Subject: | | Questions about inference from one way Anova |
From: | | Atesh Koul <[log in to unmask]> |
Reply-To: | | [log in to unmask][log in to unmask], 6 Oct 2012 16:10:35 -0700674_ISO-8859-1 Hello,
I am interested in using the spm_nlsi_GN.m file to generate a signal in the forward direction. That is by choosing the LFP or ERP model that specifies the differential equations, I should be able to also specify an input, the intrinsic and extrinsic parameters and save the output somewhere. My question is where in the file would I be able to do that? From what I understand, this file is called in order to specify there parameters in order to approximate a recorded signal. I would like to simply plot the generated output. Please email me if I am not explaining something correctly and thanks in advance for your help,[log in to unmask] |
Date: | | Thu, 25 Oct 2012 11:23:51 +0530 |
Content-Type: | | multipart/mixed |
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Dear all,
I want to ask a few questions about making contrasts and drawing
inferences from it. I have three experiments : A , B and C (modeled in 3
different first level SPM models). Experiments A and B contain two factors
with two levels each. Experiment C has a third factor with only one level
(of task type 'Y'). First four tasks in this design belong to a single
type of tasks (Let's say type 'X'). So in total I have five different
tasks (with two types of tasks 'X' and 'Y').
My objective is to find the differences among all the five tasks. The way
I have modeled this is by a one way between subject ANOVA (1x5) with all
the tasks as regressors (design matrix attached).
My questions are:
1. Is this a valid way to do the analysis?
2. Can I use a t-contrast like [0.25 0.25 0.25 0.25 -1] to find
differences between Y and X?
3. Also if I want to compare betas for type 'X' and 'Y', how can I go
about it? (Considering that one way within subject ANOVA doesn't accept
contrasts like [1 0 0 0 0]).
Any help would be appreciated.
Best,
Atesh Koul
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