Abstract
Cognitive biases can arise from cognitive processing under affective states and reflect the impact of emotion on cognition. In animal studies, the existing methods for detecting animal emotional state are still relatively limited, and cognitive bias test has gradually become an important supplement. In recent years, its effectiveness in animal research related to neuropsychiatric disorders has been widely verified. Some studies have found that cognitive bias test is more sensitive than traditional test methods such as forced swimming test and sucrose preference test in detecting emotional state. Therefore, it has great potential to become an important tool to measure the influence of neuropsychiatric disorder-associated emotions on cognitive processing. Moreover, it also can be used in early drug screening to effectively assess the potential effects or side effects of drugs on affective state prior to clinical trials. In this mini-review, we summarize the application of cognitive bias tests in animal models of neuropsychiatric disorders such as depression, anxiety, bipolar disorder, and pain. We also discussed its critical value in the identification of neuropsychiatric disorders and the validation of therapeutic approaches.
Introduction
Emotions can cause the brain to distort the truth, leading to a discrepancy between what we believe is true and reality. Cognitive bias is the tendency of the brain to process information in favor of certain emotional valence (Lovibond and Lovibond, 1995). Positive emotions lead to positive cognitive biases, while negative emotions cause negative biases, affecting multiple cognitive processes such as attention, memory, and decision-making (Everaert et al., 2012). The phenomenon of cognitive bias is widespread, especially in neuropsychiatric disorders. The concept of “cognitive bias” was first proposed by Beck in the study of patients with depression (Beck, 1967). Based on Beck’s theory, early adverse experiences can trigger negative cognitive schemas leading to negative views of the self, the world, and the future, which in turn lead to biases in cognitive processing (Segal, 1988). According to Bower’s theory of mood congruity (Bower, 1981), during cognitive processing, individuals tend to focus, process, and recall information that is consistent with their emotional state, resulting in cognitive biases.
Cognitive biases can be divided into three types: attentional bias, interpretation bias, and memory bias. Attentional bias indicates that individuals are more likely to allocate attention to stimuli consistent with their current emotional state (Mennen et al., 2019). In animal research, attentional bias can be investigated by analyzing the behavioral response to threatening stimuli (Lee et al., 2016; Luo et al., 2019). Interpretation bias affects decision-making processes. Individuals are more likely to interpret ambiguous cues to be consistent with their current affective state (Everaert, 2021). Interpretation bias in animal research is often measured using the judgment bias test (JBT) (Nguyen et al., 2020), which relies on certain behaviors (like bar-pressing) and these results are then interpreted with respect to certain human constructs, one of them being “attitude” (see more details in Table 1). For example, animals in a more positive affective state tend to interpret ambiguous cues in a more positive way. Memory bias is most often measured through the affective bias test (ABT) and the modified affective bias test (mABT) in animals (Mitte, 2008). The ABT is based on the assumption that emotional state during the memory coding stage affects the perception of reward value (Stuart et al., 2013), while the mABT examines the ability of an animal to form memory bias based on reward value (Stuart et al., 2015).
