Activation But Not Inhibition of the Indirect Pathway Disrupts Choice Suppression in a Freely Moving, Multiple Choice Foraging Task

2020 ◽  
Author(s):  
Kristen Delevich ◽  
Benjamin Hoshal ◽  
Yuting Zhang ◽  
Satya Vedula ◽  
Anne GE Collins ◽  
...  
Keyword(s):  
Multiple Choice ◽  
Indirect Pathway ◽  
Freely Moving ◽  
Foraging Task

scholarly journals Choice suppression is achieved through opponent but not independent function of the striatal indirect pathway in mice

2019 ◽  
Author(s):  
Kristen Delevich ◽  
Benjamin Hoshal ◽  
Anne GE Collins ◽  
Linda Wilbrecht
Keyword(s):  
Action Selection ◽  
Projection Neurons ◽  
Independent Function ◽  
Indirect Pathway ◽  
Successful Design ◽  
Freely Moving ◽  
Foraging Task ◽  
Simple Fashion ◽  
Dorsomedial Striatum

AbstractThe dorsomedial striatum (DMS) plays a key role in action selection, but little is known about how direct and indirect pathway spiny projection neurons (dSPNs and iSPNs) contribute to choice suppression in freely moving animals. Here, we used pathway-specific chemogenetic manipulation during a serial choice foraging task to test opposing predictions for iSPN function generated by two theories: 1) the ‘select/suppress’ heuristic which suggests iSPN activity is required to suppress alternate choices and 2) the network-inspired Opponent Actor Learning model (OpAL) which proposes that the weighted difference of dSPN and iSPN activity determines choice. We found that chemogenetic activation, but not inhibition, of iSPNs disrupted learned suppression of nonrewarded choices, consistent with the predictions of the OpAL model. Our findings suggest that iSPNs’ role in stopping and freezing does not extend in a simple fashion to choice suppression. These data may provide insights critical for the successful design of interventions for addiction or other conditions in which suppression of behavior is desirable.

scholarly journals All-optical imaging and patterned stimulation with a one-photon endoscope

2021 ◽  
Author(s):  
Jinyong Zhang ◽  
Ryan N Hughes ◽  
Namsoo Kim ◽  
Isabella P Fallon ◽  
Konstantin I bakhurin ◽  
...  
Keyword(s):  
Neural Activity ◽  
Calcium Imaging ◽  
Neural Circuit ◽  
Integrated System ◽  
Striatal Neurons ◽  
Indirect Pathway ◽  
Cellular Resolution ◽  
All Optical ◽  
Freely Moving

While in vivo calcium imaging makes it possible to record activity in defined neuronal populations with cellular resolution, optogenetics allows selective manipulation of neural activity. Recently, these two tools have been combined to stimulate and record neural activity at the same time, but current approaches often rely on two-photon microscopes that are difficult to use in freely moving animals. To address these limitations, we have developed a new integrated system combining a one-photon endoscope and a digital micromirror device for simultaneous calcium imaging and precise optogenetic photo-stimulation with near cellular resolution (Miniscope with All-optical Patterned Stimulation and Imaging, MAPSI). Using this highly portable system in freely moving mice, we were able to image striatal neurons from either the direct pathway or the indirect pathway while simultaneously activating any neuron of choice in the field of view, or to synthesize arbitrary spatiotemporal patterns of photo-stimulation. We could also select neurons based on their relationship with behavior and recreate the behavior by mimicking the natural neural activity with photo-stimulation. MAPSI thus provides a powerful tool for interrogation of neural circuit function in freely moving animals.

scholarly journals Macaques are risk-averse in a freely moving foraging task

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Benjamin R. Eisenreich* ◽  
Benjamin Y. Hayden ◽  
Jan Zimmermann
Keyword(s):  
Evolutionary History ◽  
Rhesus Macaques ◽  
Ecological Validity ◽  
Risk Preference ◽  
Task Design ◽  
Risk Attitudes ◽  
Risk Averse ◽  
Risk Seeking ◽  
Freely Moving ◽  
Foraging Task

Abstract Rhesus macaques (Macaca mulatta) appear to be robustly risk-seeking in computerized gambling tasks typically used for electrophysiology. This behavior distinguishes them from many other animals, which are risk-averse, albeit measured in more naturalistic contexts. We wondered whether macaques’ risk preferences reflect their evolutionary history or derive from the less naturalistic elements of task design associated with the demands of physiological recording. We assessed macaques’ risk attitudes in a task that is somewhat more naturalistic than many that have previously been used: subjects foraged at four feeding stations in a large enclosure. Patches (i.e., stations), provided either stochastically or non-stochastically depleting rewards. Subjects’ patch residence times were longer at safe than at risky stations, indicating a preference for safe options. This preference was not attributable to a win-stay-lose-shift heuristic and reversed as the environmental richness increased. These findings highlight the lability of risk attitudes in macaques and support the hypothesis that the ecological validity of a task can influence the expression of risk preference.

scholarly journals Risk aversion in macaques in a freely moving patch-leaving foraging task

2018 ◽  
Author(s):  
B. R Eisenreich ◽  
Benjamin Y. Hayden
Keyword(s):  
Evolutionary History ◽  
Risk Preference ◽  
Task Design ◽  
Risk Attitudes ◽  
Risk Averse ◽  
Risk Seeking ◽  
Major Exception ◽  
Naturalistic Environment ◽  
Freely Moving ◽  
Foraging Task

