7 国際: 2017年2月アーカイブ
Title: The Asymmetrical Influence of Timing Asynchrony of Bass Guitar and Drum Sounds on Groove
Journal(書誌情報）:Music Perception: An Interdisciplinary Journal, Vol. 34 No. 2, December 2016; pp. 123-131.
doi:10.1525/mp.2016.34.2.123
論文URL:http://mp.ucpress.edu/content/34/2/123
Abstract: Groove is a pleasant feeling that compels people to move their bodies along with music. In the past, there was some consensus among both musicians and researchers that the main factor in inducing this feeling is onset asynchrony of sounds. However, recent studies have asserted that no-asynchrony is the condition that will obtain the highest groove. The current study examined whether no-asynchrony exclusively elicits the highest groove. In Experiment 1, we measured the groove increment of a backbeat drum pattern as a function of the asynchronies between bass guitar and hi-hat cymbal sounds. Upon evaluation, the scores of no conditions exceeded those of the synchronous condition. However, the condition with slight bass guitar precedence over the hi-hat achieved an approximately equal score to the condition with complete synchrony, and that score was higher than the ones achieved with bass delay. In Experiment 2, we measured the participants' sensitivities to timing
discrimination. The results confirmed that the amount of bass precedence in Experiment 1 was perceptible to the listeners. These findings suggest that complete synchronization is not always the best condition to achieve groove and that listeners prefer perceivable asynchronies in some cases.
著者Contact先の email: soyogu[at]hus.osaka-u.ac.jp [at]を@に変換してください
日本語によるコメント: 本研究は，「音楽のグルーヴ感（音楽に合わせて体を動かしたくなる感覚）を最大にするためには複数楽器間の発音タイミングが一致している方が良いのか，ややズレている方が良いのか」，という議論に対して，心理物理学的手法でアプローチしました。結論は，「ズレはそれだけでグルーヴを明確に増幅するものではなさそうだが，ズレている条件が好ましい場合もある」，というやや折衷的なものになりました。（松下）
本夏は8月25日（金）－27日（日）と京都女子大学において、音楽の科学的研究をテーマとする
学際的な国際学会として、The 6th Conference of the Asia-Pacific Society for the Cognitive Sciences
of Music（第6回アジア・太平洋音楽認知科学協会国際大会 APSCOM 6）を開催いたします。
この度、一般発表（口頭・ポスター）の申込締切が2週間延長され、以下のようになりました。
・一般発表申込締切：2017年2月28日（火）
（ウェブサイト：http://apscom2017.org/）
この機会に、当該分野にご関心のある皆様に奮ってご参加、ご発表いただけますようお願い申し上げます。
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APSCOM 6事務局
http://www.apscom2017.org/
e-mail: apscom2017[at]jsmpc.org [at]を@に変えて下さい
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Authors: Takumi Kaneda, Yayoi Shigemune, Takashi Tsukiura
Title: Lateral and medial prefrontal contributions to emotion generation by semantic elaboration during episodic encoding
Journal(書誌情報）: Cognitive, Affective and Behavioral Neuroscience, 17: 143-157, 2017.
doi: 10.3758/s13415-016-0468-6
論文URL: http://link.springer.com/article/10.3758%2Fs13415-016-0468-6
Abstract: Memories for emotion-laden stimuli are remembered more accurately than those for neutral stimuli. Although this enhancement reflects stimulus-driven modulation of memory by emotions, functional neuroimaging evidence of the interacting mechanisms between emotions generated by intentional processes, such as semantic elaboration, and memory is scarce. The present fMRI study investigated how encoding-related activation is modulated by emotions generated during the process of semantic elaboration. During encoding with fMRI, healthy young adults viewed neutral (target) pictures either passively or with semantic elaboration. In semantic elaboration, participants imagined background stories related to the pictures. Encoding trials with semantic elaboration were subdivided into conditions in which participants imagined negative, positive, or neutral stories. One week later, memories for target pictures were tested. In behavioral results, memories for target pictures were significantly enhanced by semantic elaboration, compared to passive viewing, and the memory enhancement was more remarkable when negative or positive stories were imagined. fMRI results demonstrated that activations in the left inferior frontal gyrus and dorsal medial prefrontal cortex (dmPFC) were greater during the encoding of target pictures with semantic elaboration than those with passive viewing, and that these activations further increased during encoding with semantic elaboration of emotional stories than of neutral stories. Functional connectivity between the left inferior frontal gyrus and dmPFC/hippocampus during encoding significantly predicted retrieval accuracies of memories encoded with self-generated emotional stories. These findings suggest that networks including the left inferior frontal region, dmPFC, and hippocampus could contribute to the modulation of memories encoded with the emotion generation.
著者Contact先の email: tsukiura.takashi.6c[at]kyoto-u.ac.jp（月浦 崇） [at]を@に置き換えてください
