Thermoception

thermosensationtemperature sensecold temperatureheatheat pitsperception oftemperaturetemperature sensationthermalthermal perception
Thermoception or thermoreception is the sense by which an organism perceives temperature, or more accurately, temperature differences inferred from heat flux.wikipedia
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Sense

sensesfive sensessensory
Thermoception or thermoreception is the sense by which an organism perceives temperature, or more accurately, temperature differences inferred from heat flux.
The ability to detect other stimuli beyond those governed by these most broadly recognized senses also exists, and these sensory modalities include temperature (thermoception), kinesthetic sense (proprioception), pain (nociception), balance (equilibrioception), vibration (mechanoreception), and various internal stimuli (e.g. the different chemoreceptors for detecting salt and carbon dioxide concentrations in the blood, or sense of hunger and sense of thirst).

Ciliopathy

ciliopathiesciliopathicciliary defects
Ciliopathy is associated with decreased ability to sense heat, thus cilia may aid in the process.
These primary cilia play important roles in chemosensation, mechanosensation, and thermosensation.

Cilium

ciliaciliatedciliary
Ciliopathy is associated with decreased ability to sense heat, thus cilia may aid in the process.
Some primary cilia on epithelial cells in eukaryotes act as cellular antennae, providing chemosensation, thermosensation and mechanosensation of the extracellular environment.

Temperature

temperaturesair temperaturewarm
Thermoception or thermoreception is the sense by which an organism perceives temperature, or more accurately, temperature differences inferred from heat flux.

Transient receptor potential channel

transient receptor potentialTRPtransient receptor potential channels
Transient receptor potential channels (TRP channels) are believed to play a role in many species in sensation of hot, cold, and pain.
Thermo-TRP channels have a C-terminal domain that is responsible for thermosensation and have a specific interchangeable region that allows them to sense temperature stimuli that is tied to ligand regulatory processes.

Infrared sensing in snakes

pit organdetection of infrared radiationfacial pits
A particularly specialized form of thermoception is used by Crotalinae (pit viper) and Boidae (boa) snakes, which can effectively see the infrared radiation emitted by hot objects.

Organism

organismsflora and faunaliving organisms
Thermoception or thermoreception is the sense by which an organism perceives temperature, or more accurately, temperature differences inferred from heat flux.

Heat flux

thermal fluxheat densityflux
Thermoception or thermoreception is the sense by which an organism perceives temperature, or more accurately, temperature differences inferred from heat flux.

Vertebrate

Vertebratavertebratesvertebral
Vertebrates have at least two types of sensor: those that detect heat and those that detect cold.

Pit viper

pitviperCrotalinaepit vipers
A particularly specialized form of thermoception is used by Crotalinae (pit viper) and Boidae (boa) snakes, which can effectively see the infrared radiation emitted by hot objects.

Boidae

boaboasboid
A particularly specialized form of thermoception is used by Crotalinae (pit viper) and Boidae (boa) snakes, which can effectively see the infrared radiation emitted by hot objects.

Common vampire bat

Desmodus rotundusvampire batCuban vampire bat
The Common vampire bat has specialized infrared sensors in its nose-leaf.

Infrared sensing in vampire bats

infrared perceptionheat sensorsthermoreceptors
This infrared perception is possibly used in detecting regions of maximal blood flow on targeted prey.

Pinophyta

coniferconiferousconifers
Other animals with specialized heat detectors are forest fire seeking beetles (Melanophila acuminata), which lay their eggs in conifers freshly killed by forest fires.

Pachliopta aristolochiae

common rosePachliopta aristolochiae aristolochiaePachliopta aristolochiae asteris
Darkly pigmented butterflies Pachliopta aristolochiae and Troides rhadamathus use specialized heat detectors to avoid damage while basking.

Hemiptera

true bugbugtrue bugs
The blood sucking bugs Triatoma infestans may also have a specialised thermoception organ.

Triatoma infestans

BenchucaT. infestanswinchuka
The blood sucking bugs Triatoma infestans may also have a specialised thermoception organ.

Thermoreceptor

thermoreceptorstemperatureWarmth receptors
In humans, temperature sensation from thermoreceptors enters the spinal cord along the axons of Lissauer's tract that synapse on second order neurons in grey matter of the dorsal horn.

Posterolateral tract

Lissauer's tracttract of Lissauerdorso-lateral tract
In humans, temperature sensation from thermoreceptors enters the spinal cord along the axons of Lissauer's tract that synapse on second order neurons in grey matter of the dorsal horn.

Grey matter

gray mattergraygrey
In humans, temperature sensation from thermoreceptors enters the spinal cord along the axons of Lissauer's tract that synapse on second order neurons in grey matter of the dorsal horn.

Posterior grey column

dorsal hornposterior hornposterior horn of spinal cord
In humans, temperature sensation from thermoreceptors enters the spinal cord along the axons of Lissauer's tract that synapse on second order neurons in grey matter of the dorsal horn.

Decussation

decussatedecussatesdecussately
The axons of these second order neurons then decussate, joining the spinothalamic tract as they ascend to neurons in the ventral posterolateral nucleus of the thalamus.

Spinothalamic tract

anterolateral systemlateral spinothalamic tractspinothalamic
The axons of these second order neurons then decussate, joining the spinothalamic tract as they ascend to neurons in the ventral posterolateral nucleus of the thalamus.

Ventral posterolateral nucleus

ventral posterior lateral nucleusVPLventral posterolateral
The axons of these second order neurons then decussate, joining the spinothalamic tract as they ascend to neurons in the ventral posterolateral nucleus of the thalamus.

Thalamus

thalamicMetathalamusthalami
The axons of these second order neurons then decussate, joining the spinothalamic tract as they ascend to neurons in the ventral posterolateral nucleus of the thalamus.