Why there is illusion of black line in the middle of isoluminescence gray display?

05 May 2018 0 9K Report

When presenting a unified gray display, strongly illuminated, an illusion of dark line in the middle of it is present. Can one explain why? Is it another instance of lateral inhibition or is it something that goes beyond that?

Badges
Science topic

More Gilad Sabo's questions See All

What are proper tasks to estimate executive functions and resourcefulness in children?

Just wonder, What can be proper and validated task to evaluate in children aged 8-11 and adolescents aged 12-14 1. Executive functions. 2. Resourcefulness. 3. Initiation. Now, I know there are...

07 August 2016 4,675 4 View

What statistical analysis should I use?

Hi all, Just wanted to ask If I test how IVs A,B,C,D, E, F predict depended variable Y and given that: . A is point in time (before or after manipulation). B is the group to which participants...

06 July 2016 938 4 View

Any script to use R for ridge regression?

Hi, Till now I used SPSS but now I started using R and currently I am trying to run ridge regression. In my data I have five IVs. two of them are actually covariates (age and sex). The other three...

06 July 2016 6,719 5 View

What regression should I use to compare between correlations over time?

Hi, I have two different questions and would thank for anyone who can try help with them: 1. If I used intervention program to facilitate some skills. I measured these skills before and after the...

06 July 2016 3,642 4 View

How to continue with test that have low Cronbach's alpha?

Hi all, I'm using one scale with only three questions. It's creative uses questionnaire so the more adequate uses one count for each question the higher the score is for this question. The...

06 July 2016 5,404 10 View

How to interpret forward regression results?

Hi, I had forward regression with five variables to predict one dependent variable (say general knowledge score). My main independent variable was entered alone to the model in the first step with...

05 June 2016 4,785 13 View

How to continue after stepwise regression ?

Hi all, I completed stepwise regression analysis on 3 creativity tests as predictors with the dependent variable being wellbeing score. The prediction model was reached after 2 steps, first...

05 June 2016 5,761 8 View

Can two strongly correlated variables appear differently on stpwise regression model?

Hi, Is it possible that two strongly correlated independent variables ( r between them= 0.91) that correlate very similarly with the depended variable (r =0.29 and r= 0.28) appear differently on...

05 June 2016 5,605 6 View

What is the normal range of correlation between elaboration and fluency sub scales in TTCT like creativity tests?

Just wanted to know if anyone have reference to review on that matter that sum the results of significant body of research. Both elaboration and fluency are sub scales in most creativity tests....

05 June 2016 1,344 0 View

What tables should I present when reporting on stepwise regression in APA style?

Hi, Just wanted to know what tables I should include and what should be in each of them when reporting on stepwise regression results in APA style. And which table I should present first, second,...

05 June 2016 9,744 1 View

Is skin yellowness an numerical or ordinal variable?

I have a response variable called skin yellowness, which I will measure via a scored color chart, whereby 1 is pale yellow and 15 is orange. I'm not sure if this counts as an ordinal variable,...

11 August 2024 4,793 1 View

Text-Communication from the M1 Hand Area using BCI—and then there is Elon Musk?

Willett, Shenoy et al. (2021) have developed a brain computer interface (BCI) that used neural signal collected from the hand area of the motor cortex (area M1) of a paralyzed patient. The...

10 August 2024 7,180 0 View

Is it possible to plot the atom-projected band structure using GPAW?

Hi, I'm currently working on a project where I need to plot the atom-projected band structure using GPAW. I've been able to calculate the band structure for my material, but I'm having trouble...

07 August 2024 269 3 View

Why does everyone use vs code?

Visual Studio Code (VS Code) has become a popular choice among developers for several reasons: 1. **Free and Open Source**: VS Code is free to use and open source, making it accessible to...

07 August 2024 7,013 4 View

Can't spin-orbit coupling(SOC) be included in optical properties calculation in CASTEP?

I am currently using CASTEP version 2020. When I want to run optical properties calculations with spin-orbit coupling(SOC), I encounter the following error in a pop-up window before the job gets...

02 August 2024 2,890 0 View

Creating an Automaton/Using Language as the Model?

As animals learn a task, they become more reliant on their long-term memories as compared to the real-time sensory information to guide behavioral performance (Ahilan et al. 2018). This process...

31 July 2024 9,859 0 View

What Are the Best Alternatives to the MTT Assay for Assessing Cell Toxicity of Colored Herbal Extracts?

I am currently investigating the cytotoxicity of a series of herbal extracts, and like many studies, I have been using the MTT assay to evaluate cell viability. However, I am encountering a...

31 July 2024 193 4 View

Simulation of metal drawing by Abaqus with UMAT?

Hello, colleagues. Recently, I have been working on a metal processing simulation with my UMAT in Abaqus. I have outlined the corresponding simulation, but I keep encountering issues that cause...

30 July 2024 7,062 1 View

Why applying a saved template of a bar chart in a different/new one doesn't take effect in SPSS?

Using SPSS, I made my edits in one bar chart — e.g., font type and size, hiding grid lines, and colours, namely: blue, orange, green, purple, and grey for 5 bars, respectively, etc. — and I saved...

29 July 2024 1,981 1 View

How to estimate sample size for GWAS of continuous and discrete traits? What are the pre-requisites?

Genome-wide association study (GWAS) Continuous traits: eg. Height Discrete traits: eg. Eye color

28 July 2024 286 0 View