Retinotopy - 8bars with blank

[CerenB]

Dear Vistalab,
I have some trouble to run 8 bars with blank stimuli.
I have the toolbox of vistadisp -- master. When I run the 8 bars with blanks, it presents 2 directions of the bars and then give blank of 12s, repeats it 4 times.
However it cuts the half of the second direction abruptly because of the blanks. Let's say whole duration is 192s (180s stimuli + 12s prescan). It gives 22.5 for the first direction and 10.5s for the second and presents 12s blank. So the second half (22.5s) is divided between the bar and the blank.
Without blank, the script works perfectly.
I've checked the script, makeRetinotopyStimulus_bars.m for the timing of the blanks but fail to change it.

If you have time to tell me which part of the script I should focus on, that would be great.
thank you in advance,
Ceren

[JWinawer]

Could you try running this script, and then posting somewhere the
parameters file (saved on your desktop) and the image matrix (save in
vistadisp/Applications/Retinotopy/standard/storedImagesMatrices/)?

params = retCreateDefaultGUIParams;

params.saveMatrix = '8 bars images.mat';
ret(params)

The parameters file will have a name with the date and time and look
something like this: 20150318T210358.mat
The image matrix will be called '8 bars images.mat'

The stimulus should be comprised of 8 sweeps (4 cardinal and 4 diagonal)
with half of each diagonal replaced by a blank.

Jon

On Wed, Mar 18, 2015 at 7:52 AM, CerenB [email protected] wrote:

Dear Vistalab,
I have some trouble to run 8 bars with blank stimuli.
I have the toolbox of vistadisp -- master. When I run the 8 bars with
blanks, it presents 2 directions of the bars and then give blank of 12s,
repeats it 4 times.
However it cuts the half of the second direction abruptly because of the
blanks. Let's say whole duration is 192s (180s stimuli + 12s prescan). It
gives 22.5 for the first direction and 10.5s for the second and presents
12s blank. So the second half (22.5s) is divided between the bar and the
blank.
Without blank, the script works perfectly.
I've checked the script, makeRetinotopyStimulus_bars.m for the timing of
the blanks but fail to change it.

If you have time to tell me which part of the script I should focus on,
that would be great.
thank you in advance,
Ceren

—
Reply to this email directly or view it on GitHub
#4.

Jonathan Winawer
Assistant Professor of Psychology and Neural Science

New York University
6 Washington Place
New York, NY, 10003
(212) 998-7922 (phone)
(212) 995-4018 (fax)
[email protected]
http://psych.nyu.edu/winawer/

[CerenB]

I ran the script and am attaching the '8 bars images.mat' and
20150319T112317.mat output.

The script works as you mentioned, 8 sweeps (4 cardinal and 4 diagonal)
with half of each diagonal replaced by a blank of 12s. However I think that
is problematic since I want to map all visual field. Because with this
stimuli now I'm not mapping half on the diagonal sweep. So half of the
diagonal directions' will not be presented and cannot be mapped in the
visual cortex.
I thought the script was designed in a way, 1 cardinal (full), 1 diagonal
(full), and 12 second blank at the end. I might be missing something.

thank you for the help,
Ceren

On Thu, Mar 19, 2015 at 2:09 AM, Jonathan Winawer [email protected]
wrote:

Could you try running this script, and then posting somewhere the
parameters file (saved on your desktop) and the image matrix (save in
vistadisp/Applications/Retinotopy/standard/storedImagesMatrices/)?

params = retCreateDefaultGUIParams;

params.saveMatrix = '8 bars images.mat';
ret(params)

The parameters file will have a name with the date and time and look
something like this: 20150318T210358.mat
The image matrix will be called '8 bars images.mat'

The stimulus should be comprised of 8 sweeps (4 cardinal and 4 diagonal)
with half of each diagonal replaced by a blank.

Jon

On Wed, Mar 18, 2015 at 7:52 AM, CerenB [email protected] wrote:

Dear Vistalab,
I have some trouble to run 8 bars with blank stimuli.
I have the toolbox of vistadisp -- master. When I run the 8 bars with
blanks, it presents 2 directions of the bars and then give blank of 12s,
repeats it 4 times.
However it cuts the half of the second direction abruptly because of the
blanks. Let's say whole duration is 192s (180s stimuli + 12s prescan). It
gives 22.5 for the first direction and 10.5s for the second and presents
12s blank. So the second half (22.5s) is divided between the bar and the
blank.
Without blank, the script works perfectly.
I've checked the script, makeRetinotopyStimulus_bars.m for the timing of
the blanks but fail to change it.

