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Two cases of acoustic schwannoma in a 48-year-old woman and 18-year-old male are reported. Both patients presented with an extremely unusual symptom of pathological laughter as a principal presenting symptom. Complete resection of the tumour via a retrosigmoid route resulted in an immediate resolution of pathological laughter.
All published research examining effects of humor and laughter on physical health is reviewed. Potential causal mechanisms and methodological issues are discussed. Laboratory experiments have shown some effects of exposure to comedy on several components of immunity, although the findings are inconsistent and most of the studies have methodological problems. There is also some evidence of analgesic effects of exposure to comedy, although similar findings are obtained with negative emotions. Few significant correlations have been found between trait measures of humor and immunity, pain tolerance, or self-reported illness symptoms. There is also little evidence of stress-moderating effects of humor on physical health variables and no evidence of increased longevity with greater humor. More rigorous and theoretically informed research is needed before firm conclusions can be drawn about possible health benefits of humor and laughter.
Certain facial displays (typically the human smile) have been found to vary with a situation's sociality. Because the facial display that accompanies laughter is under less voluntary control, it is a stronger test of sociality effects. Participants (N = 162) were videotaped watching a humorous videoclip in 1 of 3 conditions: alone, in a same-sex dyad with a stranger, or in a same-sex dyad with a friend. The frequency and time spent laughing were significantly greater in one or both dyadic conditions than in the alone condition, although no differences existed for self-reported evaluations of the videoclip's funniness or amusement felt. When the self-report measures were controlled for, the dyads of strangers (compared with the alone condition) were associated with the frequency of laughter. Although the results provide further support for sociality effects, the situational demands faced by participants may be a better predictor of facial displays than level of sociality.
The role of laughter during psychotherapy is poorly understood. This study examined 10 unique sessions of psychodynamic psychotherapy with digital videotape and simultaneous measures of skin conductivity (SC) from patients and therapists. Independent observers coded laugh episodes using published criteria. Observers identified 167 laugh responses. Of the 119 patient laughs, 91 (76.5%) were patient as speaker, compared with 28 (23.4%) as nonspeaker audience. In contrast, of the 48 therapist laughs, only five (10.4%) were therapist as speaker, whereas 43 (90.3%) were as nonspeaker audience. The difference was highly significant (p < .001). Physiologic data showed that mean SC level increased regardless of role as patient, therapist, speaker, or audience (p < .001). Two-factor analysis of variance indicated that SC change scores were significantly larger when patients and therapists laughed together compared with laughing alone (p < .05). The results support an empirically based approach to the study of laughter and the use of psychophysiology as a measure of process during psychotherapy.
Laughter syncope is an unusual but recognized form of situational syncope likely to have a similar pathophysiological origin to tussive syncope. There are few case reports of this syndrome in the literature. Patients, as in this case, might present initially to the ED, and laughter should be considered among the numerous differentials for syncope.
Remarkably little is known about the acoustic features of laughter. Here, acoustic outcomes are reported for 1024 naturally produced laugh bouts recorded from 97 young adults as they watched funny video clips. Analyses focused on temporal features, production modes, source- and filter-related effects, and indexical cues to laugher sex and individual identity. Although a number of researchers have previously emphasized stereotypy in laughter, its acoustics were found now to be variable and complex. Among the variety of findings reported, evident diversity in production modes, remarkable variability in fundamental frequency characteristics, and consistent lack of articulation effects in supralaryngeal filtering are of particular interest. In addition, formant-related filtering effects were found to be disproportionately important as acoustic correlates of laugher sex and individual identity. These outcomes are examined in light of existing data concerning laugh acoustics, as well as a number of hypotheses and conjectures previously advanced about this species-typical vocal signal.
A child with associated epileptic laughter and precocious puberty is reported. The significance of epileptic laughter as a possible marker of hypothalamic disease is noted.
Humor and laughter have been thought to be beneficial for thousands of years. Although much has been written on this subject, there is very little written about the actual use of humor in practice. This article reviews the role that humor and laughter may play in medicine in general and palliative care in particular. In addition, it introduces a model that clinicians can follow when trying to introduce humor into their daily encounters with patients.
Research into humour and laughter has indicated that these have psychological, social and physical effects which may have useful applications for patient care. Humour and laughter are potentially useful therapeutic tools but, as yet, little clinical research into their utilization or efficacy has been conducted in the UK.
A 26-year-old male presented with a trigeminal neurinoma manifesting as pathological laughter. After resection of the large tumor, the symptom disappeared completely. Pathological laughter sometimes precedes other manifestations of tumors around the brainstem and may be a useful localizing sign.
