Localized lesions of ventral striatum, but not arcopallium, enhanced impulsiveness in choices based on anticipated spatial proximity of food rewards in domestic chicks

Aoki, Naoya; Suzuki, Ryuhei; Izawa, Ei Ichi; Csillag, András; Matsushima, Toshiya

doi:10.1016/j.bbr.2005.10.002

Cited by 21 publications

(23 citation statements)

References 38 publications

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“…Lesions of the ventral striatum elicit impulsive choice behavior based on the anticipated spatial proximity of reward (Aoki et al 2006). In another experiment, the apomorphine-induced pecking response of pigeons has been found to be more intense when the agent is injected into the peripheral, rather than the central, region of the Ac (Acerbo et al 2002), although these subdivisions are not based on histological markers and may not be fully equivalent to the AcS and AcC, as defined in the present study.…”

Section: Discussionmentioning

confidence: 91%

Nucleus accumbens subregions: hodological and immunohistochemical study in the domestic chick (Gallus domesticus)

Bálint

Csillag

2006

Cell Tissue Res

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The nucleus accumbens was identified in avian species some time ago. However, the precise localization and extent of this nucleus is still a matter of controversy. We have used immunolabeling against calbindin, neuropeptide Y, and DARPP-32 (dopamine- and adenosine-related phosphoprotein, 32 kDa) for the selective marking of putative accumbens subdivisions and have followed the anterograde transport of biotinylated dextran amine injected to the nucleus tractus solitarii region of 7-day-old domestic chicks. The nucleus accumbens extending between rostrocaudal atlas coordinates A 10.6 and A 8.8 can be subdivided into the core and shell, the core corresponding to the ventromedial and juxtaventricular medial striatum laterodorsal to the bed nucleus of stria terminalis, and the shell representing an arched region situated ventrally and ventrolaterally to the core. Immunoreactivity to both calbindin and neuropeptide Y is more intense in the shell than in the core division. DARPP-32 immunolabeling does not differ in the two divisions but is markedly weaker in the bed nucleus of stria terminalis, enabling the separation of this nucleus from the surrounding accumbens subdivisions. Fibers from the nucleus solitarius predominantly terminate in the shell division, similar to the situation described in mammals. Whereas the suggested core lies entirely within the boundary of the medial striatum, the shell seems partially to overlap the ventral pallidum. We have been unable to subdivide the remaining part of accumbens lying rostral to A 10.6 into a putative shell and core by the methods employed in the present study. This region probably corresponds to the rostral pole of the nucleus accumbens.

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Section: Discussionmentioning

confidence: 91%

Nucleus accumbens subregions: hodological and immunohistochemical study in the domestic chick (Gallus domesticus)

Bálint

Csillag

2006

Cell Tissue Res

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“…However, the actual number of pecks per pellets (i.e., experimentally measured κ) remained unchanged, indicating that the consumption cost investment did not increase. The lesions caused no effects in those choices based solely on the amount of food [4], as in the case of Ac-MSt lesions [3,24]. Furthermore, in a Y-maze task for choices between a small-immediate and a large-distant alternative [4], the lesion had no effects on the impulsiveness.…”

Section: Consumption Time Arcopallium and Cost Aversionmentioning

confidence: 90%

“…On the other hand, the lesion had no effects in choices between a large and a small food reward both delivered immediately. Impulsiveness was enhanced also in other tasks, in which the reward was delayed by placing the larger food at a distance (80 -140 cm) in a Y-maze [3]; the temporal proximity is therefore interchangeable with the spatial proximity.…”

Section: Delay Nucleus Accumbens and Impulsivenessmentioning

confidence: 99%

Neuro-economics in chicks: Foraging choices based on amount, delay and cost

Matsushima

Kawamori

Bem-Sojka

2008

Brain Research Bulletin

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“…Running to, or approaching food, and pecking at, or handling, food have already been shown to have distinct neural substrates involved (ventral striatum/nucleus accumbens and arcopallium, respectively; Matsushima et al, 2008). For example, lesions of the ventral striatum enhanced choices of small/immediate reward against large/distant alternative (Izawa et al, 2003; Aoki et al, 2006a). Similarly, lesions of the arcopallium caused chicks to choose the small/easy reward more frequently than the large/costly alternative (Aoki et al, 2006b).…”

Section: Introductionmentioning

confidence: 99%

Social Facilitation Revisited: Increase in Foraging Efforts and Synchronization of Running in Domestic Chicks

Ogura

Matsushima

2011

Front. Neurosci.

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Social influences on foraging efforts were examined in domestic chicks by investigating the frequency of runs made to feeders and the amount of pecking to gain food. Single or paired chicks foraged in an I-shaped maze equipped with a millet feeder on each end, that distributed one or two grains at variable intervals. Regardless of when the grain(s) were dispensed, chicks ran back and forth between the feeders. Analyses of their movement patterns revealed: (1) running patterns were not directly synchronized with the dispensing of grain(s), (2) running distance was longer in paired chicks than in single chicks, (3) paired chicks partially synchronized their runs between feeders, and (4) social effects were immediate but cumulative after repeated blocks. We further examined the social effects on running by dividing the I-maze into two parallel lanes separated by a transparent wall, so that kleptoparasitic interference of food did not occur. Again, the chicks increased their running speed and were even more synchronized with their partner's movements, indicating that food competition alone was not responsible for increased foraging effort. The number of pecks to get grains was also assessed under conditions where the food tray was gradually replaced, from an easy one to more difficult ones. When tested in the separated I-maze, paired chicks pecked more in the difficult food situation without increase in the number of gained grains. Results suggest that (i) social facilitation leads to increased foraging efforts and (ii) the presence of a conspecific is alone may lead to enhanced foraging efforts in chicks. These findings are discussed in terms of possible ecological background of social facilitation.

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Localized lesions of ventral striatum, but not arcopallium, enhanced impulsiveness in choices based on anticipated spatial proximity of food rewards in domestic chicks

Cited by 21 publications

References 38 publications

Nucleus accumbens subregions: hodological and immunohistochemical study in the domestic chick (Gallus domesticus)

Nucleus accumbens subregions: hodological and immunohistochemical study in the domestic chick (Gallus domesticus)

Neuro-economics in chicks: Foraging choices based on amount, delay and cost

Social Facilitation Revisited: Increase in Foraging Efforts and Synchronization of Running in Domestic Chicks

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