If you have time to tell me which part of the script I should focus on,
that would be great.
thank you in advance,
Ceren

—
Reply to this email directly or view it on GitHub
#4.

Jonathan Winawer
Assistant Professor of Psychology and Neural Science

New York University
6 Washington Place
New York, NY, 10003
(212) 998-7922 (phone)
(212) 995-4018 (fax)
[email protected]
http://psych.nyu.edu/winawer/

—
Reply to this email directly or view it on GitHub
#4 (comment).

Ceren Battal
M.Sc Neural and Behavioural Sciences, IMPRS
PhD Student CIMeC- Center for Mind/Brain Sciences
University of Trento
via delle Regole, 101 Mattarello (TN) - 38100 – ITALY
Tel +39 461-282753
Email: [email protected]

[JWinawer]

Dear Ceren,

It sounds like the code runs as intended. Since the bar passes all
locations in the visual field (up to a certain eccentricity), all of these
locations can be mapped by a retinotopic model. The model does not take
into account the direction of motion of the bar. There are no locations
that 'cannot be mapped'.

If you would like to design a different stimulus, I would recommend using
the experiment called 'Experiment from file', in which you store an image
matrix with the images you would like to use, and a parameters file which
includes the timing and order of the images to be shown. This is an option
in the drop down menu of the ret GUI.

Jon

On Thu, Mar 19, 2015 at 6:31 AM, CerenB [email protected] wrote:

I ran the script and am attaching the '8 bars images.mat' and
20150319T112317.mat output.

The script works as you mentioned, 8 sweeps (4 cardinal and 4 diagonal)
with half of each diagonal replaced by a blank of 12s. However I think that
is problematic since I want to map all visual field. Because with this
stimuli now I'm not mapping half on the diagonal sweep. So half of the
diagonal directions' will not be presented and cannot be mapped in the
visual cortex.
I thought the script was designed in a way, 1 cardinal (full), 1 diagonal
(full), and 12 second blank at the end. I might be missing something.

thank you for the help,
Ceren

On Thu, Mar 19, 2015 at 2:09 AM, Jonathan Winawer <
[email protected]>
wrote:

Could you try running this script, and then posting somewhere the
parameters file (saved on your desktop) and the image matrix (save in
vistadisp/Applications/Retinotopy/standard/storedImagesMatrices/)?

params = retCreateDefaultGUIParams;

params.saveMatrix = '8 bars images.mat';
ret(params)

The parameters file will have a name with the date and time and look
something like this: 20150318T210358.mat
The image matrix will be called '8 bars images.mat'

The stimulus should be comprised of 8 sweeps (4 cardinal and 4 diagonal)
with half of each diagonal replaced by a blank.

Jon

On Wed, Mar 18, 2015 at 7:52 AM, CerenB [email protected]
wrote:

Dear Vistalab,
I have some trouble to run 8 bars with blank stimuli.
I have the toolbox of vistadisp -- master. When I run the 8 bars with
blanks, it presents 2 directions of the bars and then give blank of
12s,
repeats it 4 times.
However it cuts the half of the second direction abruptly because of
the
blanks. Let's say whole duration is 192s (180s stimuli + 12s prescan).
It
gives 22.5 for the first direction and 10.5s for the second and
presents
12s blank. So the second half (22.5s) is divided between the bar and
the
blank.
Without blank, the script works perfectly.
I've checked the script, makeRetinotopyStimulus_bars.m for the timing
of
the blanks but fail to change it.

If you have time to tell me which part of the script I should focus on,
that would be great.
thank you in advance,
Ceren

—
Reply to this email directly or view it on GitHub
#4.

Jonathan Winawer
Assistant Professor of Psychology and Neural Science

New York University
6 Washington Place
New York, NY, 10003
(212) 998-7922 (phone)
(212) 995-4018 (fax)
[email protected]
http://psych.nyu.edu/winawer/

—
Reply to this email directly or view it on GitHub
#4 (comment).

Ceren Battal
M.Sc Neural and Behavioural Sciences, IMPRS
PhD Student CIMeC- Center for Mind/Brain Sciences
University of Trento
via delle Regole, 101 Mattarello (TN) - 38100 – ITALY
Tel +39 461-282753
Email: [email protected]

—
Reply to this email directly or view it on GitHub
#4 (comment).

