NVDA is a free screen reader application and voice synthesis tool designed for people that are visually impaired.
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The general idea of this program is to offer solutions to users who are unable to read text on the screen.
With the idea that visually impaired people have different needs, NVDA was designed with a number of features to help out in day-to-day usage of a Windows PC. Namely, the text reader text-to-speech tool with a synthetic voice to read out what's on the screen. Just place your mouse over the text and it will read back what it says. Included with the setup is a large library of different voices to customize the experience.
The installer is also intuitive in that you can use the TTS features of the application during installation because it talks back to you.
Apart from reading back text, NVDA supports braille displays and works fine with braille keyboards.
The application is compatible with all types of keyboards, mice, touch pads and touch screens.
All in all, we're happy to report that this application does offer some benefits for people with vision issues and it may even come in handy for people with perfect vision.
Features and highlights
- Support for popular applications including web browsers, email, internet chatting, and office programs including Word and Excel
- Can be installed directly on to your computer, but it has the ability to run entirely from a USB stick or other portable media
- Built-in speech synthesizer for English and more than 43 other languages
- Reporting of textual formatting where available, such as font name and size, style and spelling errors
- Automatic announcement of text under the mouse and optional audible indication of the mouse position
- Support for many refreshable braille displays
- Easy to use talking installer
NVDA 2020.3 on 32-bit and 64-bit PCs
This download is licensed as freeware for the Windows (32-bit and 64-bit) operating system on a laptop or desktop PC from text to speech software without restrictions. NVDA 2020.3 is available to all software users as a free download for Windows.
The program was created by the developer as a freeware product, but donations for the continued development are highly appreciated. You may generally make a donation via the developer's main web site.
Filed under:- NVDA Download
- Freeware Text to Speech Software
- Screen Reading Software
DETAILS
For more information about the ever expanding amount of published research using our Touch Screen Systems, visit the DOWNLOADS and SCIENCE sections! For more news about the system, check out our news page!
Look to Lafayette Instrument Company for a 'Science above Hardware' approach not found from any other supplier. The fully validated chambers described below are supported by ready to run ABET II Touch Paradigms including images, and a Whisker ® Server-based Controller for up to four test chambers. Plus, we provide the ability for the user to write their own scheduling, with web-based training. ABET II Touch software gives you ease of use, programming power, data analysis, versatility, and flexibility.
- Not just a touch screen, everything about the Bussey-Saksida chamber is different
- Not just another square sheet metal box, the Bussey-Saksida chamber has a unique trapezoidal wall shape to focus the animal's attention and is made from machined parts that simply slot together. The chamber can also be configured to a modular square chamber with panels, levers, lights, and a range of other operator
- This equipment can run both autoshaping and a variety of operant tasks in the same chamber, with chamber configuration from autoshaping to one of the other proven paradigms in seconds Not just a touch screen, this is the ultimate modular chamber for high throughput. For example, do Visual Discrimination and Reversal in the morning and Five Choice Serial Reaction Time Task in the afternoon
- To enable such a high throughput, the chamber can be taken apart and reassembled in seconds for easy cleaning
- Get up and running quickly, with the Easy-Install Kit and buy proven tasks pre-programmed in ABET II Touch or get programming yourself quickly and easily with web-enabled online help from Campden Instruments and Lafayette Instrument Company
- Translational research: test rodents on tasks virtually identical to tasks used to test human populations
- The Bussey-Saksida Chambers and WhiskerServer ® originate from the department of Prof. Trevor Robbins, Experimental Psychology, University of Cambridge, England
TOUCH SCREEN PARADIGMS
Visit DOWNLOADS for videos of these tasks.
- Visual Discrimination and Reversal (VDR)
- Paired Associate Learning (PAL)
- Location Discrimination (LD)
- Visuospatial Conditional Learning (VCL)
- 5-choice Serial Reaction Time Task (5-CSRT)
- Trial-Unique Nonmatching-to-Location (TUNL) [rat only at this time]
- Autoshaping
- Extinction
VISUAL DISCRIMINATION AND REVERSAL TASK (VDR)
Age-related impairments in the R6/2 Huntington's disease mouse model
Morton, Skillings, Bussey & Saksida (2006) Nature Methods
PAIRED ASSOCIATE LEARNING TASK (PAL)
Intra-hippocampal infusions of MK-801 impair performance of the PAL task
But perhaps the most promising data from this task comes from our studies using donepezil, an acetylcholinesterase inhibitor that is a commonly prescribed drug for AD in the UK. Donepezil enhanced performance on PAL in a dose-dependent manner. This result shows that PAL is able to detect cognitive enhancements, as well as impairments.
LOCATION DISCRIMINATION TASK (LD)
Dell Touchpad Driver
McTighe, Mar, Romberg, Bussey & Saksida (2009) NeuroReport
Neurogenesis knock-down impairs pattern separation in the Location Discrimination Task
Clelland, Choi, Romberg, Clemenson, Fragniere, Tyers, Jessberger, Saksida, Barker, Gage & Bussey (2009) Science
Dorsal hippocampal lesions impair pattern separation in the Location Discrimination Task
McTighe, Mar, Romberg, Bussey & Saksida (2009) NeuroReport
AUTOSHAPING
Data from C57/Bl6 mice on the Autoshaping task. A stimulus (white rectangle) is shown on either the left or right of the screen for (usually) 10 seconds. Over trials the animal learns that the CS+ predicts reward and makes increasingly more responses to the CS+, and fewer responses to the CS-.
INCLUDES
Switch From Touchscreen To Touchpad
- Touch Screen
- Chamber Base with non-shock perforated floors
- Trapezodal Walls
- Feeder Reward Area
- Liquid Pump Feeder
- Speaker
- House Light
- White Noise / Tone Generator
- SAC
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