121 – Perceptual Systems
In this episode we discuss perception and perceptual systems with Wilson S. Geisler, who is the director of the Center for Perceptual Systems at UT Austin. We discuss perception in general and about approaches used in perception research including neuroscience and computation and modeling. We discuss in some detail Bill’s own field work work on vision and visual perception.
- Wilson S. Geisler
- Center for Perceptual Systems
- CPS Image Enhancement/Filtering Examples
- National Institutes of Health (NIH)
- Perception (WP)
- Cognition (WP)
- Vestibular system (WP)
- Retina (WP)
- Systems neuroscience (WP)
- Neuroprosthetics (WP)
- Image compression (WP)
- MP3 (WP)
- Eye tracking (WP)
- Voltage-sensitive dye (WP)
- Functional magnetic resonance imaging (WP)
- 2-photon Calcium Imaging (WP)
- Cone Cell (WP)
- Cone Cell (WP)
- Ear (WP)
- Otoacoustic emission (WP)
- Matlab Simulink (WP)
- Neural network (WP)
- Psychophysics (WP)
- Prior (WP)
- Soziopod Podcast
- Sociology (WP)
- Constructivism (WP)
- Eye movement (WP)
- Information theory (WP)
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Excellent listen, as an ex-engineering student that has recently switched over to medicine the study of perception intersects nicely between to of my main areas of interest.
As to the question you raised at the end of the episode I’d like to just mention that even though I’m notoriously bad at this feedback thing what you do really is highly appreciated!
While the general science/tech coverage (newspapers , radio, documentaries, podcasts) makes it fairly easy to keep up on stuff outside your own field, I’ve found that’s not really the case when it comes to engineering (suggestions always appreciated!).
It can be hard to find a good balance between depth and accessibility but I think you hit the sweet spot most of the times, the somewhat long format and presupposed knowledge lets you get a better grasp of the subject.
I’d also like to give two thumbs up for more biology/medicine-coverage but maybe I’m biased. ;)
Thanks for the feedback. And yes, I will try to do more biology/medicine stuff in the future. It is a bit harder for me, because I am essentially clueless in the field, and it is hard(er) for me to find good guests.
I wish I could refer you to some though seeing as most of the good resources I’ve found online are American lectures/courses/professors, not seldom Ivy League, I doubt a lowly student and a Swede at that would have much pull, especially considering their presumably busy schedules.
I don’t think you should sell yourself short though. While for example a good grasp of neuroanatomy and a bit of psychology helps in the case of perception, as long as the guest is willing to talk your ear off about his/her field (which they usually are), I think it works out.
Just in case some one else got their interest piqued, Yale has a good intro course on Psychology: http://oyc.yale.edu/psychology/psyc-110
UCSD, Introduction to Sensation & Perception: http://podcast.ucsd.edu/podcasts/default.aspx?PodcastId=1421
VS Ramachandran, a MD/PhD also associated with UCSD, has given a number of talks (a TED one among them) and interviews and is usually both informative and funny.
Interesting philosophical aspects.
Great work! Thank you very much!
There was a fascinating BBC 2 Horizon episode “Do You See What I See?”, addressing the kind of questions Markus asked in the last part of the interview. Unfortunately, it doesn’t seem to available on the Internet any more currently.
Probably the usually copyright reasons why they took it down. Sad.
Great listen indeed!
I just came back to your website recently to discover more of your always interesting podcasts.
Something struck me while listening to this particular one.
W. S. Geisler mentioned that the auditory system has some sort of “amplifier” built into the ear and that it goes sometimes into positive feedback mode – thus emits sounds – while our nervous system would (normally) remove these signals that are generated internally so that you wouldn’t hear the sound produced by your own ear.
Does this has something to do with Tinnitus?
Is it because the nervous system isn’t able to detect/erase these inner signals anymore so that some people hear their own “amplifier”?
It crossed my mind immediately while listening to this part of the podcast so I just wanted to head over here and post a comment.
Hi. I don’t know that this has anything to do with Tinnitus, but it sounds likely. By the way, in our episode on the ear (http://omegataupodcast.net/2011/02/56-audiologie-und-horgerate/) I think the guy talked about the same phenomenon.
Revisiting the podcast about the ear again now.
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