Jonathan Winawer
Assistant Professor of Psychology and Neural Science

New York University
6 Washington Place
New York, NY, 10003
(212) 998-7922 (phone)
(212) 995-4018 (fax)
[email protected]
http://psych.nyu.edu/winawer/

[CerenB]

Oh I see. Thanks!

On Thu, Mar 19, 2015 at 1:26 PM, Jonathan Winawer [email protected]
wrote:

Dear Ceren,

It sounds like the code runs as intended. Since the bar passes all
locations in the visual field (up to a certain eccentricity), all of these
locations can be mapped by a retinotopic model. The model does not take
into account the direction of motion of the bar. There are no locations
that 'cannot be mapped'.

If you would like to design a different stimulus, I would recommend using
the experiment called 'Experiment from file', in which you store an image
matrix with the images you would like to use, and a parameters file which
includes the timing and order of the images to be shown. This is an option
in the drop down menu of the ret GUI.

Jon

On Thu, Mar 19, 2015 at 6:31 AM, CerenB [email protected] wrote:

I ran the script and am attaching the '8 bars images.mat' and
20150319T112317.mat output.

The script works as you mentioned, 8 sweeps (4 cardinal and 4 diagonal)
with half of each diagonal replaced by a blank of 12s. However I think
that
is problematic since I want to map all visual field. Because with this
stimuli now I'm not mapping half on the diagonal sweep. So half of the
diagonal directions' will not be presented and cannot be mapped in the
visual cortex.
I thought the script was designed in a way, 1 cardinal (full), 1 diagonal
(full), and 12 second blank at the end. I might be missing something.

thank you for the help,
Ceren

On Thu, Mar 19, 2015 at 2:09 AM, Jonathan Winawer <
[email protected]>
wrote:

Could you try running this script, and then posting somewhere the
parameters file (saved on your desktop) and the image matrix (save in
vistadisp/Applications/Retinotopy/standard/storedImagesMatrices/)?

params = retCreateDefaultGUIParams;

params.saveMatrix = '8 bars images.mat';
ret(params)

The parameters file will have a name with the date and time and look
something like this: 20150318T210358.mat
The image matrix will be called '8 bars images.mat'

The stimulus should be comprised of 8 sweeps (4 cardinal and 4
diagonal)
with half of each diagonal replaced by a blank.

Jon

On Wed, Mar 18, 2015 at 7:52 AM, CerenB [email protected]
wrote:

Dear Vistalab,
I have some trouble to run 8 bars with blank stimuli.
I have the toolbox of vistadisp -- master. When I run the 8 bars with
blanks, it presents 2 directions of the bars and then give blank of
12s,
repeats it 4 times.
However it cuts the half of the second direction abruptly because of
the
blanks. Let's say whole duration is 192s (180s stimuli + 12s
prescan).
It
gives 22.5 for the first direction and 10.5s for the second and
presents
12s blank. So the second half (22.5s) is divided between the bar and
the
blank.
Without blank, the script works perfectly.
I've checked the script, makeRetinotopyStimulus_bars.m for the timing
of
the blanks but fail to change it.

If you have time to tell me which part of the script I should focus
on,
that would be great.
thank you in advance,
Ceren

—
Reply to this email directly or view it on GitHub
#4.

Jonathan Winawer
Assistant Professor of Psychology and Neural Science

New York University
6 Washington Place
New York, NY, 10003
(212) 998-7922 (phone)
(212) 995-4018 (fax)
[email protected]
http://psych.nyu.edu/winawer/

—
Reply to this email directly or view it on GitHub
<#4 (comment)
.

Ceren Battal
M.Sc Neural and Behavioural Sciences, IMPRS
PhD Student CIMeC- Center for Mind/Brain Sciences
University of Trento
via delle Regole, 101 Mattarello (TN) - 38100 – ITALY
Tel +39 461-282753
Email: [email protected]

—
Reply to this email directly or view it on GitHub
#4 (comment).

Jonathan Winawer
Assistant Professor of Psychology and Neural Science

New York University
6 Washington Place
New York, NY, 10003
(212) 998-7922 (phone)
(212) 995-4018 (fax)
[email protected]
http://psych.nyu.edu/winawer/

—
Reply to this email directly or view it on GitHub
#4 (comment).

Ceren Battal
M.Sc Neural and Behavioural Sciences, IMPRS
PhD Student CIMeC- Center for Mind/Brain Sciences
University of Trento
via delle Regole, 101 Mattarello (TN) - 38100 – ITALY
Tel +39 461-282753
Email: [email protected]