The neurophysiological mechanisms underlying mismatch negativity (MMN) can be inferred from an examination of some of the brain generators involved in the process of this event-related potential (ERP) component. ERPs were recorded in two studies in which the subjects were involved in a selective dichotic listening task. Subjects were required to silently count rare stimuli deviating in pitch from a sequence of standard stimuli in one ear, while ignoring all the stimuli (standards and deviants) delivered randomly to the other ear. The results showed that, in all cases, the negative wave elicited by the deviant stimuli showed the highest amplitudes over the right hemiscalp irrespective of the ear of stimulation or the direction of attention. Scalp radial current density analysis showed that this asymmetric potential distribution could be attributed to the sum of activities of two sets of neural generators: one temporal, located in the vicinity of the primary auditory cortex, predominantly activated in the hemisphere contralateral to the ear of stimulation, and the other frontal, involving mainly the right hemisphere. The results are discussed in light of Näätänen's model: we suggest the dissociation of two functional processes on the basis of activity of distinct brain areas: a sensory memory mechanism related to the temporal generators, and an automatic attention-switching process related to the frontal generators.

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We tested the hypothesis of a role of gamma-range synchronized oscillatory activity in visual feature binding by recording evoked potentials from 12 subjects to three stimuli: two coherent ones (a Kanizsa triangle and a real triangle) and a non-coherent one (a Kanizsa triangle in which the inducing disks had been rotated so that no triangle could be perceived). The evoked potentials were analysed by convoluting the signal for each subject and each stimulation type by Gabor wavelets centred from 28 up to 46 Hz, providing a continuous measure of frequency-specific power over time. A first peak of activity was found around 38 Hz and 100 ms with a maximum at electrode Cz in each experimental condition. A second peak of activity occurred around 30 Hz and 230 ms, with a maximum at O1 in response to the real triangle and a maximum at Cz in the case of the illusory triangle. At 100 ms we did not find any variations of the gamma-band component of the evoked potential with stimulation type, but the power of the 30 Hz component of the evoked potential between 210 and 290 ms differed from noise only in the case of a coherent triangle, no matter whether real or illusory. We thus found a 30 Hz component whose power correlates with stimulus coherency, which supports the hypothesis of a functional role of high-frequency synchronization in feature binding.(ABSTRACT TRUNCATED AT 250 WORDS)

These findings reveal that pitch deficits can hinder the recognition of emotions conveyed by musical pieces, while also highlighting the (at least partial) dissociation between emotion recognition and emotion intensity evaluation. Our study thus sheds light on the complex interactions between perceptual and emotional networks in the brain, by showing that impaired central auditory processing partially alters musical emotion processing. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

The interest in physical activity and vacations has created a growth in the tourism industry and has greatly modified strategies within the industry. Sport tourism is expanding and many forms of consumption exist within this area. The object of this study is to propose a new framework for analysing sport tourism consumption. This framework illustrates that consumer choices depend upon vacation destinations and sport services offered in relation to the experiences that vacationers are seeking. The originality of this analysis is that it integrates spatial and social dimensions stemming from environmental psychology, ethnology and sociology.

International audienceWe draw theoretical support from the concept of customer participation and cognitive dissonance theory to investigate the moderating effects of the preference-related belief of nature-based tourists, that is, the New Environmental Paradigm (NEP), on relationships between tourist experiential components and outcomes. The responses of 500 visitors to the Yangmingshan National Park, Taiwan indicate that actively participative experiences (APEs)-that is, education and escapism-are more positively related than passively participative experiences (PPEs)-that is, entertainment and esthetics-to pleasure and memorability. Furthermore, tourists' NEP appears to reinforce the effects of APEs and to weaken the effects of PPEs. We also found that tourists' NEP has a stronger reinforcing effect than a weakening effect. Our study contributes further evidence to current insights into the importance of tourists' participation in co-creating value of tourist experiences

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