Essays about: "olfactory detection thresholds"

Showing result 1 - 5 of 8 essays containing the words olfactory detection thresholds.

1. 1. Olfactory sensitivity of human subjects for six predator odorants

   University essay from Institutionen för fysik, kemi och biologi; Tekniska högskolan

   Author : Amir Sarrafchi; [2012]
   Keywords : Human olfactory sensitivity; predator odor; sulfur-containing odorant; sex difference;

   Abstract : The purpose of the present study was to determine olfactory detection thresholds in human subjects for a set of six sulfur-containing odorants which are known to be components of mammalian predator odors. Using a threealternative ascending staircase procedure, the olfactory sensitivity of 12 healthy adult human subjects, 6 males and 6 females was assessed with 2-propylthietane, 2,2-dimethylthietane, 3-mercapto-3-methylbutan-1-ol, 3-mercapto-3- methylbutyl formate, 3-methyl-1-butanethiol, and methyl-2-phenylethyl sulfide. READ MORE

3. 2. Odor sensitivity in CD-1 mice for "green" odors

   University essay from Molekylär genetik

   Author : Sathish kumar Murali; [2011]
   Keywords : CD-1 mice; ―green‖ odors; Odor sensitivity and detection threshold values;

   Abstract : ―Green‖ odors comprise a group of eight structurally related aliphatic alkenals and alkenols which are characteristic for the odor of a wide variety of plant materials. Using an automated olfactometer, the olfactory detection thresholds for ―green‖ odors were determined in six CD-1 mice and compared with that of spider monkeys and human subjects. READ MORE

4. 3. Olfactory detectability of amino acids in the European honeybee (Apis mellifera)

   University essay from Institutionen för fysik, kemi och biologi

   Author : Nellie Linander; [2011]
   Keywords : amino acids; olfaction; Apis melllifera; honeybee; proboscis extension reflex; olfactory detection threshold; classical conditioning;

   Abstract : The honeybee is one of the model species in insect olfaction and its sense of smell is well studied. However, knowledge about the spectrum of odorants detectable to honeybees is limited. One class of odorants that has never been tested so far are the amino acids, which are important constituents of floral nectar. READ MORE

5. 4. Olfactory sensitivity of spider monkeys (Ateles geoffroyi) for "green odors"

   University essay from Institutionen för fysik, kemi och biologi

   Author : Pia Katrine Løtvedt; [2011]
   Keywords : Ateles geoffroyi; green odors ; olfaction; olfactory detection thresholds; spider monkeys;

   Abstract : Primates have traditionally been viewed as having a poorly developed sense of smell. However, in recent years, studies have shown that at least some primate species use olfaction in a number of behaviors, and that they have a high olfactory sensitivity for various chemical classes of odorants. READ MORE

6. 5. Olfactory sensitivity in CD-1 mice for the sperm-attractant odorant bourgeonal and some of its structural analogues

   University essay from Institutionen för fysik, kemi och biologi

   Author : Linda Larsson; [2010]
   Keywords : Aromatic aldehydes; CD-1 mice; olfactory detection thresholds;

   Abstract : Using a conditioning paradigm and an automated olfactometer, I investigated the olfactory sensitivity of five CD-1 mice for seven aromatic aldehydes. With two of the stimuli (3-phenylpropanal and canthoxal), the animals discriminated concentrations as low as 10 ppb (parts per billion) from the odorless solvent and with four of the stimuli (helional, cyclamal, lilial and lyral) they discriminated concentrations as low as 1 ppb, with single individuals even scoring better. READ MORE