August 05, 2004

Bypassing WinEdt registration

WinEdt is a really cool LaTeX editor for Windows. Its evaluation period is one month. When it starts complaining, what you have to do is to delete some entries in the registry and the evaluation period will start all over again. To achieve this, follow the steps:


  • Go to Start->Run... and type regedit to launch the Windows registry editor.
  • In the registry keys tree, select HKEY_CURRENT_USER\Software\WinEdt and delete the two entries named Inst and Install Date.

After this, you won't have to bother for another month. However, if you find the software really useful, you should pay its author the really humble fee and use it without any constraints.

Posted by gpapan at 05:19 PM | Comments (0)

Image Sequences

Posted by gpapan at 04:42 PM | Comments (0)

Cognitive Neuroscience

Some interesting links on cognitive neuroscience, visual illusions etc:


1. Donald D. Hoffman has an interesting book called Visual Intelligence. An abstract from his preface:

"After his stroke, Mr. P still had outstanding memory and intelligence. He could still read and talk, and mixed well with the other patients on his ward. His vision was in most respects normal---with one notable exception: He couldn't recognize the faces of people or animals. As he put it himself, "I can see the eyes, nose, and mouth quite clearly, but they just don't add up. They all seem chalked in, like on a blackboard ... I have to tell by the clothes or by the voice whether it is a man or a woman ...The hair may help a lot, or if there is a mustache ... ." Even his own face, seen in a mirror, looked to him strange and unfamiliar. Mr. P had lost a critical aspect of his visual intelligence."


He also has some examples of visual illusions on his web-site that could be useful at some stage.


2. Semir Zeki's group uses the following methodologies:


  • Functional imaging allows us to obtain pictures of brain activity when the subject is viewing a particular scene, such as a painting.
  • Visual psychophysics is the study of what we see when confronted with various unusual visual displays, such as visual illusions.
  • Single cell physiology enables us to assess the contributions that individual neurons in various parts of the brain make to the task of seeing.

Books by Zeki:


3. The Artist as a Neurologist describes neuro-physiological mechanisms in the way we perceive art. Pay particular attention to

"Furthermore the patient complained of difficulties in following a dialogue because she could not see the movements of the face and, especially, the mouth of the speaker."

Posted by gpapan at 03:17 PM | Comments (0)