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Learn Spanish, French, German, Portuguese, Italian and English for free. Sound Analysis Pro — Animal Behavior. Sound Analysis Pro has it's own site now: Click here to download Sound Analysis Pro (it's free) Click here to see publications that used SAP Sound Analysis Pro2011 is a software & hardware system designed specifically to manage the acquisition and analysis of animal vocalization.

Sound Analysis Pro — Animal Behavior

SA+ eliminates much of the efforts involved in maintaining long-term vocal learning experiments, allowing automated acquisition and analysis of large amounts of sound data, scheduled training and on-line monitoring of behavior of several animals simultaneously. SAP2011 is an open code freeware with several options and extensions that can be implemented. Feature summary of SAP2011: SAP2011 can be installed in any Windows computer (XP to Windows 7).

Game of Thrones. Magic Hexagon for Trig Identities. Spike sorting - Scholarpedia. Figure 1: Extracellular recordings are usually done by inserting microwires in the brain.

Spike sorting - Scholarpedia

The signal from the microwire is amplified and band-pass filtered and the firing of the nearby neurons appears as spikes on top of background activity. Spikes are detected using an amplitude threshold and then sorted according to their shapes. For neurons close to the electrode tip -about 50 to 100 microns (Gerstein and Clark, 1964; Buzsaki, 2004)- the signal-to-noise ratio is good enough to distinguish the activity of each single unit (inner circle).

For more distant neurons (outer circle) -up to about 150 microns- spikes can be detected but the difference in their shapes is masked by the noise (multi-unit activity). Spikes from neurons further apart cannot be detected and they contribute to the background noise activity. Spike sorting is the grouping of spikes into clusters based on the similarity of their shapes. Single cell recordings Basic spike sorting methods Figure 2: Window discriminators. MIT 18.06 Linear Algebra Spring 2005. Course Highlights This course features a complete set of video lectures by Professor Gilbert Strang.

MIT 18.06 Linear Algebra Spring 2005

There are also Java applets with sound as well as interactive Java applets. The text for this class is Introduction to Linear Algebra by Gilbert Strang. Course Description This is a basic subject on matrix theory and linear algebra. World Dance New York. Dancing Like There's No Tomorrow: Nancy E. Hussey: 9781449045975: Books.

Do Try This At Home. Scientific experiments do not need to happen in fancy laboratories.

Do Try This At Home

Exploring science can happen at home using inexpensive supplies. Oobleck Oobleck is a non-Newtonian fluid that behaves unlike other fluids. Flowing freely, it behaves as a regular liquid, but when a force is applied, it is more like a solid. If you pick oobleck up with your hands, it will easily flow through your fingers. For this experiment, you will need: 1 part water 2 parts cornstarch Drops of food coloring (there are a few options with this) Combine ingredients and stir.

Oobleck is nontoxic, but does get messy. Precipitation in a Jar: Exploring precipitation at home is quite easy. 200 ml (1 cup) Hot, but not boiling, water Tall glass jar Glass plate Ice cubes Pour the hot water into the clear glass jar and immediately cover with the plate. DNA Extraction DNA can be extracted and examined quite easily. To begin, you will need to choose the source of DNA. Add the plant material, salt, and water to the blender.