[???] [????] ??, ???? ??? ?? ? ???? ??? ??? ??, ????? ??? ?? ??? ?????.

1. ??
? ?? [ sensation, ¸ÐÓX, ¤«¤ó¤«¤¯ ]
- ??? ??? ??? ??? ??? ??? ??.

? ??? [ sensory organ, organs of senses ]
- ??? ???? ??? ????. ???¡¤???¡¤???¡¤???? ?????? ??????, ???? ????? ??? ???? ???? ???? ???? ?????. ??????? ??. ??? ??? ????? ????? ???? ??? ?? ?????.
???, ??? ??? ????? ?? ?? ????? ???? ??? ???????? ??. ?, ??, ??? ???? ? ?? ??? ??? ??? ????? ??? ??? ??? ???? ?? ??? ?? ????.
? ?? ?? ??? ??? ???, ?? ???? ??? ???? ??? ??? ???? ??? ????.

?? ?? ???? ?? ??? ??? ? ??(adapatation)?? ????? ????. ?????? ??? ???(receptor)? ?????, ??? ????(sensory nerve)? ?? ????? ?????? ??? ??? ?, ??? ????(motor nerve)? ?? ???(effector)? ???? ??? ????? ???? ??.

¡ù ??? ??! ???(receptor)??
- ??? ??? ????? ??? ??? ?? ?? ??? ??.
(1) ????(Extroceptor)
???? ???? ????? ???? ??? ??? ?? ???? ??? ??? ??
?? ??? ?? ??? ?? ??? ????? ?????(teleceptor)? ??, ?? ? ???? ? ? ??? ?? ??? ????? ?????(contact receptor)? ?????.
(2) ????(Interoceptor)
¢Ù ?????(proprioceptor)
- ??? ????? ?? ??? ????? ???? ??, ?, ???? ?? ??? ?????.
¢Ú ?????(visceroceptor)
- ???, ??, ?? ? ???? ?? ??? ?????.
¢Û ?????(pressureceptor)
- ??? ???.
¢Ü ?????(chemoreceptor)
- ????? ??? ?????.