TABLE 1
| Paradigm | Stimuli/Cues | Reward | Punishment | Training duration | Testing duration | References |
| Auditory judgment bias test | Tones | Sweetened condensed milk | Electric shock | 3 phases, 21−27 days, 1 session/day, 30 min or 20 trials/session | 6 days, 1 session/day, 23 trials/session | Enkel et al., 2010 |
| One food pellet | Air-puff | 3 phases, 15−40 days, 1 session/day | 40 min or when 66 trials were completed | Jones et al., 2018 | ||
| 3 phases, 16−22 days, 1 session/day | 40 min or when 60 trials were completed | |||||
| Four reward pellets (high reward); one reward pellet (low reward) | \ | 4 phases, 23−29 days, 1 session/day, maximum 100 trials or 60 min/session | 2 sessions of 100 trials, 2 sessions of 120 trials, 1 session/day | Hales et al., 2020 | ||
| Spatial judgment bias test | Positions | Overhead light off and 20 mg chocolate flavored pellet paired with one arm | Overhead light on paired with another arm | 6 days, 10 min/day | 10 min | Novak et al., 2015 |
| One food pellet (high reward); one quinine-soaked pellet (low reward) | \ | 2 days, 12 trials/day | 3 days, 13 trials/day | Burman et al., 2009 | ||
| Tactile judgment bias test | Sandpapers | Chocolate (high reward); cheerio (low reward) | \ | Minimum 10 days, 4 trials/day | 5 days, 4 trials/day | Brydges et al., 2012 |
| Visual judgment bias test | Bars | Sweet condensed milk | Houselight on | 9 phases, 89−111 days, maximum 50 trials/day | 5 days, 50 trials/day and no more than 30 min/day | Krakenberg et al., 2019 |
| Olfactory judgment bias test | Scents | Dried, sweetened banana chips (high reward), regular rodent chow (low reward) | \ | 3 phases, 17−19 days, 2−4 trials/day | 3 trials, 2 min/trial | Resasco et al., 2021 |
| Affective bias test | Substrates | One sugar tablet | \ | 5 days | 5 days, including 4 days for reward pairing, and 1 day for preference testing (1 session, 30 trials) | Stuart et al., 2013, 2015 |
| Modified affective bias test | Substrates | Two sugar tablets (high reward); one sugar tablet (low reward) | \ | *5 days | 5 days, including 4 days for reward pairing, and 1 day for preference testing (1 session, 30 trials) | Stuart et al., 2013; Hinchcliffe et al., 2017 |
Some methodological details of representative cognitive bias paradigms.
*In the current studies, the modified affective bias test is often carried out after the affective bias test, therefore no additional training is required before testing.
Animal experiments are an important complement to human research, especially in the study of neurological and psychological phenomena. Animal research has unique advantages to investigate the underlying mechanisms of these phenomena. For ethical considerations, pharmacological, genetic, and invasive human research is greatly limited, while neurophysiological methods that simulate abnormal states and pharmacological experiments in animals can be conducted to explore specific brain regions, neurons, and even molecules, to better understand the mechanisms behind phenomena, leading to targeted interventions. Harding et al. (2004) were the first to use cognitive bias testing in animals. The presented mini-review briefly summarizes the application of cognitive bias tests in animal research to further explore cognitive bias alterations in neuropsychiatric disorders and the neuropsychological mechanism of cognitive bias, which can ultimately lead to the early identification and treatment of these disorders.
Application of Animal Cognitive Bias Testing
Cognitive Bias in Neuropsychiatric Disorders
Many neuropsychiatric disorders are accompanied by emotional alterations which in turn can lead to cognitive biases. One application of cognitive bias testing is to reflect the affective state under different disorders. Currently, cognitive bias tests have been applied in animal models of depression, anxiety, bipolar disorder, and pain (see more details in Table 2). The next section briefly discusses the application of cognitive bias tests in some disorders.
