Can you "hear" flashes of light? Do you have synesthesia? Take a test

The flash gif I can feel my ears reacting as if there was a pressure change whenever the bulb flashes.

Weirdest thing that I get is when I’m laid in bed at night in the dark, I can hear what sounds like voices floating in and out of volume but there’s no discernible words.

2 Likes

Me too, I’m not a Dr. but it seems that a blood pressure change in my head due to the change in optical stimulus is detectable by my ears.

2 Likes

Q. Do you think you have synesthesia? A: Yes, Maybe, Unsure.

What about no?

4 Likes

my synesthesia manifests itself mostly in terms of scents. many aromas generate a sound in my mind. chanel #5 creates the sound of distant tiny bells is my head whereas musks of most sorts create a sound of leather rubbing on leather. while the smell of fresh honeysuckle gives me the impression in the back of my mind of light rain falling nearby.

there are times when certain chord progressions or combinations of sounds give me the impression of small hands touching or stroking my skin.

3 Likes

Doing the tests makes me feel like there’s a foley in my brain

6 Likes

I answered this question with “Unsure”.

After all, this final question, after answering exclusively “0” on all videos, where i never perceived a sound even though I could vividly imagine lots of them, made me feel unsure about the quality of the survey.

3 Likes

That image makes me think of this

In my experience there is a distinct difference between an auditory hallucination (including synaesthesia) and the subvocalised form that can accompany visual perceptions.

The subvocalised form can exist as a kind of non-audial, onomatopoeic or sound-fx commentary, either in the form of cancelled, induced movements in the vocal apparatus or as the merely symbolic formulations that precede the impulse to movement associated with speech.

An audial hallucination is different in quality than the subvocalised form in that you actually hear it.
The hallucination is, of course, different in quality to an externally perceived sound, in that it has no specific source other than that attributed to it by the interaction between imagination and sensorium*, but it shares with the real sound, the quality of actually-being-heard.

Of course, there is a continuum that these poles exist at opposite ends of, and the transition between the two, from symbol to perceptual hallucination, is contiguous to the perceiver.

IME

*and other, less noticeable qualities, like the missing physical sensation in the ears, the wrong quality of internal echo, non-moving source with head movements and a hundred other little details…

1 Like

Seems relevant to me. The gift does not make any noise. You might be able to imagine the noise, but people with synthesis can’take NOT ‘imagine’ it. I’d expect most sensory crossovers involve introducing such relevant impressions where they are ‘missing’, much like optical illusions can cause us to see completed figures made of disjointed sections.

1 Like

You would see light before you could hear it so…

Got as far as plugin not supported.

Do other people hear their voice in their head? I mean this in such a way as right now as I’m typing this - I hear myself saying it in my head, adding in commentary, it’s what I imagine when someone says they are thinking. At the same time I talk to my self - out loud - a lot more than is socially acceptable… Sometimes I carry on a dialogue with myself, internal and external. When people ask me who I’m talking to and I answer myself they just give me “that” look…I always answer with, “Do you sit in silence when you are alone?” I can’t fathom it.

As far as synesthesia goes…I think a true test would be something that you don’t understand to make noise. I mean I hear the sounds in my head simply because I know what is suppose to happen, but I don’t actually hear them. I’ve had an auditory hallucination on a few occasions and I perceive that like a real sound, even as much as my rational mind knows there isn’t a tree growing out of the bathroom floor with fairies flying around it talking to me. (105+ fever…)

2 Likes

I’ve long been of the opinion that most psychiatrists should be replaced by small teams of technicians.

1 Like

Yeah I do that.

1 Like

I actually “hear” a blip in my tinnitus after each flash. It’s really weird that I never noticed it before; perhaps it’s some tiny muscle flexing in response?

Yes. Mostly. I learned to silence my internal narrator when I want to. I can’t type (yet?) without it but anything that doesn’t specifically need words I can work on without my narrator if I focus. I’m not sure there’s any advantage to silencing the inner narrator.

Oh, I just thought of one. I think in words only a bit faster than I talk and if I get hung up on the word it can be pretty slow. Thinking without the narrator can be faster and less halting.

4 Likes

You can disappear down a rabbit hole of working memory here, if I remember correctly.

2 Likes

Had a guy in my unit that had a bit of this. I remember once we were transcribing intercepts in the field and he said, “Could ya turn the lights down? I can’t hear in here!”

2 Likes

I also wonder how much of this exists on a spectrum. That is, there are true synesthetes, people who seem to live “deeply” or connect different senses easily but not all the time or consistently (romantic sorts, I guess), and people who don’t have these experiences. I know someone who is a great example of the last type found the jumping pylons gif above to be “just confusing” and also tends not to have cross-sensory or “deep” experiences.
On the other hand, he says he has very mild number-tactile synesthesia. To him, odds are pointy, evens are smooth. I said, “Well, of course- seven is a a**hole, eight is sort of fat and jovial and nine is this transcendent figure- but only when I think about it for a bit” (an example of the “ease of association/romantic” type).

2 Likes

I have a faint synesthesia that associates colours with letters. Perhaps if I described this, then the other one might make a bit more sense.

I discovered this ages ago in a maths lesson. We were doing parametric equations. I had done a number of the test questions, where the parameter was ‘s’, and suddenly the next question used ‘t’. This gave me a fleeting sensation of ‘the apple green colour has gone and has been replaced by an orangey red’. There was nothing of either colour in my field of vision. The letters themselves were not coloured. There was no sensation of colour hovering around the letters. But somehow, I sensed that they went together. Fascinated, I tried some others. ‘r’ was blue. Some letters had colours, and some didn’t. The letters did not have the same colours when within words. It was pretty subtle for me. If I had not been bored, I probably would have not noticed it.

There is a sort of explanation for this. We have a number of vision centres in our brain. These are made by folding the magnocellular and parvocellular layers like strudel, so you get a number of points where a processing centre that gets the fast, corse-grained data for motion and colour, and the slower fine-detail information. It seems likely that we needed more of these specialised vision centres, so the folding happened again. However, there are processes such as reading, and recognising facial expressions where some centre does not use the colour data at all (black and white TV and movies would not work for faces if this was not so). In these cases, the unused colour side is like an untuned short-wave radio, picking up random stuff and amplifying it, because it has nothing else to do.

How does this work with sound? I have no idea, but there are plenty of people who have associated colours with pitches or timbres in a similar way.

I suspect the obvious action sequences are a control in this experiment. The sounds I heard (if I heard them) were mostly the ones I expected to hear, which is not the random pairing of synesthesia. My exception was the two sequences of light dots against the dark background: those had a noise. This may be what they are looking for.

2 Likes