The effect of emotional arousal on subsequent sexual arousal in men.

The effect of emotional arousal on subsequent sexual arousal was assessed in 14 18–34 yr old men. Ss initially viewed either 1 of 2 emotionally arousing videotapes (depression-and-anger or anxiety-and-anger producing) or a neutral videotape (a travelogue), each of which was followed by an erotic videotape. Sexual arousal was measured physiologically with a penile strain gauge. Although there were no differences in the level of sexual arousal during the antecedent emotionally arousing or neutral videotapes, sexual arousal during the subsequent erotic videotapes was differentially affected by them. Sexual arousal following the anxiety-and-anger videotape was greater than that following either the depression-and-anger videotape or the travelogue. Prior exposure to the travelogue resulted in greater sexual arousal than did the videotape producing depression and anger. (10 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Neural correlates of sexual arousal in homosexual and heterosexual men.

Men exhibit much higher levels of genital and subjective arousal to sexual stimuli containing their preferred sex than they do to stimuli containing only the nonpreferred sex. This study used event-related functional magnetic resonance imaging to investigate how this category-specific pattern would be reflected in the brains of homosexual (n = 11) and heterosexual (n = 11) men. Comparisons of activation to preferred sexual stimuli, nonpreferred sexual stimuli, and sports stimuli revealed large networks correlated with sexual arousal, spanning multiple cortical and subcortical areas. Both homosexual and heterosexual men exhibited category-specific arousal in brain activity. Within the amygdala, greater preference-related activity was observed in homosexual men, but it is unclear whether this is a cause or a consequence of their sexuality. In a subsequent analysis of regions hypothesized to support arousal, both participant groups demonstrated widespread increases in evoked activity for preferred stimuli. Aggregate data from these regions produced significant differences between stimulus types in 16 out of 22 participants. Significant activational differences matched reported sexual orientation in 15 of these 16 participants, representing an advance in psychophysiological measures of arousal. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of alcohol on sexual arousal in women.

During weekly experimental sessions each of 16 university females received in counterbalanced order 4 doses of beverage alcohol prior to viewing a control film and an erotic film. Half of the Ss were instructed beforehand that alcohol would increase their degree of sexual arousal in response to the erotic film; the other half were told that alcohol would decrease their sexual arousal. Measures of vaginal pressure pulse obtained by means of a vaginal photoplethysmograph showed a significant negative linear relation with alcohol doses. A significant Sessions * Instructional Set interaction indicated that Ss in the increase-set condition experienced less sexual arousal. This result is attributed to performance pressure induced by the demand characteristics of the instructional set. Additional measures of sexual arousal, including TAT responses and self-report, showed no differences. With increasing levels of intoxication, however, a greater proportion of Ss reported enhanced sexual arousal. (22 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of alcohol on sexual arousal in male alcoholics.

During successive daily sessions, each of 8 29–44 yr old chronic male alcoholics received, in counterbalanced order, doses of beverage alcohol (.08, .4, .8, and 1.2 g/kg) prior to viewing nonerotic and erotic films. Measures of penile tumescence obtained by means of a penile plethysmograph showed a significant negative linear effect of increasing alcohol doses during the heterosexual and homosexual films. Ss' expectations about the effect of alcohol on sexual arousal and behavior were discrepant with these physiological findings. Consistently, Ss reported that alcohol would have no effect on their sexual arousal or would increase it. Results are discussed with reference to other studies, and it is concluded that penile tumescence is a convenient, reliable, and discriminating measure of male sexual arousal. (27 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of sexual arousal and guilt upon free associative sexual responses.

Studied sexual associations given to double-entendre words in relation to individual differences in sex-guilt and differing degrees of sexual stimulation. The Mosher Incomplete Sentences Test was used as a measure of sex-guilt. Ss were 84 college males. Results indicate a significant effect between sex-guilt and sexual stimulation. The stimulation procedure produced sexual response increments for both high- and low-guilt groups, but only the increment for low-guilt Ss was significant. (16 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of alcohol and expectancy set on male sexual arousal.