The ability to laugh, like other favored behavioral traits, may have evolved over many generations in response to environmental stresses favoring reproduction among successfully adapted people. This speculative overview depicts laughter as a symbolically-triggered release mechanism that unleashes instinctive drive energies associated with survival, in the process lowering anxiety. The use of humor to trigger the laugh reflex has become a cultural activity in which unacceptable impulses are expressed in an acceptable manner. As this occurs, there is an emancipatory release of repressed energies and assorted conflicts are "resolved". An attempt is made to examine the neurological events of laughter; here, there is a suspension of cortical-diencephalic inhibitory control, and tensions are discharged from lower centers, the presumed custodians for some of the encoded programs of instinct and emotion.
Pairs of observers monitored drinking and laughter in groups of social drinkers (N = 56). A significant correlation of .27 was found between units of alcohol consumed and laughter scores.
The relationship among morphologically different forms of smiling and laughter was examined. The participants were 19 Brazilian preschool children. Each child was observed a total of 60 min. in three 10-min. sessions on the playground and three 10-min. sessions in the classroom. Analysis suggests that the various forms of smiling do not simply express different intensities of a single emotion. A two-dimensional structure was indicated by factorial analysis. The first dimension, which could be called playfulness-mock aggression, consisted of a broad smile and laughter. The second dimension, which could be called friendliness-appeasement, consisted of a closed and upper smile. The pattern of correlation found between expressive behaviors and both teacher's and peers' evaluations gives further support to the interpretation that smiling is an heterogeneous category.
Laughter caused by viewing a comic video (Rowan Atkinson's The Best Bits of Mr. Bean) reduced the plasma nerve growth factor, neurotrophin-3 levels, and allergic skin wheal responses in patients with atopic dermatitis, whereas viewing a nonhumorous video (weather information) failed to do so. In contrast, stress induced by writing mail on a mobile phone enhanced the plasma nerve growth factor, neurotrophin-3 levels, and allergic skin wheal responses. However, previewing the comic video counteracted mobile phone-mediated enhancement of plasma neurotrophins or allergic skin wheal responses, whereas previewing the weather information failed to do so. Taken together, these results suggest that, in patients with atopic dermatitis, writing mail on a mobile phone causes stress and enhances allergic responses with a concomitant increase in plasma neurotrophins that are counteracted by laughter. These results may be useful in the study of pathophysiology and treatment of atopic dermatitis.
Patients with various neurologic disorders exhibit exaggerated or inappropriate episodes of laughter, crying, or both without an apparent motivating stimulus or in response to stimuli that would not have elicited such an emotional response before the onset of the underlying disease. During these episodes, patients have difficulty controlling their emotional expression according to the contextual information. In contrast, patients with mood disorders have a pervasive and sustained change in their emotional experience and thus exhibit spells of laughter or crying because of an underlying mania or depression. This article focuses on the clinical presentation, diagnosis, prevalence, and proposed pathophysiological mechanisms of and available treatment options for this clinical phenomenon.
Clinical, radiological and pathological studies in patients with stroke, presenting with pathological laughter as heralding manifestation, have shown lesions in the internal capsule and thalamus, basal ganglion, hypothalamus and ventral pons. In this report a patient with similar manifestation and having a cortical infarct in the territory supplied by superior division of middle cerebral artery is being presented. Our case suggests possible influence of dominant cerebral hemisphere, especially of Broca's area, on the motor control of laughter.
1. There is a humor-health connection; humor is related to wellness and holistic health. Humor and humor skills are becoming increasingly valued assets in the work place. 2. The use of humor among co-workers and administrators serves to form a more cohesive unit and combats the inherent stress in the demanding health care environment. Finding common experiences and frustrations, and reinterpreting them as a group, develops a camaraderie and power over previously difficult situations. 3. Humor and laughter can help us in the workplace and in our personal lives. After you put humor and laughter into your own life, you can take these skills to your patients. You can show them how to use mirth and silliness to live life on life's terms or, said another way, to thrive in adversity by accessing joy in absurdity.
Pathological laughter and crying is a well known clinical phenomenon which in most cases appears in association with diverse neurological and psychiatric symptoms and signs. It is not a disturbance of affectivity but rather of the motor concomitant of affective expression. Its main clinical characteristics are: absence of voluntary control and absence of the corresponding change in mood. It is not accompanied by the emotional lability of the organic brain syndromes, it does not present the inappropriate jocularity of the patients with frontal lobe disturbance, it is not due to the intoxicating effect of alcohol or addictive drugs and there are no typical symptoms of manic syndromes (such as grandiose self-esteem, flight of ideas, hyperactivity, etc.). In this paper three cases of pathological laughter are presented, two of these associated with organic brain conditions. The discussion will deal in particular with aetiological considerations and psychopathology of the third case which was unusual because it was a monosymptomatic condition and seemed to be the expression of a posttraumatic stress disorder.