I am conducting a meta-analytic review on the effects of botulinum toxin on emotional outcomes. I am seeking any unpublished studies, data sets, or “in press” papers that include individuals who have received botulinum toxin treatments (i.e., Botox) and measures of emotion (e.g., depression, positive affect, sadness). If you have any unpublished data, or if you have questions/comments, please let me know by February 8th.
See these:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2880828/
https://books.google.co.il/books?hl=en&lr=&id=yp8HWs1zoOMC&oi=fnd&pg=PP1&dq=botox+emotion&ots=Zc8KxpMs8W&sig=LZCvmlbeFt0QtXSbFwkWMUIAgRE&redir_esc=y#v=onepage&q=botox%20emotion&f=false
same recommendation, Dr. Eric Finzi book. This is not very recent, but a good base to start with
Not sure if this is part of your focus but there has been some interesting work examining botox and emotion recognition http://www.cuclasses.com/stat1001/lectures/classnotes/embodiedemotionperception.pdf.
The injections limit emotional expression including micro-expressions that may be instrumental in not only expressing emotion but also understanding other people's emotions. http://ursulakhess.com/resources/HF14.pdf
Over time this break down in emotion communication may impact well-being. There is some interesting corollary work developing concerning hearing impairment and depression. People with hearing impairment have trouble hearing vocal emotions. Over time this deficit may limit emotional experience and bias individuals towards negative interpretations of vocal emotions. These effects are independent of age-related changes to emotion. Article How Hearing Loss and Age Affect Emotional Responses to Nonsp...
An interesting possibility emerging from this work is that impairments in expression and understanding of emotion are intertwined and that sensory or motor deficits may lead over time to depression in individuals with pre-existing vulnerability to depression.
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