November 2009
10 posts
The difference between T2 and T2*
Adapted from an amazing book entitled Introduction to Functional Magnetic Resonance Imaging: Principles and Techniques (2nd Ed) by Richard B. Buxton (one of my MRI professors at UCSD!):
T2 The individual dipoles that sum up to produce the transverse magnetization are not precessing at precisely the same rate
As a water molecule tumbles due to thermal motions, each H nucleus feels a small,...
Quick Neuroscience Overview Text
Syntax Highlighter in tumblr
Step 1. Open your tumblr customize window to Theme
Step 2. Enable custom HTML
Step 3. In between </head> and <body> paste the following code:
<link href='http://alexgorbatchev.com/pub/sh/current/styles/shCore.css' rel='stylesheet' type='text/css'/>
<link href='http://alexgorbatchev.com/pub/sh/current/styles/shThemeDefault.css' rel='stylesheet' type='text/css'/>...
anger = reality - utopia
scribbled on the back of a journal article, a great conversation brought me to this conclusion last night
implications:
reality = utopia + anger
there is utopia inherent in reality, but it is overshadowed by anger
utopia = reality - anger
the way to restore utopia is to remove anger
anger = reality - utopia
anger is a function of reality (ie. the current state of the world)
note: the goal...
Axial View of an Anorexic Subject's Brain
MP-Rage Sequence from a GE system 1.5T Preprocessed -> Exported via AFNI
Xploding Plastix - Funny Bones & Lazy Legs
...
Human Contact Increases Performance
Having contact with your beneficiary (the person who is benefiting from your hard work) has a positive effect on how hard you work.
A simple study entitled “Impact and the art of motivation maintenance: The effects of contact with beneficiaries on persistence behavior” has shown that between 3 groups of workers:
test: had real contact with their beneficiary (phone or meeting)
...
Projects
Things I’m working on:
MRI physics and data analysis course
Reprogramming my hand-grip software for a new (secret) use
Synesthesia paper(s)
Programming a wireless EEG
Drawing ROIs in AFNI really well for DTI analysis with DTI-CINCH
Emotional biofeedback sensors
Effort Related Decision-Making
my honors thesis is on this, and dear jeebus it is moving slow
Here’s what I understand:
detailed neural pathways from the frontal regions -> the striatum -> motor cortex
the effects of submliminal motivation, incentive, and arousal
the effects of neuroleptics
how to measure it with a grip device
Here’s what I need to learn:
the psychology of motivation
how...