Lihlopha tsa ho senya meputso: Ho rateha, ho batla, le ho ithuta (2010)

Moputso: Maikutlo - Sehlopha sena se na le lithuto le litlhahlobo tse ngata tse lekolang likarolo tsa neural tsa ho batla le ho rata. Khopolo ea hajoale e fana ka maikutlo a hore mekhoa ea dopamine e rata le mekhoa ea opioid ea hlokahala. Bokhoba bo batla haholo hoo o tsoelang pele ho bo sebelisa leha o tobane le litlamorao tse mpe.


Ho ithuta ka botlalo: Lintho tse khahlisang moputso: 'ho rata', 'ho batla' le ho ithuta

Curr Opin Pharmacol. 2009 Pherekhong; 9 (1): 65-73.

E phatlalalitsoe marang-rang 2009 Januari 21. Doi: 10.1016 / j.coph.2008.12.014.

Kent C Berridge, Terry E Robinson, le J Wayne Aldridge

Aterese Lefapha la Psychology, Univesithi ea Michigan, Ann Arbor, 48109-1043, USA

Sengoli se lumellanang: Berridge, Kent C (Email: [imeile e sirelelitsoe])

inahaneloang

Lilemong tsa morao tjena ho entsoe tsoelo-pele ea bohlokoa e ntlafatsang likarolo tsa kelello tsa moputso le mekhoa ea bona e ka hare ea kutlo. Mona re totobatsa ka bokhutšoanyane se fumanoeng linthong tse tharo tse fapaneng tsa moputso: 'rata'(phello ea hedonic),'ho batla'(tšusumetso) ho ithuta (likamano tse kopanyang le likhopolo-taba). Kutloisiso e betere ea likarolo tsa moputso, le likarolo tsa bona tsa neurobiological, li ka thusa ho qapa liphekolo tse ntlafalitsoeng bakeng sa mathata a ho feto-fetoha le maikutlo, ho tloha ho tepella maikutlo ho isa ho mathata a ho ja, ho lemalla lithethefatsi, le ho phehella mesebetsi e meng.

Selelekela

Ho khahleha

Ho batho ba bangata 'moputso' ke ntho e lakatsehang hobane e fana ka boiphihlelo bo tsebahalang - 'me ka hona poleloana ena e ka sebelisoa ho bolela liketsahalo tsa kelello le neurobiological tse hlahisang thabo e pakeng tsa. Empa bopaki bo fana ka maikutlo a hore thabo e ikhethileng ke karolo e 'ngoe ea moputso, le hore meputso e ka susumetsa boitšoaro leha motho a sa e tsebe ka hloko. Ka sebele, ho nahana ka botebo ka linako tse ling ho ka baka pherekano mabapi le hore na meputso e ratoa hakae, athe likarabelo tsa hang-hang li ka ba tse nepahetseng haholoanyane [1].

Boikutlong bo fetelletseng, leha motho a sa tsebe letho kapa a sa nahane letho ka seo a se batlang se ka susumetsoa ke boitšoaro kapa 'mele ntle le maikutlo a monate (mohlala ka mor'a pontšo e khutšoane ea ponahalo ea sefahleho e thabileng kapa tekanyo e fokolang ea "cocaine" e fokolang)2,3]. Ka hona, le ha mohlomong e le ntho e makatsang, mehato ea sepheo sa 'ho rata' karabelo le meputso ka linako tse ling e ka fana ka phihlello e otlolohileng ho litsamaiso tsa hedonic ho feta litlaleho tse bobebe.

Morero o ka sehloohong oa li-neuroscience tse sebetsang ke ho tseba hore na ke lipapatso life tsa boko tse thabisang, ebang ke tse ikhethileng kapa tse ikemiselitseng. Lithuto tsa ho rekota tse ncha le tsa neural tsa ho fumana hore meputso e tloha ho tatso e tsoekere ho cocaine e kenang ka hare, ho hapa chelete kapa sefahleho se bososelang ho kenya tšebetsong likarolo tse ngata tsa boko, ho kenyelletsa orbitofrontal cortex, anterior cingulate and insula, le likarolo tse sa bonahaleng tse kang li-nucleus accumbens, ventral pallidum, ventral tegmentum, le mesolimbic dopamine projeke, amygdala, jj. [4 •,5,6,7 ••,8,9 •,10 •,11-13].

Empa ke efe ea lits'ebetso tseo tsa boko e hlileng e bakang thabo ea moputso? Hona ke li-activation life tse hlahisoang ke moputso (mohlala, ka lebaka la ts'ebetso ea ts'ebetso ea marang-rang) kapa litlamorao tsa monyaka (ho nka sebaka sa tšebetso tse ling tse amanang le moputso)? Rona le ba bang re batlile kholiseho ea monyaka lithutong tsa liphoofolo ka ho supa ho qhekelloa ha boko ho eketsang phello ea hedonic [6,14 ••,15,16,17 •,18-22].

