Measuring sensation

Warning attraction evokes strong emotions due to

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: tact with the olfactory epithelium • there they are trapped in cilia in the epithelium • epithelia also contains receptor cells/neurons • cilia on surface of receptor cells – there for increased surface area • receptor cells have specifically shaped proteins that bind with specific odour molecules • binding leads to neuronal activation • orthonasal – sniff • retronasal – food in mouth, you chew, volatiles released – travels through back of mouth up into olfactory region Genetics • approximately 250- 750 genes code for olfactory receptors • genes determine shape of receptor cell • each neuron expresses one type of receptor cell Why is smell important? • warning • attraction • evokes strong emotions due to previous experience Sensitivity and Thresholds • age – the older we...
View Full Document

This document was uploaded on 03/09/2014.

Ask a homework question - tutors are online