Bookmarked Visual and auditory brain areas share a representational structure that supports emotion perception by Beau Sievers, Carolyn Parkinson, Peter J. Kohler, James M. Hughes, Sergey V. Fogelson, Thalia Wheatley (Current Biology)
Emotionally expressive music and dance occur together across the world. This may be because features shared across the senses are represented the same way even in different sensory brain areas, putting music and movement in directly comparable terms. These shared representations may arise from a general need to identify environmentally relevant combinations of sensory features, particularly those that communicate emotion. To test the hypothesis that visual and auditory brain areas share a representational structure, we created music and animation stimuli with crossmodally matched features expressing a range of emotions. Participants confirmed that each emotion corresponded to a set of features shared across music and movement. A subset of participants viewed both music and animation during brain scanning, revealing that representations in auditory and visual brain areas were similar to one another. This shared representation captured not only simple stimulus features but also combinations of features associated with emotion judgments. The posterior superior temporal cortex represented both music and movement using this same structure, suggesting supramodal abstraction of sensory content. Further exploratory analysis revealed that early visual cortex used this shared representational structure even when stimuli were presented auditorily. We propose that crossmodally shared representations support mutually reinforcing dynamics across auditory and visual brain areas, facilitating crossmodal comparison. These shared representations may help explain why emotions are so readily perceived and why some dynamic emotional expressions can generalize across cultural contexts.
This portends some interesting results with relation to mnemonics and particularly songlines and indigenous peoples’ practices which integrate song, movement, and emotion.

Preprint: https://www.biorxiv.org/content/10.1101/254961v4

Beau Sievers in “New work published today in Current Biology Visual and auditory brain areas share a representational structure that supports emotion perception With @ThaliaWheatley @k_v_n_l @parkinsoncm @sergeyfogelson (thread after coffee!) https://t.co/AURqH9kNLb https://t.co/ro4o4oEwk5” / Twitter ()

Watched Play this Game! The Elusive Letter G by Len Turner (Johns Hopkins Office of Communications) from Johns Hopkins University | YouTube

Researchers at Johns Hopkins University say most participants in a study couldn't pick out the correct form of lowercase g, a letter shape most of us have seen millions of times. Play this game to find out if you can spot the right g.

👓 rapid eye movement from dominique o’brien | General Memory Chat | Art of Memory Forum

Read rapid eye movement from dominique o'brien (Art of Memory Forum)
Hi, in a TV-show about all kinds of crazy world records I saw dominique o’brien memorising 50 objects that were placed on some kind of running track. When he was doing this, his eyes moved from side to side in a very fast pace. This reminded me of an incredibly smart IT-guy (I felt like Forrest Gump in comparison) that came to our warehouse to implement a new computer system. If he was asked a very difficult question he would look up in the air and his eyes would behave precisely like those o...

Possibly tangentially related:

  • If you sit on a swivel chair (safer than doing the same thing standing up) and gently place your fingertips on your closed eyes while you turn around and around, you’ll be able to discern that your eyes will still exhibit saccadic movement even though you can’t “see” anything. (Not sure if this is true for the blind, but it’s worth considering who this may not be true for and why.)
  • Rapid Serial Visual Presentation methods for speed reading (Spritz and related apps) work well primarily because they limit saccadic eye movements which take up a proportionally large portion of your reading time. (Ultimately I think there is an upper limit to how fast one can read and comprehend and retain information.)
  • The visual systems of chickens are responsible for their odd walking manner in which they throw their heads forward and then move their body underneath them while their head remains stationary. Essentially while their head is moving, they’re “blind”.

Is it possible that saccades of the eye are tied into our visual processing and memory systems in a manner deeper than we’re consciously aware? Does reading on a page help our comprehension or long term memories more because the words have a location on a page versus RSVP reading methods? Do our mental visualizations (imagination) change depending on these visual/reading methods? What effects to these have on our memories?

Some interesting questions worth pondering/researching.