Assigned 48 undergraduate males to 8 experimental groups. The 6 Ss within each group received 1 of 4 dose levels (.08, .4, .8, or 1.2 g/kg body weight) of beverage alcohol and 1 of 2 different sets of expectancy instructions regarding sexual arousal. Changes in penile tumescence, in response to an erotic film, were measured physiologically by a mercury-in-rubber strain gauge. Muscle tension levels were also monitored during the film viewing. The following adjunctive measures of sexual arousal were also employed: (a) sexual imagery, (b) the subjective report of arousal, and (c) the estimation of the extent of penile erection. Alcohol significantly reduced the levels of penile tumescence (negative linear relation). The expectancy instructions regarding alcohol's effect did not significantly influence the penile response. Sexual imagery was negatively correlated with penile tumescence, whereas the subjective reports of sexual arousal and the estimations of penile erection were positively correlated with the physiological measure of sexual arousal. Muscle tension levels were not significantly influenced by alcohol or the expectancy set; neither was muscle tension correlated with penile tumescence. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of acute progesterone administration upon responses to acute psychosocial stress in men.

Animal studies suggest that neuroactive steroids, in particular progesterone and its metabolites, have stress-dampening effects. However, few studies have explored these effects in humans. In this study, we investigated the effects of acute progesterone administration on responses to the Trier Social Stress Test (TSST). Healthy men participated in the TSST 3.5 hrs after intramuscular injection of 0, 50, or 100 mg progesterone (N = 16, 14, and 14). We measured cardiovascular (heart rate, blood pressure), hormonal (plasma adrenocorticotrophic hormone, cortisol, and noradrenaline), and subjective (e.g., anxiety, arousal) responses to stress in the three groups. Before the TSST, progesterone injections increased plasma levels without altering physiological or subjective states. Stress produced its expected physiological and subjective effects among placebo-treated individuals. Progesterone 50 mg attenuated peak increases in plasma cortisol and reduced changes in negative mood and alertness after stress, yet it increased plasma noradrenaline and systolic blood pressure. Progesterone 100 mg also attenuated stress-induced increases in alertness and arousal, yet it potentiated stress-induced increases in diastolic pressure. Thus, progesterone dampened some of the psychological effects of stress but produced inconsistent effects on physiological stress responses. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of alcohol and cognitive set on sexual arousal to deviant stimuli.

48 undergraduate male social drinkers were randomly assigned to 1 of 2 expectancy set conditions in which they were led to believe that the beverage they were administered contained alcohol or no alcohol. For half of the Ss in each expectancy condition, the beverage was an alcoholic malt liquor; the others drank a nonalcoholic malt beverage. After their drinks, changes in penile tumescence (PT) in response to normal and deviant tape recordings and to self-generated fantasy were measured physiologically by a mercury-in-rubber strain gauge. The cognitive set (expectancy) significantly increased PT in response to the various erotic recordings. Alcohol did not significantly influence levels of sexual arousal. Ss who believed they had consumed an alcoholic beverage evidenced significantly more arousal to the forcible rape recording and to the sadistic stimuli than Ss who believed that they had consumed a nonalcoholic beverage, regardless of the actual contents of the beverage. The cognitive set, as well as the alcohol, significantly influenced heart rate, skin temperature, and subjective reports of sexual arousal. Self-report measures of sexual arousal were positively correlated with PT. Mosher Forced-Choice Guilt Inventory scores were not significantly correlated with PT, although the Sex Guilt subscore was negatively correlated with the subjective measure of sexual arousal for the heterosexual intercourse and forcible rape tapes. (35 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The psychological and social effects of unemployment.

Discusses some secondary effects of unemployment, including the absence of health benefits at a time when family members are undergoing severe stress, poor nutrition in adults and children that also causes a rise in the infant mortality rate, decrease in parent nurturance of children coupled with an increase in child abuse, increased alcoholism and drug abuse, and erosion of the social service network. These problems are discussed as they pertain to the state of Michigan and its high percentage of unemployed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Impact of caffeine and psychological stress on blood pressure in Black and White men.

Examined the effects of caffeine and psychological stress on systolic blood pressure (SBP) and heart rate (HR) in 40 healthy Black and White male college students (aged 18–35 yrs) who were regular coffee drinkers. Half the Ss had a positive family history of hypertension, and half did not. The effects of 250 mg of caffeine vs placebo (3 mg) in decaffeinated coffee were compared in a within-subject, double-blind, cross-over design. Results confirm previous findings (J. D. Lane and R. B. Williams; see record 1988-19531-001) with White men that a moderate dose of caffeine produced significant increases in SBP and little effect on HR and that the pressor effects of caffeine and stress combined additively (W. Greenberg and D. Shapiro; see record 1988-20603-001). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of sex guilt and sexual arousal on the retention of birth control information.

