![Observing monkey behavior – cracking the nut observing-monkey-behavior](https://www.noldus.com/static/images/core-blog/observing-monkey-behavior.jpg)
Observing monkey behavior – cracking the nut
We already know some monkeys display above average intelligence. One way by which we can tell is their use of tools. Studies have shown that capuchin monkeys use boulders and logs as anvils upon which they can crush nuts.
![Zebrafish with Parkinson's zebrafish-parkinsons-research](https://www.noldus.com/static/images/core-blog/zebrafish-parkinsons-research-1581603048.jpg)
Zebrafish with Parkinson's
Parkinson’s Disease (PD) is one of the main neurodegenerative diseases and many researchers are involved in investigating this disease and developing treatments
![Connects some dots - cognitive impairment and cranial radiation cognitive-impairment-cranial-radiation](https://www.noldus.com/static/images/core-blog/cognitive-impairment-cranial-radiation.jpg)
Connects some dots - cognitive impairment and cranial radiation
On a yearly basis, an estimated 20.000 individuals are diagnosed with primary brain tumors in the United States alone. About ten times that number of patients will receive treatment for primary or metastatic brain cancer.
![Beautiful birds and UV – What we cannot see beautiful-birds-and-uv-what-we-cannot-see](https://www.noldus.com/static/images/core-blog/beautiful-birds-and-uv-what-we-cannot-see.jpg)
Beautiful birds and UV – What we cannot see
Don’t we all enjoy the variety and intensity of bird colors? Male birds have perhaps the most impressive color display in nature.
![How to get reliable results on object recognition using video tracking object-recognition-automated-video-tracking](https://www.noldus.com/static/images/core-blog/object-recognition-automated-video-tracking.jpg)
How to get reliable results on object recognition using video tracking
In the beginning of this year I wrote a post about the Morris water maze test, a popular and well-validated paradigm to study learning and memory in rats and mice.
![Zebrafish tracking to uncover subtle effects of embryonic alcohol exposure zebrafish-tracking-embryonic-alcohol-exposure](https://www.noldus.com/static/images/core-blog/zebrafish-tracking-embryonic-alcohol-exposure.jpg)
Zebrafish tracking to uncover subtle effects of embryonic alcohol exposure
Zebrafish are not the first species one might think of as being exposed to alcohol in their natural environment.
![Why it is smart to test your animal in its home cage home-cage-testing](https://www.noldus.com/static/images/core-blog/home-cage-testing.jpg)
Why it is smart to test your animal in its home cage
Behavior of laboratory rodents is often studied in well-controlled, simple experiments, in an environment that is fundamentally different from the animal’s home cage.
![Optogenetics and operant conditioning optogenetics-and-operant-conditioning](https://www.noldus.com/static/images/core-blog/optogenetics-and-operant-conditioning.jpg)
Optogenetics and operant conditioning
A great example of optogenetics in behavioral studies is the work of Dr. Kravitz and Dr. Kreitzer at the Kreitzer lab (currently, Kravitz works at the NIDDK in Bethesda). Let me tell you about it.
![Video tracking and a bug repellant stronger than DEET video-tracking-bug-repellant](https://www.noldus.com/static/images/core-blog/video-tracking-bug-repellant.jpg)
Video tracking and a bug repellant stronger than DEET
Last year the news was hitting the internet: The Zwiebel lab (Vanderbilt University, Nashville, Tennessee, USA) may have found a new bug repellant that is stronger than DEET.
![Optogenetics - Shining a light on brains and behavior optogenetics](https://www.noldus.com/static/images/core-blog/optogenetics.jpg)
Optogenetics - Shining a light on brains and behavior
Brains are complicated. We all know that. Like an entangled bunch of wires. Still, over the years, neuroscientists have been able to map out several brain regions and their functions in behavior and physiology.