Somatosensation / Transduction / Receptors
Receptors
S&G Figure 10.13
Table 10.3
STIMULUS |
RECEPTOR |
LOCATION |
RECEPTIVE FIELD |
ADAPTATION |
| Thermoreception | ||||
Cold |
Free nerve ending |
Superficial |
Small |
Rapid |
Warm |
||||
| Mechanoreception | ||||
Touch, pressure |
Free nerve ending |
Hair root |
Small |
Variable |
Steady pressure, texture |
Merkel receptors |
Superficial |
Slow |
|
Flutter, stroking |
Meissner's corpuscles |
Rapid |
||
Vibration |
Pacinian corpuscles |
Deep |
Large |
Extremely rapid |
Stretch |
Ruffini corpuscles |
Slow |
||
| Nociception | ||||
Mechanical |
Free nerve ending |
Superficial |
Large |
Slow |
Thermal |
Small |
Rapid |
||
Polymodal (esp. chemical) |
Large |
Slow |
||