Tested the notion that high-sex-guilt individuals have difficulty retaining sex-related information. 28 male and 28 female undergraduates were assigned in equal numbers to a high and a low sex-guilt group. Within each group, 1/2 of the Ss were sexually stimulated by reading erotic passages, while 1/2 read neutral passages. All Ss then listened to a lecture on birth control and took an exam based on the lecture. Results indicate that high-sex-guilt Ss retained less lecture information than low-guilt Ss. In addition, sexually stimulated Ss displayed poorer lecture retention than nonstimulated Ss. Across all conditions, females retained more lecture information than males. Results support the hypothesis that guilt-generated anxiety raises arousal past the optimum level necessary for efficient recall performance. Females had a greater interest in learning about birth control than males. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of positive and negative mood on sexual arousal in sexually functional males

A blue light (cryptochrome) photoreceptor from Arabidopsis, cry1, has been identified recently and shown to mediate a number of blue light-dependent phenotypes. Similar to phytochrome, the cryptochrome photoreceptors are encoded by a gene family of homologous members with considerable amino acid sequence similarity within the N-terminal chromophore binding domain. The two members of the Arabidopsis cryptochrome gene family (CRY1 and CRY2) overlap in function, but their proteins differ in stability: cry2 is rapidly degraded under light fluences (green, blue, and UV) that activate the photoreceptor, but cry1 is not. Here, we demonstrate by overexpression in transgenic plants of cry1 and cry2 fusion constructs that their domains are functionally interchangeable. Hybrid receptor proteins mediate functions similar to cry1 and include inhibition of hypocotyl elongation and blue light-dependent anthocyanin accumulation; differences in activity appear to be correlated with differing protein stability. Because cry2 accumulates to high levels under low-light intensities, it may have greater significance in wild-type plants under conditions when light is limited.     

Alcohol, sexual arousal, and self-control.

Investigated the effects of alcohol on self-regulation using delay of gratification for viewing time for an erotic film as the primary dependent measure. Other measures included reflection–impulsivity, locus of control, sexual-guilt scores, and continuous recording of Ss' penile tumescence. Using a balanced placebo design with 50 undergraduate men, Ss were led to believe that they had consumed an alcoholic or a nonalcoholic beverage, and half of each of these 2 groups received either alcohol or tonic water. In addition, the effects of 3 doses of alcohol (placebo, low dose, high dose) were investigated. Instructional set, regardless of drink content, resulted in longer delay times and increased thoughts with sexual content. Although there was no significant relation between increasing dose of alcohol and delay time, there was an interaction between scores on Rotter's Internal–External Locus of Control Scale and alcohol dose. Externalizers showed an inverse linear relation between increasing dose of alcohol and delay time. Internalizers showed the opposite trend. Results support other research showing that expectations about drinking can be more potent predictors of behavior than the pharmacological impact of alcohol. Implications for the self-regulation of sexual behavior under the influence of alcohol are discussed. (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

EEG hemispheric asymmetry during sexual arousal: Psychophysiological patterns in responsive, unresponsive, and dysfunctional men.

Investigated patterns of EEG hemispheric asymmetry and penile tumescence in 12 sexually functional and 6 dysfunctional men. All Ss were aged 31–60 yrs. Six sexually functional Ss were responsive and 6 were unresponsive to laboratory presentations of erotic stimuli. Each S was exposed to a counterbalanced sequence of visual and auditory conditions over 2 sessions of testing. Response measures included bilateral temporal and occipital EEG amplitude integrated over 5-sec epochs, strain gauge measures of penile tumescence, and subjective estimates of arousal. Analysis of the hemispheric laterality results indicated a pattern of right-temporal activation in association with maximum tumescence responses in the high-normal Ss. In contrast, the dysfunctional Ss showed moderate tumescence in response to the visual erotic stimuli but greater right-hemisphere activation in response to the auditory erotic stimuli. These psychophysiological patterns are consistent with the literature on cerebral asymmetry and affective arousal. (38 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A prospective study of psychophysiological arousal, acute stress disorder, and posttraumatic stress disorder.

