927 reputation
310
bio website bangor.academia.edu/…
location Bangor University
age 31
visits member for 2 years, 8 months
seen Dec 5 at 13:26

I am interested in examining face and object recognition as well as the functional organisation of the ventral temporal lobes with masked priming techniques and functional magnetic resonance imaging coupled with multivariate pattern analysis.


Sep
12
comment Why do one's surroundings still seem to rotate when you stop whirling around?
Screw the playground! What would be neat would be to apply TMS to area MT to evoke phosphenes after someone has spun around (eyes open or eyes closed). If the phosphenes are moving in a particular direction then the vestibular system must be influencing the visual signals somehow,
Sep
11
comment Descriptive models of different types of consciousness
You could also look at Stanislas Deheane's model of consciousness, this sets up a taxonomy of mental processes in the brain. However, according to this model, level 1 would map onto subliminal processing, and levels 2 & 3 would map onto conscious processing
Sep
11
comment Descriptive models of different types of consciousness
Basically, the 2nd and 3rd level map onto the measures of conscious awareness; with the 2nd level being an objective measure, and the 3rd level a subjective measure. So what you have is evidence of subconscious emotional evaluation of stimuli in the absence of conscious evaluation. So, in short, level 2 and level 3 are different measures of the same thing, consciousness.
Sep
11
comment Why do one's surroundings still seem to rotate when you stop whirling around?
Are you sitting down on a spinny chair? Close your eyes, spin around and open your eyes. The world still spins even though the your visual system is not adapted to the motion.
Sep
10
comment Why do one's surroundings still seem to rotate when you stop whirling around?
After-effects are not the accepted explanation for dizziness. Also, motion after-effects are rarely observed when the stimulus viewed after adaptation is static, however dizziness is experienced even for static visual input. Indeed, after-effects are much weaker than the dizziness caused by spinning around.
Sep
7
comment Descriptive models of different types of consciousness
Although your question is about theoretical frameworks, I think a more direct answer comes from considering issues surrounding measurement of conscious and subconscious processing. For a theoretical perspective I suggest looking up the sizeable literature concerning conscious and unconscious emotion processing, and possibly the cognition vs emotion literature.
Jun
19
comment Neurotransmitter based imaging techniques
Current resolution is 5mm so it is not that far off EPI resolution anyway. I have spoken to Paul about resolution and he seemed to suggest that it could be improved. Besides it is always possible to improve resolution if you are happy having longer volume acquisition times, or reduced coverage of the cortex.
Jun
19
comment Neurotransmitter based imaging techniques
Yeah, I think it has gotten somewhat better over the years though I'm not too sure - my memory of Paul's presentations is sketchy. I do know that some neurotransmitters can't be distinguished because they are too similar spectrally. I was very surprised since I hand't heard much about it before - it seems to be a very under studied area. I'll update this response once Paul publishes to include more details.