|Description||The OCT is based on blocks of four vials (see picture). Four vials (a block) are presented simultaneously to the subject. Only one vial among a block contains an odor. As a basic schedule, the subject must point the odorant vial, with a forced choice when necessary.
|Procedure||The OCT is divided in two parts. The first one is more concerned with Detection and the second one with Identification.
This first part of the test is used to evaluate the olfactory sensibility. It is based on red and blue series, that is to say 12 blocks of four vials. The subject has to answer the question "Which one of the four vial of a block smell the stronger?". The subject begins with the red series (six blocks) and the first block. He smells the first vial of this block, then the second, the third and the last. He tells which vial (A, B, C or D) of the block smell the stronger. He carries on with the second block of the red series, and so on
When he has finished with the five blocks of the red series, he follows the same procedure with the five blocks of the blue series.
This second part of the OCT concerns the ability to identify odors. It is based on the 16 blocks of black series.
|Instructions||Instruction to be read to the subject before testing. The administrator must be sure these have been well understood.
This olfactory test is made up of three series of blocks of four vials. Only one vial among the four contains an odor. You have an answer sheet to indicate your answers.
The test comprises two parts.
1. The first part is designed to evaluate your olfactory sensitivity. There is a red and a blue series. You have to answer the question "Which one of the four vial smell the stronger?".
2. The second part is designed to evaluate your ability to identify odors. You have to answer the two questions "Which one of the four vial contain the odor?" and "What is the odor?".
|Contact||Neurosciences Sensorielles Comportement Cognition
Université Claude Bernard. Lyon 1
50, avenue Tony Garnier
F-69366 Lyon cedex 07
Tel +33 (0)220.127.116.11.00
Fax +33 (0)18.104.22.168.01
|CNRS. UMR 5020. Neurosciences Sensorielles Comportement Cognition|