ABSTRACTAnimals, including humans, are risk-averse in most contexts. A major exception is the rhesus macaque (Macaca mulatta), which is robustly risk-seeking. Macaques‘ unique preferences may reflect their unique evolutionary history. Alternatively, they may derive from elements of task design associated with the demands of physiological recording, the source of nearly all macaque risk preference data. To disambiguate these possibilities we assessed macaques’ risk attitudes in a somewhat more naturalistic environment: subjects foraged at four feeding stations in a large enclosure. Stations (i.e. patches) provided either stochastically or non-stochastically depleting rewards. Subjects’ patch residence times were longer at safe than at risky stations, indicating a preference for safe options. This preference was not attributable to a win-stay-lose-shift heuristic. These findings highlight the lability of risk attitudes in macaques and support the hypothesis that observed differences between macaques and other species are ephemeral, not evolved.

scholarly journals Distinct value encoding in striatal direct and indirect pathways during adaptive learning

2018 ◽  
Author(s):  
Christopher H. Donahue ◽  
Max Liu ◽  
Anatol C. Kreitzer
Keyword(s):  
Decision Making ◽  
Adaptive Learning ◽  
Medium Spiny Neurons ◽  
Indirect Pathway ◽  
Related Information ◽  
Spiny Neurons ◽  
Co Activation ◽  
History Of ◽  
Foraging Task ◽  
Adaptive Decision Making

ABSTRACTThe striatum is thought to play a central role in action selection and reinforcement, and optogenetic experiments suggest differential roles for direct- and indirect-pathway medium spiny neurons (dMSNs and iMSNs). However, the encoding of value-related information in dMSNs and iMSNs during adaptive decision-making is not well understood. We trained mice on a dynamic foraging task where they had to learn the value of different options based on their recent history of choices and outcomes. Single-cell calcium imaging in dorsomedial striatum revealed that dMSNs and iMSNs were oppositely modulated by the updated value of the different options. Additionally, we found that iMSNs were more active as animals slowed between trials, likely reflecting ongoing changes in motivational state. Together, our results demonstrate that co-activation of dMSNs and iMSNs during action initiation does not simply encode action identity, but instead reflects pathway-specific encoding of movement, motivation, and value information necessary for adaptive decision-making.

Nonrestricted multiple-choice examination items

1982 ◽  
Vol 46 (8) ◽  
pp. 485-488
Author(s):  
R Kolstad ◽  
P Goaz ◽  
R Kolstad
Keyword(s):  
Multiple Choice

Stuttering-Related Podcasts: Audio-Based Self-Help for People Who Stutter

2020 ◽  
Vol 5 (5) ◽  
pp. 1131-1138
Author(s):  
Lauren E. Dignazio ◽  
Megan M. Kenny ◽  
Erik X. Raj ◽  
Kyle D. Pelkey
Keyword(s):  
Support Groups ◽  
Support Group ◽  
Online Survey ◽  
Multiple Choice ◽  
Speech Language Pathologists ◽  
Group Leaders ◽  
Self Help ◽  
Group Members

Purpose It is known that people who stutter (PWS) benefit from self-help experiences, such as attending support groups or conferences. However, limited research has been done to explore the listening of stuttering-related podcasts as a form of self-help for PWS. This study seeks to understand the reasons why PWS listen to stuttering-related podcasts and provide descriptions of their listening experiences. Method Thirty-three PWS who have listened to stuttering-related podcasts were recruited to participate in an online survey that included multiple-choice and open-ended questions. Responses were analyzed and grouped into descriptive themes. Results Participants reported listening to stuttering-related podcasts as a way to gain information and perspective. They also reported experiences that fit themes of empowerment and camaraderie, as a result of listening. Conclusions Stuttering-related podcasts seem to be a positive self-help tool for PWS. Stuttering support group leaders and/or speech-language pathologists may consider introducing their group members or clients who stutter to this type of audio-based self-help experience.

A Developmental Study of Intonation Recognition

1968 ◽  
Vol 11 (4) ◽  
pp. 825-832 ◽  
Author(s):  
Marilyn M. Corlew
Keyword(s):  
Significant Interaction ◽  
Multiple Choice ◽  
Semantic Content ◽  
First Grade ◽  
Choice Test ◽  
Developmental Study ◽  
Multiple Choice Test ◽  
The Third ◽  
Matching Test ◽  
Better Than

Two experiments investigated the information conveyed by intonation from speaker to listener. A multiple-choice test was devised to test the ability of 48 adults to recognize and label intonation when it was separated from all other meaning. Nine intonation contours whose labels were most agreed upon by adults were each matched with two English sentences (one with appropriate and one with inappropriate intonation and semantic content) to make a matching-test for children. The matching-test was tape-recorded and given to children in the first, third, and fifth grades (32 subjects in each grade). The first-grade children matched the intonations with significantly greater agreement than chance; but they agreed upon significantly fewer sentences than either the third or fifth graders. Some intonation contours were matched with significantly greater frequency than others. The performance of the girls was better than that of the boys on an impatient question and a simple command which indicates that there was a significant interaction between sex and intonation.

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