Subjects: Psychology >> Cognitive Psychology submitted time 2019-09-09
Abstract： Predictive coding is arguably one of the most important mechanisms to explain the interactions between the brain and the complex environment. Indeed, one of the main functions of sensory system is to predict upcoming events, which is vital for survival. Take auditory modality for instance. The neural responses to sound repetition and auditory change, such as mismatch negativity (MMN) and stimulus-specific adaptation (SSA), can be explained under a predictive coding view. As a theoretical framework, predictive coding is now facing some unresolved questions and challenges. However, combining human and animal studies under this framework will provide an excellent chance to investigate the neural mechanisms of auditory processing.
Subjects: Psychology >> Other Disciplines of Psychology submitted time 2019-02-14
Abstract： Pre-attentive processing is a cognitive process that takes place before attention and is independent of consciousness. It reflects the unconscious, automatic aspects of brain processing. Mismatch negativity (MMN) is the most commonly used indicator of pre-attentive processing. MMN amplitude reduction has emerged as one of the important clinical indices for psychiatric diseases such as schizophrenia and depression. The main research paradigms of MMN include oddball paradigm and multi-feature paradigm. Music training has dramatic effects on the structure and function of human brains, such as increasing grey matter volume and improving attention and memory functions. Music training also has a significant impact on MMN, which is reflected in the paradigms constructed by different acoustic features. Future research should compare the impacts of oriental music and western music on MMN, explore a more ecologically valid research paradigm, and reveal the impact and mechanism of music training on MMN in the elderly. "
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