effects of a brief visual stimulus in ovary-intact rats

Estradiol and progesterone potentiate and attenuate reward processes, respectively. Despite these well-characterized effects, there is minimal research on the effects of synthetic estrogens (e.g., ethinyl estradiol, or EE) and progestins (e.g., levonorgestrel, or LEVO) contained in clinically-utilized hormonal contraceptives. The present study characterized the separate effects of repeated exposure to EE or LEVO on responding maintained by a reinforcing visual stimulus. Forty ovary-intact female Sprague-Dawley rats received either sesame oil vehicle (n = 16), 0.18 μg/day EE (n = 16), or 0.6 μg/day LEVO (n = 8) subcutaneous injections 30-min before daily one-hour sessions. Rats' responding was maintained by a 30-sec visual stimulus on a Variable Ratio-3 schedule of reinforcement. The day after rats' last session, we determined rats estrous cycle phase via vaginal cytology before sacrifice and subsequently weighing each rat's uterus to further verify the contraceptive hormone manipulation. The visual stimulus functioned as a reinforcer, but neither EE nor LEVO enhanced visual stimulus maintained responding. Estrous cytology was consistent with normal cycling in vehicle rats and halting of normal cycling in EE and LEVO rats. EE increased uterine weights consistent with typical uterotrophic effects observed with estrogens, further confirming the physiological impacts of our EE and LEVO doses. In conclusion, a physiologically effective dose of neither EE nor LEVO did not alter the reinforcing efficacy of a visual stimulus reinforcer. Future research should characterize the effects of hormonal contraceptives on responding maintained by other reinforcer types to determine the generality of the present findings.

Developing cortex is functionally pluripotent: Evidence from blindness

How rigidly does innate architecture constrain function of developing cortex? What is the contribution of early experience? We review insights into these questions from visual cortex function in people born blind. In blindness, occipital cortices are active during auditory and tactile tasks. What 'cross-modal' plasticity tells us about cortical flexibility is debated. On the one hand, visual networks of blind people respond to higher cognitive information, such as sentence grammar, suggesting drastic repurposing. On the other, in line with 'metamodal' accounts, sighted and blind populations show shared domain preferences in ventral occipito-temporal cortex (vOTC), suggesting visual areas switch input modality but perform the same or similar perceptual functions (e.g., face recognition) in blindness. Here we bring these disparate literatures together, reviewing and synthesizing evidence that speaks to whether visual cortices have similar or different functions in blind and sighted people. Together, the evidence suggests that in blindness, visual cortices are incorporated into higher-cognitive (e.g., fronto-parietal) networks, which are a major source long-range input to the visual system. We propose the connectivity-constrained experience-dependent account. Functional development is constrained by innate anatomical connectivity, experience and behavioral needs. Infant cortex is pluripotent, the same anatomical constraints develop into different functional outcomes.

What potential traits do adolescents and early adults look for in mate preferences?

There are universal sex differences in mate preferences. Mostly, women will prioritize greater financial prospects, but men will emphasize physical attractiveness. However, we know little about whether these preferences remain stable in adolescence and early adulthood. The study examines whether these universal differences between men and women in mate preferences can be found in Bangladesh and whether these differences are constant among adolescents and early adults. An online survey was conducted by using a structured close-ended questionnaire to collect data from males and females who were aged no more than 30, yet to be married, had at least a secondary education, and belonged to any religious faith. A total of 2017 people, 1059 males and 958 females, participated in the survey. Independent Samples t-tests were estimated to compare the mean scores of the traits of interest, while Principal Component Analysis (PCA) was used to reduce the dimensions to outline the possible factors that affect mate preferences. The results show that women of Bangladesh prioritize greater financial prospects, whereas men emphasize traits related to fertility and reproduction. However, unlike the universal trend, having a similar religious background is among the top-two priorities of both males and females. Factor-wise differentiation indicates that, compared with males, females emphasize attachment and sociability. In addition, adolescent females put greater emphasis on refinement and neatness, mutual attraction-love, and desire for home and children than early adult females. Compared with adolescent males, early adult males were found emphasizing more on having kind and understanding mates. Therefore, results support universal sex differences, but religion, culturally-defined gender roles, and social environment also affect mate preferences; sometimes people require making some trade-offs between preferences depending on the sociocultural context.

Do we enjoy what we sense and perceive? A dissociation between aesthetic appreciation and basic perception of environmental objects or events

This integrative review rearticulates the notion of human aesthetics by critically appraising the conventional definitions, offerring a new, more comprehensive definition, and identifying the fundamental components associated with it. It intends to advance holistic understanding of the notion by differentiating aesthetic perception from basic perceptual recognition, and by characterizing these concepts from the perspective of information processing in both visual and nonvisual modalities. To this end, we analyze the dissociative nature of information processing in the brain, introducing a novel local-global integrative model that differentiates aesthetic processing from basic perceptual processing. This model builds on the current state of the art in visual aesthetics as well as newer propositions about nonvisual aesthetics. This model comprises two analytic channels: aesthetics-only channel and perception-to-aesthetics channel. The aesthetics-only channel primarily involves restricted local processing for quality or richness (e.g., attractiveness, beauty/prettiness, elegance, sublimeness, catchiness, hedonic value) analysis, whereas the perception-to-aesthetics channel involves global/extended local processing for basic feature analysis, followed by restricted local processing for quality or richness analysis. We contend that aesthetic processing operates independently of basic perceptual processing, but not independently of cognitive processing. We further conjecture that there might be a common faculty, labeled as aesthetic cognition faculty, in the human brain for all sensory aesthetics albeit other parts of the brain can also be activated because of basic sensory processing prior to aesthetic processing, particularly during the operation of the second channel. This generalized model can account not only for simple and pure aesthetic experiences but for partial and complex aesthetic experiences as well.

The psychosocial experiences of girls with visual impairment about the ideal spouse and marriage

Mate choice is one of the biggest psychological, social, and emotional changes in the life of every human being. This issue is associated with challenges and problems for people especially blind and visual impairment (VI) people. Although marriage leads to many changes and transformations in the life of blind and VI people, it is essential for meeting psychological, social, emotional, and sexual needs. Accordingly, this study aimed to analyze the psychosocial experiences of VI girls about the ideal husband and marriage. This qualitative study was conducted with a descriptive phenomenological approach. The data were collected through targeted interviews with 20 single girls with VI who were members of the White Cane Society of Tehran in 2021. The collected data were analyzed using Colaizzi’s seven-step method. Four main themes were extracted from the participants’ experiences, including “experience of love and freedom,” “criteria for selecting an ideal spouse,” “fear and worry about the marriage,” and “stigma and strict public judgments.” Following the findings of the study, it can be argued that paying attention to the experience of girls with VI can shed light on their criteria for mate choice and marriage and clarify their needs and demands. This perspective helps mental health professionals and rehabilitation counseling experts to meet their needs through social welfare planning and family awareness programs.