Ho ithuta lits'ebetso tsa neural tse ikarabellang bakeng sa meputso e kholo ea meputso, rona le ba bang re sebelisitse monyetla oa ho 'rata' meputso e monate, joalo ka sefahleho sa masea a sa tsoa tsoaloa sa motho le phello ea sefahleho sa orangutan, lichimpanzi, litšoene, esita le litšoene. likhoto le litoeba [4 •,18,23,24]. Sweets li etsa litlatsetso tse ntle tsa sefahleho tse 'ratang' linthong tsena tsohle (ho nyeka ha molomo, lipapatso tsa leleme le morethetho, joalo-joalo), empa litakatso tse babang li hlahisa polelo e nyarosang ea 'ho nyenyefatsa' (li-gapes, jj .; Setšoantšo sa 1; Filimi e tlatsetsang 1). Litakatso tse joalo tsa "ho rata" - 'ho sa thabiseng' ho latsoa ho laoloa ke karolo e phahameng ea methapo ea kelello bakeng sa tšusumetso ea matla phatleng le tšebetsong ea kelello, mme li susumetsoa ke lintho tse ngata tse fetohang monate, joalo ka tlala / satiety le likhetho tse ithutoang tsa tatso kapa ho rata.

Setšoantšo sa 1

Mohlala boits'oaro bo "ratang" tsela le maikutlo a kelello a hedonic hotsp bakeng sa thabo ea maikutlo. Ka holimo: liphetoho tse ntle tsa hedonic tse 'ratang' li hlahisoa ke tatso ea sucrose e tsoang ho lesea le ho kholo ea batho ba baholo (mohlala, leqhubu la maqhubu a puo). ...

Ke lits'ebetso tse 'maloa feela tsa li-neurochemical tse fumanoeng ho fihlela hona joale ho ntlafatsa ts'usumetso ea' ho rata 'le tatso e monate literekeng,' me ke libakeng tse fokolang feela tsa boko. Opioid, endocannabinoid, le GABA-benzodiazepine neurotransmitter system li bohlokoa ho hlahisa sephetho se khahlisang [14 ••,15,16,17 •,25,26], haholo libakeng tse ikhethang ka hara li-organic organisation (Setšoantšo sa 1 'me Setšoantšo sa 2) [15,16,17 •,21,27]. Re bitsitse libaka tsena hore ke "hedonic hotspots" hobane li khona ho hlahisa likhahla tsa 'ho rata', hape ka ho iketelletsa, thabo. Sebaka se le seng sa "hedonic hotspot" sa "opioid" sa ntlafatso ea menyaka ea maikutlo se sebakeng sa "nucleus" se bokellanang kahare ho mokokotlo oa rostrodorsal quibrant ea eona ea meroho, e ka bang millimitha ea li-millimeter [14 ••,15,28].

Ka mantsoe a mang, hotspot e na le karolo ea 30% feela ea bophahamo ba modial shell, le ka tlase ho 10% ea li-nucleus tse bokellaneng kaofela. Kahare ho hedonic hotspot, microinjection ea mu opioid agonist, DAMGO, e imena habeli kapa e latele palo ea karabelo ea 'ho rata' e hlahisitsoeng ke tatso ea sucrose [14 ••,28]. Hotspot e 'ngoe ea hedonic e fumanoa karolong e ka mora halofo ea pallidum ea ventral, moo hape DAMGO e eketsang karabelo ea' ho rata 'le monate [17 •,21,28]. Lihoteleng ka bobeli, "micinention" e tšoanang e boetse e eketsa habeli 'ho hloka' lijo ka kutloisiso ea ho susumetsa mokhoa oa ho ja le ho ja lijo.

Setšoantšo sa 2

Keketseho ea lihapuoa tsa "op opidid" ka har'a li-nucleus li bokellana ka moelelo oa libaka tsa 'ho rata' khahlanong le 'ho batla'. Green: Khetla eohle ea medial e kenyelletsa keketseho e matlafatsang ea 'ho batla' bakeng sa moputso oa lijo. ...

Ntle le lipeo tseo, esita le ka sebopeho se ts'oanang, li-activio tsa opioid li hlahisa litlamorao tse fapaneng haholo. Mohlala, ho NAc hoo e batlang e le libaka tse ling tsohle tsa DAMGO microinjection li ntse li tsosa 'ho batla' lijo joalo ka hotspot, empa u se ke oa ntlafatsa 'ho rata' (esita le ho hatella 'ho rata' ka poso e batang ea mariha khetla ea medali ha u ntse u e ntse e tsosa takatso ea lijo; Setšoantšo sa 2). Kahoo, ho bapisa litlamorao tsa ts'ebetso ea mu opioid ka hare kapa kantle ho hotspot e khokahano ea medc ea NAc e bonts'a hore libaka tsa opioid tse ikarabellang bakeng sa 'ho rata' li sa aroloe ka mokhoa o fapaneng le tse susumetsang 'ho batla' [14 ••,16].

Endocannabinoids e ntlafatsa karabelo ea 'ho rata' ka hotspot ea NAc e koahelang sebaka sa op opioid [16,27]. Microinjection ea anandamide ho endocannabinoid hotspot, e sebetsang mohlomong ka ho susumetsa li-receptor tsa CB1 moo, e fetang makhetlo a mabeli ho feta tekanyo ea karabelo ea 'ho rata' le tatso ea sucrose (le lijo tse fetang habeli). Substrate ena ea hedonic endocannabinoid e ka amana le litlamorao tsa meriana tsa bahanyetsi ba endocannabinoid ha ba sebelisoa e le menyetla ea ho phekola botena kapa ho lemalla [16,29,30].

"Porral pallidum" ke sepheo sa mantlha sa tlhahiso ea li-nucleus, 'me halofo ea eona ea kamorao e na le "opioid hotspot" ea bobeli.17 •,21]. Ho pallidum hotspot, li-microinjections tsa DAMGO tse peli tse 'ratang' sucrose le 'ho batla' lijo (tse lekantsoeng ka mokhoa oa ho ja). Ka lehlakoreng le leng, microinjection ea DAMGO kantle ho hotspot e hatella 'ho rata' le 'ho batla'. Ka mokhoa o ikemetseng, 'ho batla' ho hlohlelletsoa ka thoko ho libaka tsohle libakeng tsa ventral pallidum ka blockade ea GABAA li-receptors ka bicuculline microinjection, ntle le ho fetola 'ho rata' sebakeng leha e le sefe [17 •,31].

Karolo ea "ventral pallidum" ho "rata" le 'ho batla' e etsa hore e be le thahasello e khethehileng bakeng sa lithuto tsa neural activation tse hlahisoang ke moputso. Ho batho, cocaine, thobalano, lijo, kapa moputso oa chelete kaofela li kenya ts'ebetso ea "ventral pallidum" ho kenyelletsa le subterion subterion e tsamaellanang le hotspot ea hedonic ho litoeba [9 •,10 •,11,21]. Boithuto bo qaqileng haholoanyane ba electrophysiological ea hore na li-neurons ka lipontšong tsa posterior ventral pallidum encode hedonic signats ka litoeba, re fumane hore li-neurons tsa hotspot li tuka ka matla ho tatso e monate ea sucrose ho fapana le tatso e seng monate ea letsoai (makhetlo a mararo a potoloho ea metsi a leoatle)7 ••]. Leha ho le joalo, ka boyona phapang ea ho thunya pakeng tsa sucrose le letsoai ha e supe hore li-neurons li kenyelletsa tšusumetso ea bona ea hedonic ('ho rata' bapisoa le ho iphaphatha ') ho fapana le hoo, e mpa e le tšusumetso ea maikutlo e khothalletsang (monate o bapileng le letsoai) ).

Leha ho le joalo, re fumane hape hore ts'ebetso ea li-neuronal e ile ea latela phetoho boleng ba boleng ba hedonic ba lintho tsena ha monate oa tatso ea NaCl o thehiloe ka mokhoa o ikhethileng ka ho kenya takatso ea nama ea letsoai. Ha likhoto li ne li felisoa ka sodium (ka mineralocorticoid hormone le tsamaiso ea diuretic), tatso e matla haholo ea letsoai e ile ea "ratoa" ka mokhoa o lekanang le sucrose, mme li-neurons tse ka hare ho pallidum tsa qala ho chesa ka matla ka letsoai le joalo ka sucrose [7 ••] (Setšoantšo sa 3). Re nahana hore lipatlisiso tse joalo li bonts'a hore, ehlile, mekhoa ea ho thunya ea li-neuron tsa pallidal neurons encode hedonic 'rata' bakeng sa maikutlo a monate, ho fapana le likarolo tse bobebe tsa maikutlo [21,32].

Setšoantšo sa 3

Neodonal ea ho "rata" bakeng sa maikutlo a monate a litatso tse monate le tse letsoai. Likarabo tsa ho thunya ka Neuronal li bonts'oa ho tloha ho electrode ea potral pallidum e llang ho litakatso tsa sucrose le letsoai le matla le kentsoeng molomong oa rat. Tse peli ...

Mekhabiso ea Hedonic e hasaneng bokong e ka hokahana ka tsela e hlophisehileng, e kopanya likarolo tse ngata tsa bokapele ba kelello le tsamaiso ea kelello, joalo ka lihlekehleke tse ngata tsa sehlekehleke se seholo se rekisanang [21,24,27]. Boemong bo phahameng haholo ba meaho ea li-limbic ho li-ventral forebrain, ntlafatso ea 'ho rata' ke li-hotspots ho li-accumbens le ventral pallidum e ka sebetsa hammoho e le heterarkia e le 'ngoe ea tšebelisano, e hloka' likhetho 'tse sa lumellaneng ka li-hotspots ka bobeli [28]. Mohlala, ho holisoa hoa hedonic ke ts'usumetso ea opioid ea hotspot e le 'ngoe e ka sitisoa ke opioid receptor blockade hotspot e ngoe le ha' ho batla 'ho khothaletsoa ke NAc hotspot ho ne ho le matla le ho feta, mme ho phehella kamora VP hotspot blockade [28].

Tšebelisano e tšoanang e neng e bakoa ke 'ho rata' e bonoe ho latela manono a ts'ebetso ea opioid le benzodiazepine (mohlomong e kenyelletsa karolo ea parabrachial nucleus ea brainstem pons) [27]. Keketso ea 'ho rata' e hlahisoang ke tsamaiso ea benzodiazepine e bonahala e hloka ho haptjoa hoa maiketsetso ka li-opioids tsa endo native, hobane e thibetsoe ke tsamaiso ea naloxone [33]. Ka hona potoloho e le 'ngoe ea hedonic e ka kopanya hammoho mekhoa e mengata ea neuroanatomical le neuro-chemicals ho etsa hore "rata" maikutlo le thabo e be teng.

'Ke batla'

Ka tloaelo boko bo 'rata' meputso eo e e batlang. Empa ka linako tse ling e ka 'ba batla' feela. Patlisiso e fumane hore meputso ea 'ho rata' le ea 'ho batla' ha e aroloe maikutlong le kelellong. Ka 'ho batla', re bolela ts'usumetso ea ts'usumetso, mofuta oa tšusumetso e khothaletsang mokhoa oa ho sebelisa le ho sebelisa meputso, mme o nang le likarolo tse fapaneng tsa kelello le neurobiological. Mohlala, ho hlohlona ha ts'usumetso ho khona ho khetholoha ho tsoa mefuteng e hlokolosi ea takatso ea moelelo e boleloang ke lentsoe le tloaelehileng, ho batla, ho kenyelletsang sepheo sa ho hlakola kapa litebello tse hlakileng tsa liphetho tsa kamoso, mme tseo boholo ba tsona e leng lipakeng tsa potoloho ea cortical [34-37].

Ha ho bapisoa, ts'ebetso ea ts'usumetso e kenella pakeng tsa lits'ebetso tse tlase tse nang le boima ba mesolimbic dopamine, ha e hloke litebello tse hlakileng ebile e tsepamisitsoe ka kotloloho ho susumetso e amanang le moputso [34,35,38]. Maemong a kang bokhoba, ho kenyelletsa maikutlo a ho susumetsa, phapang lipakeng tsa ts'usumetso ea ts'usumetso le litakatso tse ling tsa kelello ka linako tse ling ho ka lebisa ho se ka bitsang 'ho sa batlehe': ke hore, 'ho batla' bakeng sa se sa batloeng, ka lebaka la ho fetella khothatsoa habonolo39 •,40 •,41].

'Ho batla' ho ka sebetsa molemong oa tšusumetso ea (lintho tse sa susumetsoang ntle le tšusumetso, li-UCS) kapa ho ithuta ka tšusumetso e neng e sa nke lehlakore empa joale o bolela esale pele ka ho fumaneha ha moputso UCSs (mofuta oa boipheliso oa CSlo, li-CS) [38,40 •]. Ka mantsoe a mang, li-CS li fumana thepa e khothalletsang ha CS e pentiloe ka ho amohela moputso oa kahare kapa oa 'tlhaho' ka ho sebelisa mekhatlo e susumetsang ea khothaletso ea Pavlovian (S-S). Ho hlohlella ho ts'oanelang ho hlahisoa ke li-CS ka mekhoa e matla e hohelang mekhatlo eo nakong ea ho 'batla', ho etsa CS e hohelang, le e matla le e tataisang boitšoaro bo tataisang ho ea moputsong [35].

Ha CS e amahanngoa le ho se khone ho susumetsoa ka mokhoa o tloaelehileng e fumana thepa e 'batlang' e hlakileng le e lekantsoeng [35,42], e ka ts'oaroang ha CS e kopane hape 'meleng (le hoja litšoantšo tse hlakileng tsa litefiso tsa moputso le tsona li ka lekana, haholo bathong). Thepa ea ho "batla" e hlahisoang ke mekhoa ena ea moputso e kenyelletsa tse latelang:

  1. Tšusumetso ea matla a khoheli a susumetsang. CS e kopantsoeng le ts'usumetso ea ts'usumetso e fetoha e khahlang ka mokhoa o susumetsang, mofuta oa 'matla a susumetsang', a atameloang mme ka linako tse ling a bile a jeoa (Movie 1 e tlatsetsang) [43,44 •,45]. Tšusumetso ea matla a susumetsang a khothalletso ea CS e ka ba matla hoo CS e ka bang ea etsa hore ho be bonolo ho e sebelisa [46]. Mohlala, batho ba lemaletseng koae, ka linako tse ling ba 'lelekisa lithotsela' kapa ba hlahlangoa ka mor'a masale a masoeu ao ba tsebang hore ha se koae.
  2. Cue-entse hore US e 'batle'. Ho kopana le CS bakeng sa moputso ho boetse ho baka 'ho batla' bakeng sa li-UCS tsa eona tse amanang, mohlomong ka ho fetisoa ha litšusumetso tse khothatsang ho baemeli ba amanang le moputso o sieo [34,47,48]. Litekong tsa laboratori ea liphoofolo, hona ho bonahala e le tlhoro ea phasic ea keketseho ea cue-e bakiloeng ke ho sebeletsa moputso o sieo (haholo-holo e hlahlojoa litekong tse bitsoang PIT kapa Pavlovian-Instrumental Transfer tse entsoeng tlasa maemo a ho timela; Setšoantšo sa 4). Taba ea "ho batla" e hlahisoang ke cue e bakiloeng e ka ba e tobileng bakeng sa moputso o amanang le eona, kapa ka linako tse ling e qhaloa ka tsela e akaretsang haholo ea ho potlakela ho "batla" bakeng sa meputso e meng hape (joalo ka ha bakuli ba lemaletseng boloi kapa bakuli ba dopamine ba bonts'a papali ea chelete, thobalano. boits'oaro, jj, ho kenyelletsa molemong oa ts'ebetso ea ho sebelisa lithethefatsi) [49,50]. Kahoo, ho kopana le ts'usumetso ea ts'usumetso ho ka eketsa tšusumetso ea ho batla meputso, le ho eketsa mafolofolo ao ba a batloang, ketsahalo e ka bang bohlokoa haholo ha cices li boetse li baka ho lemalla.

    Setšoantšo sa 4

    NAc amphetamine e matlafalitsoe ea tlhokahalo ea cue-e hlohlellelitsoeng. Litlhōrō tsa nakoana tsa 'ho batla' bakeng sa moputso oa sucrose li ts'oaroa ke ponahalo ea 30-s ea setšoantšo sa Suvose secrose litekong tsa ho fetisoa tsa Pavlovian-Instrumental Transfer (CS +; ka ho le letona). ...
  3. Seemo se matlafatsang sa maemo. Ho hlohlelletsa litšusumetso hape ho etsa hore CS e khahle ebile e 'batloe' ka kutloisiso ea hore motho o tla sebetsa ho fumana CS ka boeona, leha a sa fumane moputso oa Amerika. Hangata hona ho bitsoa ho matlafatsoa ha ntho e itseng. Ka mokhoa o ts'oanang, ho kenyelletsa CS ho se fumanoeng ha phoofolo e sebeletsa moputso oa Amerika joalo ka koae kapa nicotine, e eketsa kamoo ba sebetsang ka cheseho, mohlomong hobane CS e eketsa sepheo se eketsehileng sa 'ho batloa'51]. Leha ho le joalo, rea hlokomela hore matlafatso a boemo bo pharalletse ho feta ho 'batla', a hloka mekhoa e meng e kopaneng ea ho fumana mosebetsi oa bohlokoa. Hape, mekhoa e meng ea SR e ka kopanya matlafatso ea maemo maemong a itseng ntle le tšusumetso ea letho ho hang. Sena se etsa hore thepa ea matla a susumetsang le "cential" tse reretsoeng hore li be le "bohlokoa" li bohlokoa haholo ho khethollleng litšekamelo tse fetelletseng tsa ts'usumetso.

Meketso ea litšusumetso tsa ts'usumetso

  1. Ketso ea ho hlohlona? Pele re tlohela litšobotsi tsa kelello tsa 'ho batla', re lekeha ho nahana hore boitšoaro bo itseng diketso kapa mananeo a koloi hape e ka ba 'e hlokoang', joalo ka tšusumetso ea ts'usumetso, ka sebopeho sa ts'usumetso e ts'ehetsoeng ho liemeli tsa boko tsa mekhatlo ea kahare ho fapana le lipontšo tsa tšusumetso ea kantle. Taba ena re e bitsa 'ts'ebetso ea ts'ebetso' kapa 'ho batla' ho nka khato. Ts'ebetso ea mahlanya eo re fanang ka eona e kanna ea ba koloi e lekanang le ts'usumetso ea ts'usumetso ea ts'usumetso, hape e hokahanngoa ke lits'ebetso tse fetang tsa bokong (mohlala: dorsal nigrostriatal dopamine system tse fetang le tse ling tsa mesolimbic ea ventral). Ho hlahisa maikutlo ho etsa lintho, mohlomong ho kenyelletsa mesebetsi e fapaneng ea koloi le tšebetso ka har'a neostriatum (sebopeho se tsejoang hape ho nka karolo ho ts'ebetso) se shebahala se lumellana le mela e 'maloa e hlahang mabapi le ts'ebetso ea basal ganglia [52,53,54 •,55].
  2. Takatso e ka amana le tšabo? Kamora nako, re hlokometse hore ts'usumetso ea ts'usumetso e kanna ea arolelana le ho hlaseloa ka mokhoa o makatsang mekhoeng ea mesocorticolimbic e nang le litšila tse tšosang [56,57 •,58,59]. Mohlala, tšebelisano ea dopamine le glutamate ho li- circus tsa circus li hlahisa takatso eseng tsona feela, empa hape li tšaba, li hlophisitsoe ka mokhoa o ikhethileng joalo ka sebopeho se sebetsang, moo ho senyeha ha linotlolo tse hlophisitsoeng ka kotloloho ho hlahisang motsoako o eketsang oa litakatso tsa boits'oaro bo khahlano le boits'oaro bo tšosang [57 •]. Ho feta moo, "linotlolo" tse ling tsa "konokono" li ka fokotsoa ho hlahisa sepheo se le seng ho ea ka maikutlo a phetoho ka kelellong ea kantle (mohlala phetoho ho tloha tikolohong e ntle ea lapeng ho ea ho e sithabetsang mme e tlatsitsoe ka mmino o matla oa rock) [56].
    Liphumano tse joalo tsa morao-rao li bonts'a hore lits'oants'o tsa "neurochemical" kapa "ho batla" lits'ebetso tse hlalositsoeng kaholimo li ke ke tsa bonts'a lits'ebetso tsa "mohala o ngotsoeng" tse sa feleng moo 'karolo e le' ngoe e sebetsang '. Sebakeng seo li ka bonts'a bokhoni bo ikhethang ba ts'ebetso (mohlala, hedonic hotspots) kapa li-susumetso tsa moea (mohlala mohlala oa tšabo ea takatso) ea likarolo tse ikhethang tsa methapo ea kutlo. E meng ea litekanyetso tse joalo e kanna ea khona ho sebetsa ka mekhoa e mengata e fapaneng, ho latela lintlha tse ling ka nako e le 'ngoe, e le hore ba ka khona ho fetoha lipakeng tsa mesebetsi e fapaneng le takatso.

Li-substrates tsa Neurobiological bakeng sa ho 'batla'

Ha re bapisa li-neurobiology tsa 'ho batla' ho 'ho rata', re hlokomela hore likarolo tse ling tsa boko ba 'ho batla' li tsamaisoa ka bongata mme li sebetsa habonolo ho feta likarolo tse ling tsa 'ho rata' [38,53,60,61 •,62-65]. Mechine ea "ho batla" ea Neocochemical e mengata ebile e fapana maemong a li-neurochemical le neuroanatomical, eo mohlomong e leng motheo oa ketsahalo ea 'ho batla' moputso ntle le ho 'rata' moputso o tšoanang. Ntle le lits'ebetso tsa opioid, tšebelisano ea dopamine le dopamine le corticolimbic glutamate le lits'ebetso tse ling tsa methapo ea kutlo li kenya ts'usumetso ea sesishene sa 'ho batla'. Litla-morao tsa meriana ea tse ling tsa lits'ebetso tsena li ka fetola habonolo 'ho batla' ntle le ho fetola 'ho rata'. Mohlala, khatello ea methapo ea methapo ea methapo ea kutlo e fokotsa ho 'batla' empa eseng 'ho rata' [38,64].

Ka lehlakoreng le leng, ho eketsoa ha 'ho batla' ntle le 'ho rata' ho hlahisitsoe ke ts'ebetso ea lisebelisoa tsa dopamine ka amphetamine kapa lithethefatsi tse tšoanang tsa catecholamine tse fanoang ka tatellano kapa li-Microinjected ka kotloloho ka har'a li-nucleus accumbens, kapa ka liphatsa tsa lefutso tse hlahisang maemo a holimo a dopamine (ka ho fokotseha ha ba tsamaisang dopamine ka har'a marang-rang a mesocorticolimbic, le ka maikutlo a haufinyane a lits'ebetso tse amanang le mesocorticolimbic-dopamine ka taolo e pheta-pheto ea litekanyetso tse phahameng tsa lithethefatsi tse lemalloang (Setšoantšo sa 3-Setšoantšo sa 5) [39 •,40 •,61 •,66]. Re khothalelitse hore ho batho ba kotsing ea ho hlaseloa habonolo lithethefatsi tsa tlhekefetso li hlahise 'ho batla' ho sebelisa lithethefatsi tse ngata, ebang lithethefatsi tse tšoanang li "ratiloe" ka tsela e tšoanang, 'me kahoo li kenya letsoho ho lemeng [39 •,40 •,42] (Setšoantšo sa 5).

Setšoantšo sa 5

Moetso oa tšusumetso ea takatso ea ho lemalla. Schematic mohlala oa ho "batla" ho sebelisa lithethefatsi o ka hola ha nako e ntse e ikemetse ka ho 'rata' menyaka ea lithethefatsi ha motho a fetoha motho ea lemalloang. Phetoho ho tsoa ho lithethefatsi tse tloaelehileng ...

Ho lahla ho ithuta ho tsoa 'ho batleng': thepa e khothalletsoang e bapisoang le e khothalletsang ea litheko tse amanang le moputso

Hang ha mekhoa e amanang le moputso e ithutile, mekhoa eo e bolela esale pele meputso e amanang le eona mme ka ho eketsa e etsa hore 'ba batle' ho fumana meputso. Na ho bolela esale pele le ho 'batla' hoa tšoana? Kapa li kenyelletsa mekhoa e fapaneng? Maikutlo a rona ke hore ho bolela esale pele le ho hlohlona ho ka fetoloang ka thoko, joalo ka ha 'ho rata' le 'ho batla' ho ka37,38,39 •,41,46,61 •]. Mesebetsi ea kelello ea ho hlapanya kelello le methapo ea bona ea kutlo e bohlokoa mefuteng ea liteko ea ho ithuta ka moputso le khothatso, mme e na le moelelo ho li-pathologies, ho kenyelletsa le bokhoba ba tahi. Re tla hlalosa ka bokhutšoanyane mela e meraro ea bopaki bo tsoang lilaboratoring tsa rona tse fanang ka maikutlo a matla a susumetsang le a susumetsang a litheko tse amanang le moputso ha a sa lumellane.

Mohlala oa pele o tsoa litekong tse bonts'ang hore li-CS li ka etsa hore motho a atamele - ke hore, li sebetsa e le 'matla a khoheli', li hulela motho ho tsona. Liteko tse ngata li fumane hore ha cue kapa 'sign' (CS), joalo ka ho kenyelletsoa ha lebota leboteng, e pentiloe ka tlhahiso ea US e ruisang, joalo ka lijo, liphoofolo li atameleha ho ea ho eona.43,44 •]. Senotlolo sa ho khetholla bolepi esale pele ho susumetso se kahara sebopeho sa karabelo ea motho ka mong (CR) [43].

Likhoto tse ling li tla ipatela lever ka potlako ho nehelano e 'ngoe le e' ngoe ebe li tla ho kenya letsoho ka tjantjello ka ho e tsitsipanya, ho e tsitsipanya le ho e loma - ho bonahala eka e leka ho 'ja' lever.Movie 1 e tlatsetsang) [45]. Cue e bolelang esale pele moputso oa koae e atameloa ka mokhoa o ts'oanang 'me e ts'oaroa le mokhoa oa eona oa boits'oaro bo khahlisang [44 •], e ka ikarabellang bakeng sa bokhoni ba lits'ebetso tse amanang le lithethefatsi ho fetoha hampe, e hohelang ba lemaletseng tsona. Li-CR tse joalo li lebisitsoe ho CS ka boyona li bitsoa 'track-tracking'.

Leha ho le joalo, ha se litoeba tsohle tse nang le CR-tracking tracking ea CR. Le maemong a teko a tšoanang, likhoto li hlahisa CR e fapaneng - li ithuta ho atamela 'sepheo' (mokotla oa lijo), eseng lever, ha ho hlahisoa lever-CS. CR ena e bitsoa 'track-tracking'. Kahoo, ka ba nang le boiphihlelo ba-trackers ba tla ho fihlela sepheo seo le ho feta ka nepo pontšong e 'ngoe le e' ngoe ea lever-CS, 'me ba qala ho ts'oara thaere ea lijo ka tjantjello, e hohelang, esita le ho e loma [43,44 •,45]. Bakeng sa likhoto tsohle, CS (lever insertion) e na le bohlokoa bo lekantsoeng ba pele: e tsosa li-CR le ho lata li-CR.

Phapang feela ke hore na CR e lebisitsoe hokae. Sena se fana ka maikutlo a hore ho li-trackers the lever-CS e hlahisoa ke ho hlohlelletsoa hobane e ea khahla, 'me e ts'ehetsoa ke liphihlelo tsa hore li-trackers trackers ka ho khetheha le tsona li tla ithuta ho etsa karabo e ncha ho fumana CS (ke hore e sebelisitsoeng hantle. matlafatsa)46]. Bakeng sa litefiso tsa sepheo CS e bolela esale pele lijo, 'me e lebisa ho nts'etsopele ea CR, empa CS ka boeona ha e bonahale e hlahisoa ke ho se tsitse ka mekhoa ena (ho fapana le haeba ho na le seo, sepheo se "batloa") [43,46]. Liphumano tse joalo li tsamaisana le tlhahiso ea rona ea hore boleng bo boletseng pele ho moputso kapa boleng bo kopanyang ba CS e ithutileng bo ka qheleloa ka thoko ho boleng ba eona bo khothalletsoang, ho ipapisitse le hore na ho na le tšebeliso e ntle ea ts'usumetso ea ts'usumetso [46].

Letoto la bobeli la bopaki ba ho paka polelo esale pele ho tsoa ho ts'usumetso ea ts'usumetso e tsoa ho lithuto tsa "ho batla" neural dikhoutu, haholo-holo ka mor'a ts'ebetso e amanang le dopamine e amanang le dopamine (ka amphetamine kapa sensitization ea pele). Ho phaellana ha dopamine ho bonahala ho ntlafatsa ka ho khetheha ho thunya ha maoto le matsoho ho lets'oao le kenyang matla a ts'usumetso e kholo (Setšoantšo sa 6) [61 •]. Ka lehlakoreng le leng, ts'ebetso ea dopamine ha ea ka ea ntlafatsa mats'oao a neural ao khoutu e phahameng haholo [61 •].

Setšoantšo sa 6

Ho arohana ha boleng ba ts'usumetso ea CS (ho batla) ho boleng ba ponelo-pele ea CS (ho ithuta) ka ts'ebetso ea mesolimbic (e hlahisoang ke sensitization kapa tsamaiso e mpe ea amphetamine). Tlhahlobo ena ea boemo bo bocha ea methapo ea ho thunya ea "neuronal pistidum" e bontša liphetoho ...

Ntlha ea boraro ea bopaki e tsoa ho ho feto-fetoha ha 'ho batla' ha CS ha ho ntse ho tšoarella polelo ea eona ea ho ithuta e sa fetoheng. Mohlala, "cue" e bolelang letsoai le tebileng ha e 'batloe' empa e ka khutlisetsoa 'se batloang' ha takatso ea letsoai la 'mele e khothalletsoa. Ha ho thuto e ncha, 'me ka hona ha ho na phetoho lipakaneng tse ithutileng eona, e lokelang ho hlaha bakeng sa ts'usumetso ena hore e etsahale. Ho feta moo, boemo ba takatso ea lijo bo sa tloaelehang ha ho mohla bo kileng ba ba teng pele, 'me CS ha e hloke hore e be e kile ea amahanngoa le tatso ea' ho rata 'pele. Le ha ho le joalo, CS e neng e le mpe ka tšohanyetso e fetoha 'e hlokoang' sechabeng se secha mme e khona ho etsa sepheo sa ho thunya se tloaelehileng sa ts'usumetso ea ts'usumetso. Litekong tsa pele tsa takatso ea letsoai, ka tšohanyetso CS e tsosa matšoao a ho thunya a tlhaho a kenyang maikutlo a ho 'batla', le pele letsoai la UCS le kile la latsoa joalo ka ha le 'ratile' [67]. Tlhahlobo e joalo e bonts'a boleng ba ponts'o ea cue bo fapane le bokhoni ba eona ba ho etsa hore batho ba 'batle', kaha boitlamo ba morao-rao bo hloka lits'ebetso tse eketsehileng tsa neural ho hlahisa sepheo sa ho susumetsa le ho re 'o batla' ho fihlela sepheo sa sepheo.

Ho tla hlokahala lipatlisiso tse eketsehileng ho tseba hore na ho batla ho ba joang ha ho bapisoa le ho ithuta le ho bolela esale pele kahare ho bokopa. Leha ho le joalo, bopaki ho fihlela joale bo supa hore likarolo tsena li na le boits'oaro bo fapaneng ba kelello le likarolo tse arohaneng tsa neural.

fihlela qeto e

Lithuto tse amehang tsa "neuroscience" tsa "liking", 'ho batla', le likarolo tsa ho ithuta tsa meputso li senoletse hore lits'ebetso tsena tsa kelello li fetoha lits'ebetso tse fapaneng tsa neuroanatomical le neurochemical boko ho ea fihla tekanyong e tšoailoeng. Kutloisiso ena e ka lebisa kutloisisong e ntle ea hore na lits'ebetso tsa boko li hlahisa moputso o tloaelehileng joang, le ho se sebetsaneng le tlhabollo ea maikutlo le maikutlo. Lisebelisoa tse joalo li kenyelletsa ka ho khetheha hore na maikutlo a mesolimbic system a ka hlahisa ho phehella ha moputso mokhoeng oa ho lemalla lithethefatsi le mathata a amanang le tšusumetso ka ho sotha 'ho batla' moputso.

Boitsebiso bo Eketsehileng

Tatso ea "Hedonic" ea video

Liteboho

Patlisiso e entsoeng ke bangoli e tšehelitsoe ke lithuso tse tsoang ho National Institute on Drug Abuse le National Institute of Mental Health (USA).

Sehlomathiso A. Lintlha tsa tlatsetso

Lintlha tse tlatselletsang tse amanang le sengoloa sena li ka fumanoa, ka mofuta oa inthanete ho Doi: 10.1016 / j.coph. 2008.12.014.

Likarabo le ho bala ho khothalletsoang

Lingoloang tsa lithahasello tse khethehileng, tse phatlalalitsoeng nakong ea tlhahlobo, li hlakisitsoe joalo ka

• ea lithahasello tse khethehileng

•• ea thahasello e ikhethang

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