Laughter is often considered to be the product of humour. However, laughter is a social emotion, occurring most often in interactions, where it is associated with bonding, agreement, affection, and emotional regulation. Laughter is underpinned by complex neural systems, allowing it to be used flexibly. In humans and chimpanzees, social (voluntary) laughter is distinctly different from evoked (i...

Laughter is a highly variable signal, which can be caused by a spectrum of emotions. This makes the automatic detection of laughter a challenging, but interesting task. We perform automatic laughter detection using audio-visual data from the AMI Meeting Corpus. Audiovisual laughter detection is performed by fusing the results of separate audio and video classifiers on the decision level. This r...

There are several beneficial efforts attributed to humor and laughter, including improved immune function, increased pain tolerance, and decreased stress response. Humor therapy, laughter therapy, laughter meditation,and laughter clubs all have unique implications as group programs and as self-management techniques. For practitioners to implement credible programs and effectively teach self-man...

OBJECTIVE To review the beneficial and harmful effects of laughter. DESIGN Narrative synthesis. DATA SOURCES AND REVIEW METHODS We searched Medline (1946 to June 2013) and Embase (1974 to June 2013) for reports of benefits or harms from laughter in humans, and counted the number of papers in each category. RESULTS Benefits of laughter include reduced anger, anxiety, depression, and stress...

Although laughter is important in human social interaction, its role as a communicative signal is poorly understood. Because laughter is expressed in various emotional contexts, the question arises as to whether different emotions are communicated. In the present study, participants had to appraise 4 types of laughter sounds (joy, tickling, taunting, schadenfreude) either by classifying them ac...

Joyful laughter is the only laughter type that has received sufficient validation in terms of morphology (i.e., face, voice). Still, it is unclear whether joyful laughter involves one prototypical facial-morphological configuration (Duchenne Display and mouth opening) to be decoded as such, or whether qualitatively distinct facial markers occur at different stages of laughter intensity. It was ...

Laughter as an every-day, human-specific, affective, nonverbal vocalisation has attracted researchers from many disciplines. One consequence of the multi-disciplinarity is that the way of segmenting the acoustic signal of laughter as well as the terminology are used in a heterogeneous and partially contradictory way. This study tries to analyse the terminological variety from a phonetic perspec...

In this paper, we present the detailed phonetic annotation of the publicly available AVLaughterCycle database, which can readily be used for automatic laughter processing (analysis, classification, browsing, synthesis, etc.). The phonetic annotation is used here to analyze the database, as a first step. Unsurprisingly, we find that h-like phones and central vowels are the most frequent sounds i...

A quick guide to tickling, a form of laughter-evoking play that can be considered as an index of agency, with a discussion of its taxonomic distribution and its possible relationship to traditional measures of self-recognition.

In modern society, fierce competition and socioeconomic interaction stress the quality of life, causing a negative influence on a person's mental health. Laughter is a positive sensation, and seems to be a useful and healthy way to overcome stress. Laughter therapy is a kind of cognitive-behavioral therapies that could make physical, psychological, and social relationships healthy, ultimately i...