TABLE 2
| Models of neuropsychiatric disorders | Animals | Gender | Paradigm | Bias |
| Depression | ||||
| Chronic psychosocial stress: daily social defeat for 3 weeks | Sprague Dawley rats | Male | Auditory judgment bias test | Negative; Papciak et al., 2013 |
| Chronic restraint stress: 1-h daily immobilization for 3 weeks | Sprague Dawley rats | Male | Auditory judgment bias test | Negative; Rygula et al., 2013 |
| Chronic unpredictable mild stress (CUMS): Both physical and social stressors were presented randomly across the light/dark cycle | Long-Evans rats | Male | Tactile judgment bias test | Negative; Chaby et al., 2013 |
| Early life adversity: Maternal separation | Sprague Dawley rats | Male | Auditory judgment bias test; | Non-significant; Stuart et al., 2019 |
| Affective bias test; Modified affective bias test | More prone to corticosterone induced negative bias; A significant deficit in reward-associated positive bias; Stuart et al., 2019 | |||
| Early life adversity: Early life competition | European starlings | Male and female | Visual judgment bias test | Negative; Bateson et al., 2015 |
| Genetic model: 5-HTT knockout | Wildtype (+/+), heterozygous (+/−), and homozygous (−/−) 5-HTT knockout mice | Female | Spatial judgment bias test | No significant difference between the three groups; Kloke et al., 2014 |
| Genetic model: Learned helpless model | Congenitally helpless (cLH) and congenitally non-helpless (cNLH) rats | Male | Spatial judgment bias test | More negative in cLH rats than that in cNLH rats; Enkel et al., 2010; Richter et al., 2012 |
| Auditory judgment bias test | ||||
| 5-HT depletion model: Para-chlorophenylalanine (pCPA) (50 mg/kg) for 6 days | German Landrace piglets | Female | Spatial judgment bias test | Negative; Stracke et al., 2017 |
| Exposure to an isolation stressor of 60 min | Gallus | Male | Visual judgment bias test | Negative; Salmeto et al., 2011; Hymel and Sufka, 2012 |
| Anxiety | ||||
| Change in light levels: Switch from low to high light levels | Lister-hooded rats | Male | Spatial judgment bias test | Negative; Burman et al., 2009 |
| Light stimuli: Red or white light | BALB/c mice | Male | Olfactory judgment bias test | Negative bias in white light than in red light; Boleij et al., 2012 |
| Anxiogenic drug FG7142 (3.0, 5.0 mg/kg) | Lister-hooded rats | Male | Auditory judgment bias test | Negative; Hales et al., 2016 |
| FG7142 (1.0, 3.0, 5.0 mg/kg) | Lister-hooded rats | Male | Affective bias test | Negative in 3.0, 5.0 mg/kg and non-significant in 1.0 mg/kg; Stuart et al., 2013 |
| FG7142 (5.0 mg/kg) | Lister-hooded rats | Male | Affective bias test | Negative; Stuart et al., 2015 |
| FG7142 (3.0, 6.0 mg/kg) | Sprague Dawley rats | Male | Affective bias test | Negative; Hinchcliffe et al., 2017 |
| Exposure to an isolation stressor of 5 min | Gallus | Male | Visual judgment bias test | Negative; Salmeto et al., 2011; Hymel and Sufka, 2012 |
| 1-methyl-chlorophenylpiperazine(m-CPP) (2 mg/kg) | Merino sheep | Female | Attention bias test | Negative; Lee et al., 2016 |
| Bipolar disorder and Mania | ||||
| D-amphetamine (2 mg/kg) for 2 weeks | Sprague Dawley rats | Male | Auditory judgment bias test | Non-significant; Rygula et al., 2015b |
| *D-amphetamine (0.1, 0.5, 1 mg/kg) | Sprague Dawley rats | Male | Auditory judgment bias test | Positive in 1 mg/kg and non-significant in 0.1 and 0.5 mg/kg; Rygula et al., 2014 |
| *Amphetamine (0.1, 0.3 mg/kg) | Lister-hooded rats | Male | Auditory judgment bias test | Positive in 0.3 mg/kg and non-significant in 0.1 mg/kg; Hales et al., 2017 |
| Pain | ||||
| Chemotherapy-induced mucositis: Fluorouracil (5-FU) (150 mg/kg) | Sprague Dawley rats | Male | Tactile judgment bias test | Negative (72 h post 5-FU injection) and non-significant (120 h post 5-FU injection); George et al., 2018 |
| Partial saphenous nerve injury (PSNI) | Lister-hooded rats | Male | Affective bias test; | Negative bias was corrected by gabapentin; 50 mg/kg; Phelps et al., 2021 |
| Modified affective bias test | A significant deficit in reward-associated positive bias; Phelps et al., 2021 | |||
| Postoperative pain: Hot-iron disbudding | Holstein calves | