Steffen Landgraf

9 Questions 3 Answers 0 Followers

Questions related from Steffen Landgraf

Fatigue Scale in German for Hepatitis patients?

Hi, I am looking for a scale to assess fatigue ("Müdigkeitssyndrom") in German. For example, a validated German version of the "Fatigue Assessment Instrument" (FAI) or the Chalder Fatigue Scale...

26 November 2015 3,063 2 View

How can I transform an SPM r-map into a fisher's z-map?

I would like to do a resting state analysis with SPM and I'm looking for a matlab script to transform an r-map into a fisher z-map.

03 December 2013 7,877 4 View

Are there any self-report questionnaires for visual capacities?

I am looking for questionnaires, where individuals can give information on their visual capacities, such as near/far vision, color vision, stereopsis, visual field etc. and also diseases, such as...

18 October 2013 6,468 6 View

What are examples of acquired visual dysfunctions?

I am looking for examples for acquired visual dysfunctions with regards to accidents and/or diseases. Are these dysfunctions stable, declining, or improving? Do they include blindness or what kind...

03 September 2013 1,776 31 View

What paradigms are there available that administer degraded haptic stimuli?

In visual and auditory (basic-perceptual) paradigms, degradation of stimuli is common. In vision, there are blurring or contrast change available; in audition there are, e.g., high and low pass...

06 August 2013 285 6 View

How can I define "good/bad visual skills"?

I am looking for a way to quantify "visual capacity". In our paper (http://www.frontiersin.org/psychopathology/10.3389/fpsyg.2013.00352/abstract), we define visual capacity as a conglomeration...

15 July 2013 902 3 View

Are there techniques available that can measure the amount of information (e.g., in bit/s) conveyed by the visual (or other cranial) nerves in humans?

I would like to measure how much information is actually leaving the eye/retina towards the optic chiasm, thalamus and/or occipital lobe. Can you think of a tool/method/technique?

06 June 2013 8,855 14 View

Are there haptic (perceptual) tasks that can be easily implemented in a fMRI design?

I would like to perform haptic tasks with blind individuals in a fMRI scanner. Are there any good tasks that are easily implemented in this setting?

21 May 2013 8,947 11 View

In what way are visual impairments, delinquent/criminal behavior and psychosis linked?

In the 1970s and 1980s there was a huge debate about visual deficits in adolescents and how this visual impairment is associated with criminal behavior (Bachara & Zaba, 1978; Broder et al., 1981;...

30 March 2013 4,623 1 View