Early Acquisition of Scrambling in Japanese

1994 ◽  
pp. 253 ◽  
Author(s):  
Yukio Otsu
Keyword(s):  
Early Acquisition

scholarly journals Hippocampal Interneurons are Required for Trace Eyeblink Conditioning in Mice

2021 ◽  
Author(s):  
Wei-Wei Zhang ◽  
Rong-Rong Li ◽  
Jie Zhang ◽  
Jie Yan ◽  
Qian-Hui Zhang ◽  
...  
Keyword(s):  
Eyeblink Conditioning ◽  
Pyramidal Cells ◽  
Conditioned Eyeblink ◽  
Cellular Mechanisms ◽  
Sustained Activity ◽  
Early Acquisition ◽  
Freely Moving ◽  
Trace Eyeblink Conditioning

AbstractWhile the hippocampus has been implicated in supporting the association among time-separated events, the underlying cellular mechanisms have not been fully clarified. Here, we combined in vivo multi-channel recording and optogenetics to investigate the activity of hippocampal interneurons in freely-moving mice performing a trace eyeblink conditioning (tEBC) task. We found that the hippocampal interneurons exhibited conditioned stimulus (CS)-evoked sustained activity, which predicted the performance of conditioned eyeblink responses (CRs) in the early acquisition of the tEBC. Consistent with this, greater proportions of hippocampal pyramidal cells showed CS-evoked decreased activity in the early acquisition of the tEBC. Moreover, optogenetic suppression of the sustained activity in hippocampal interneurons severely impaired acquisition of the tEBC. In contrast, suppression of the sustained activity of hippocampal interneurons had no effect on the performance of well-learned CRs. Our findings highlight the role of hippocampal interneurons in the tEBC, and point to a potential cellular mechanism subserving associative learning.

Aspects of adult-child communication: the problem of question acquisition

1975 ◽  
Vol 2 (2) ◽  
pp. 251-260 ◽  
Author(s):  
Svenka Savić
Keyword(s):  
Adult Child ◽  
Direct Communication ◽  
Dizygotic Twins ◽  
Child Interaction ◽  
The Subject ◽  
Early Acquisition ◽  
Children First

This note attempts to clarify the early acquisition of the interrogative system, with data from Serbo-Croatian. The subject is approached from an angle that has hitherto not received sufficient treatment: adult-child interaction in direct communication. The process of question acquisition was observed in a first-born pair of dizygotic twins – a girl, Jasmina, and a boy, Danko – between I; I and 3; 0, the observation beginning a month prior to the time when the children first began to produce questions. The material was transcribed during weekly two-hour sessions in the home of the subjects.

Note on Frustration Theory and the Partial Reinforcement Effect following a Few Acquisition Trials

1971 ◽  
Vol 28 (1) ◽  
pp. 81-82
Author(s):  
A. M. Padilla
Keyword(s):  
Partial Reinforcement Effect ◽  
Acquisition Training ◽  
Partial Reinforcement ◽  
Frustration Theory ◽  
Reinforcement Effect ◽  
Acquisition Process ◽  
Early Acquisition

Frustration theory (Amsel, 1958) is unable to explain partial reinforcement effects following limited acquisition training. It is suggested that attempts to explain these findings may have implications for conditioning theories in general, and that more attention should be given to the early acquisition process.

Effects of Ionized Air on Early Acquisition of Sidman Avoidance Behavior by Rats

1977 ◽  
Vol 41 (3_suppl) ◽  
pp. 1071-1074 ◽  
Author(s):  
Virginia Falkenberg ◽  
Roger E. Kirk
Keyword(s):  
Avoidance Response ◽  
Avoidance Behavior ◽  
Avoidance Performance ◽  
Albino Rats ◽  
Sidman Avoidance ◽  
Sprague Dawley ◽  
Air Ions ◽  
Air Ionization ◽  
Early Acquisition ◽  
Ionized Air

This research investigated the effects of positive and negative air ionization on the early acquisition of a Sidman (1953) avoidance response. The subjects were 20 male albino rats of the Sprague-Dawley strain. They were randomly assigned to ionization conditions and given 4 2-hr. acquisition sessions. The temporal parameters of the task were a response-shock interval of 20 sec. and a shock-shock interval of 5 sec. Shocks were delivered as 1-ma. pulses of 1 sec. duration. The results indicated that at the end of 4 2-hr. sessions the avoidance performance of rats trained in the presence of negative air ions was superior to that of rats trained in the presence of positive air ions.

Mandarin-speaking three-year-olds' demonstration of productive knowledge of syntax: evidence from syntactic productivity and structural priming with the SVO-ba alternation

2013 ◽  
Vol 41 (5) ◽  
pp. 1115-1146 ◽  
Author(s):  
DONG-BO HSU
Keyword(s):  
The Other ◽  
Order Effects ◽  
Structural Priming ◽  
Input Frequency ◽  
Early Acquisition ◽  
Mandarin Speakers

ABSTRACTTwo studies investigated syntactic productivity in three-year-old Mandarin speakers' use of verbs in the SVO and SbaOV constructions. In Study 1, children were taught novel verbs in one construction and assessed for their production in the other construction. Children produced verbs taught in the ba constructions in SVO utterances, but showed order effects when producing verbs taught in SVO constructions in ba utterances. In Study 2, children described animated scenes either with structural priming (i.e., after hearing verbs in SVO or ba constructions). Children demonstrated structural priming, producing more SVO and ba utterances, respectively, directly after hearing verbs in these constructions. These results indicate that Mandarin speaking three-year-olds demonstrate productive knowledge of both SVO and SbaOV constructions. Their ability to override the predominant input frequency of SVO runs counter to a purely usage-based account of early acquisition of grammar.

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