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The voice of emotion: an FMRI study of neural responses to angry and happy vocal expressions

The voice of emotion: an FMRI study of neural responses to angry and happy vocal expressions. Tom Johnstone , Carien M. van Reekum , Terrence R. Oakes , and Richard J. Davidson . By Andrew Kisch. Questions.

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The voice of emotion: an FMRI study of neural responses to angry and happy vocal expressions

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  1. The voice of emotion: an FMRI study of neural responses to angry and happy vocal expressions Tom Johnstone, Carien M. van Reekum, Terrence R. Oakes, and Richard J. Davidson By Andrew Kisch

  2. Questions • Are specific neural regions more engaged in the processing of some emotions than others? • How does directed attention towards or away from the expressed emotion affect the associated neural response?

  3. Experiment • Play happy/angry expressive speech for people while showing them greyscale images of happy/angry facial expressions • Both congruent and discrepant sets of emotions • AA, AH, HA, HH • Monitor neurological activity via fMRI • Measures change in blood flow within the brain • Also monitor skin conductance

  4. Congruent vs. Discrepant:Class Experiment Say the color in which the word is written: Congruent: Discrepant:

  5. Congruent vs. Discrepant:Class Experiment Now, try saying word itself:

  6. Congruent vs. Discrepant - Results

  7. Brushing up on the Brain – Part 1 • Middle Temporal Gyrus(MTG) • Involved in the processing of complex auditory stimuli, including music, speech and emotional prosody • Particularly vocal expressions of happiness • Particularly in the right hemisphere

  8. Brushing up on the Brain – Part 2 • Amygdala - Significance detector that alerts other parts of the brain to potentially salient stimuli • Insula - Involved in generating reward-related autonomic responses

  9. MTG Activation

  10. Left Insula Left Amygdala Rostral ACC

  11. Questions For Discussion • Why only right-handed subjects? • What is the best use of this data? • Why isn’t the lateralization consistent? • Improvements?

  12. Thank You!!!

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