This study investigated the role of acute arousal in the development of posttraumatic stress disorder (PTSD). Hospitalized motor-vehicle-accident survivors (n?=?146) were assessed for acute stress disorder (ASD) within 1 month of the trauma and were reassessed (n?=?113) for PTSD 6 months posttrauma. Heart rate (HR) and blood pressure (BP) were assessed on the day of hospital discharge. Participants with subclinical ASD had higher HR than those with ASD and no ASD. Participants who developed PTSD had higher HR in the acute posttrauma phase than those without PTSD. Diagnosis of ASD and resting HR accounted for 36% of the variance of the number of PTSD symptoms. A formula composed of a diagnosis of ASD or a resting HR of >90 beats per minute possessed strong sensitivity (88%) and specificity (85%) in predicting PTSD. These findings are discussed in terms of acute arousal and longer term adaptation to trauma. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Alcohol, sexual arousal, and intentions to use condoms in young men: Applying alcohol myopia theory to risky sexual behavior.

Data from 7 studies were aggregated to examine how reported sexual arousal and alcohol intoxication interact to affect attitudes and intentions toward engaging in unprotected sexual intercourse in college-age men (N?=?358). When participants were in a sober or placebo condition, their self-reports of sexual arousal had no effect on their responses. When participants were intoxicated, however, those who felt sexually aroused reported more favorable attitudes, thoughts, and intentions toward having unprotected sex than did those who did not feel aroused. These findings support alcohol myopia theory (C. A Steele & R. A. Josephs, 1990), which states that alcohol intoxication restricts attentional capacity so that people are highly influenced by the most salient cues in their environment. It is suggested that sexual arousal is a powerful internal cue that interacts with alcohol intoxication to enhance attitudes and intentions toward risky sexual behaviors. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of anxiety arousal and mental stress on the vestibulo-ocular reflex

Although the subjective reports of patients suggest that anxiety may aggravate vertigo and imbalance, there has been little research into how anxiety might directly affect balance system functioning. We conducted two studies to examine the effect of anxiety and arousal on the vestibulo-ocular reflex (VOR). In the first study, pre-lest fear ratings were obtained from 20 normal subjects and 36 anxious subjects immediately prior to rotation and caloric testing. Fear ratings were significantly correlated with the maximum slow-phase velocity (SPV) of nystagmus induced by caloric testing. In the second study, we assessed the VOR response to rotation of 36 normal subjects under 3 task conditions: a) minimal alerting (counting backwards during rotation), b) physical arousal (induced by exertion prior to rotation); c) mental arousal (induced by performance of stressful mental tasks during rotation). Both the physical and mental tasks induced a significant increase in heart rate compared with the alerting condition. The maximum SPV of the nystagmus induced by rotation was significantly greater during performance of the mental task than in the other two conditions. These combined results indicate that anxiety may influence the gain of the VOR.     

Expectancies, alcohol, and sexual arousal in women.

A total of 40 university female volunteers, all social drinkers aged 18–35 yrs, were randomly assigned to 1 of 2 expectancy conditions in which they were led to believe that the beverage they were administered contained either vodka and tonic or tonic only. For half the Ss in each expectancy condition, the beverage actually contained vodka; for the other half, tonic only. After their drinks, measures of vaginal pressure pulse obtained with a vaginal photoplethysmograph were recorded during a nonerotic control film and 2 erotic films depicting a heterosexual or a homosexual interaction. The 2 groups that received alcohol, regardless of whether they believed that their drinks contained alcohol, showed significantly reduced sexual arousal during both erotic films. No effects of expectancy or an interaction between alcohol and expectancy were obtained. Ss' subjective estimates of intoxication were significantly correlated with their self-report of sexual arousal during both erotic films. The differences between these results and previous findings using similar procedures with male social drinkers are discussed. (31 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Subjective sexual arousal to films of masturbation.

A film of a male or female masturbating was viewed by 96 male and 102 female undergraduate volunteers. Following the film, Ss responded to 3 measures of subjective sexual arousal and to 7 measures of affective responses. Males reported the highest level of sexual arousal to the female film and the lowest level of arousal to the male film. Males who viewed the film of the male masturbating reported the most disgust, depression, guilt, and shame. Females were sexually aroused by both films. Women who masturbated more frequently reported more sexual arousal to the films than the other 3 groups. A measure of negative attitudes toward masturbation differentiated the sexual arousal and affective responses of Ss. Sex guilt (measured by the Sex Guilt subscale of the Mosher Forced-Choice Guilt Inventory) was related to negative affective responses to the films. Several interpretations of the meaning of the data are offered. (40 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)