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Fixed Action Patterns01:06

Fixed Action Patterns

A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
Design Example01:23

Design Example

The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...

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Related Experiment Video

Updated: Jun 12, 2026

Pattern Generation for Micropattern Traction Microscopy
09:26

Pattern Generation for Micropattern Traction Microscopy

Published on: February 17, 2022

Patents patter.

F S Harris

    Applied Optics
    |May 22, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This report highlights recent advancements in optics technology from NASA Tech Briefs. It serves as a resource for the optics community to discover new innovations.

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    Area of Science:

    • Optics and Photonics
    • Aerospace Technology
    • Materials Science

    Background:

    • NASA Tech Briefs serves as a primary source for disseminating technological advancements.
    • The February 1987 issue (Vol. 11, No. 2) contains developments relevant to the optics field.
    • Access to detailed information requires contacting the NASA STI Facility.

    Purpose of the Study:

    • To catalog and present key developments in optics reported in a specific NASA publication.
    • To provide a consolidated overview for researchers and engineers in the optics community.
    • To facilitate further inquiry into specific technological innovations.

    Main Methods:

    • Review and extraction of relevant optics-related information from NASA Tech Briefs.
    • Categorization of reported developments for clarity.
    • Provision of contact information for obtaining further details.

    Main Results:

    • A compilation of optics-related innovations is presented.
    • Specific identifying numbers are associated with each development for easy reference.
    • The report acts as a gateway to more in-depth technical documentation.

    Conclusions:

    • The February 1987 issue of NASA Tech Briefs contains significant information for the optics community.
    • Researchers can leverage these reported developments for future innovation.
    • Direct contact with NASA STI Facility is recommended for accessing full technical data.