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Nov
28
comment how is tone volume encoded?
Thank you! (comments must be at least 15 characters in length...adding length)
Nov
28
comment Which is the shortest duration for a pitch difference in audio signals to be perceived by the human auditory system?
Can you maybe randomize your script, so that you don't know whether it's presenting two same or two different tones, and then try it on yourself? Although, in my experience I tend to do my tasks much better than others, because I get a lot of practice at tone discrimination while testing my scripts.
Nov
28
comment Which is the shortest duration for a pitch difference in audio signals to be perceived by the human auditory system?
Ah, that's quite a difference indeed.
Nov
27
comment how is tone volume encoded?
When I click on the Kiang reference, a google search window appears?!
Nov
24
comment how is tone volume encoded?
Wonderful! It's so amazing to be able to come here and get an answer that exactly matches the nitty gritty little question I was interested in. Thank you.
Nov
18
comment how is tone volume encoded?
@ChuckSherrington - yeah, I've been thinking about that as well. Feedback connections in a predictive coding type framework would explain sound level adaptation well - if louder tones recruit a new group of neurons. It it's the same neuronal population, I have something interesting to muse about :)
Nov
18
comment how is tone volume encoded?
@ChuckSherrington, I am actually curious because I recently read about sound level adaptation in the auditory nerve, inferior colliculus and medial geniculate body. Sound level adaptation is the following: when a sound is played equiprobably at different volumes, neural activity scales with the volume. But if one of the volumes is more frequent than others, neural activity to that volume will dampen. Now I'm wondering whether a whole new set of neurons is recruited with a change in volume, or not. Given that it was found on the auditory nerve (albeit weakly), probably not. But still...
Oct
26
comment aftereffects of auditory adaptation
I have never heard of this. Thank you so much!
Oct
25
comment aftereffects of auditory adaptation
That's an interesting point, thanks!
Oct
25
comment aftereffects of auditory adaptation
Maybe I should also add that my main area of interest is sensory adaptation, so that is my starting point in asking this question: why does adaptation lead to differences in perceptual aftereffects across the two modalities.
Oct
25
comment aftereffects of auditory adaptation
Thanks for your input! I was indeed thinking about auditory hallucinations as well. They prove that there is such a thing as an auditory percept in the absence of a stimulus. But that makes me even more curious about the absence of auditory aftereffects, whereas visual afterimages can be quite strong and clear.
Aug
22
comment Are there useful applications for three channel consumer EEG?
What an amazing answer!
Aug
18
comment What is the relation between general and linear prediction in espicifice and Evoked Potentials signal behaviour?
What does 'espicifice' mean?
Aug
5
comment Why do dreams lose clarity quickly over time after we awaken?
In case I don't manage to find the time to dig up the reference (I have it somewhere on an external disk, no idea who the authors are): a neurotransmitter that is crucial for transforming short-term into long-term memories is inactive in the hippocampus during sleep. Interestingly, HM, a patient who couldn't achieve long-term memories due to an operation when both hippocampi were removed, described his state as constantly waking from a dream.
Jul
31
comment Diffrence between SSVEP and P300
Interesting stuff! I have indeed also come across some papers where the steady-state response is modulated by top-down factors, so it appears not to be purely stimulus-driven. And a lot of new research shows attention and expectation modulation of sensory components that are quite early. I just have the impression that the consensus is that these modulations are surprising for the SSVEP/AEP, while they are a given for the P3. In fact I don't even know if there is any discernible P3 component in the absence of top-down effects?
Jul
26
comment How does the frequency of a visual stimulus affect the steady-state visually evoked potential?
The refresh rate is the rate at which the image on your screen gets renewed. I think that for most monitors it's 60 Hz. But it's often more complicated than that, because screens often don't refresh the entire image at once (e.g. they might do it line by line, or odd vs. even lines, or center to surround). But some of this flicker would probably be visible in the neural response. I'm not too sure about that though, maybe it's too subtle to be registered as neural activity.
Jul
26
comment How does the frequency of a visual stimulus affect the steady-state visually evoked potential?
By amplitude modulation I mean this. In this picture the carrier signal is the frequency of the tone, whereas the modulating sine wave signal is what I call amplitude modulation. The result is an amplitude modulated signal: it's a tone of a given pitch, that gets louder and softer at the frequency of the modulating sine wave signal. This frequency should also be visible in the neural response.
Jul
23
comment How do laypeople form a judgement that another person is smart or intelligent?
I don't have a reference because I heard it in class long ago, but the professor of the course on intelligence told us that people are fairly accurate (whatever that means) in assessing other people's intelligence - if it's lower or similar to theirs. But they can't make fine grained judgments about people who are more intelligent.
Jun
13
comment How to get more involved with personality psychology as a hobby?
Also, social psychology has a lot to say on why people behave the way they do. The difference is that it talks about general tendencies in behaviour, while personality psychology goes into the differences between individuals, as well as how they self-reflect.
Jun
13
comment How to get more involved with personality psychology as a hobby?
Just a small tip for searching for literature: personality psych also goes under the name of psychology of individual differences, as well as (less often) differential psychology.