Technology Overview
CogniScent's ScenTraK™ technology incorporates two main features:
An array of broadly responsive sensors
Single compounds interact with many broadly-responsive sensors, producing widespread
spatiotemporal patterns of activity in the dye polymer sensors. In CogniScent’s ScenTraK
technology odorants interact with multiple sensors, producing patterns of activation across the
array.
An interrogation platform
These patterns of activity are then interpreted by parallel processing elements in the olfactory areas
of the brain, involving large numbers of neurons at each level of the olfactory pathway. This
distributed process is thought to give rise directly to the broad discrimination ability and fault
tolerance, well-known characteristics of the sense of smell. CogniScent’s ScenTraK™ technology
incorporates this pattern recognition using statistical and algorithmic methods that compare the
sample to known targets in the memory of the device. This comparison enables detection,
identification and discrimination of target compounds within 2-3 seconds of sampling.
There are numerous benefits to this type of sensing technology:
1. The combinatorial nature of identification significantly improves the probability of detection and
lowers the false positive rates, especially in the case of discrimination in the presence of
interferents.
2. The direct sampling of ambient air obviates the need for sample preparation and/or;pre-
concentration, allowing devices to be inexpensive, small and portable.
3. Rapidly-responding sensors and fast processing enable real time detection
CogniScent's ScenTraK™ technology incorporates two main features:
An array of broadly responsive sensors
Single compounds interact with many broadly-responsive sensors, producing widespread
spatiotemporal patterns of activity in the dye polymer sensors. In CogniScent’s ScenTraK
technology odorants interact with multiple sensors, producing patterns of activation across the
array.
An interrogation platform
These patterns of activity are then interpreted by parallel processing elements in the olfactory areas
of the brain, involving large numbers of neurons at each level of the olfactory pathway. This
distributed process is thought to give rise directly to the broad discrimination ability and fault
tolerance, well-known characteristics of the sense of smell. CogniScent’s ScenTraK™ technology
incorporates this pattern recognition using statistical and algorithmic methods that compare the
sample to known targets in the memory of the device. This comparison enables detection,
identification and discrimination of target compounds within 2-3 seconds of sampling.
There are numerous benefits to this type of sensing technology:
1. The combinatorial nature of identification significantly improves the probability of detection and
lowers the false positive rates, especially in the case of discrimination in the presence of
interferents.
2. The direct sampling of ambient air obviates the need for sample preparation and/or;pre-
concentration, allowing devices to be inexpensive, small and portable.
3. Rapidly-responding sensors and fast processing enable real time detection
 | |  | |  | |  | |  |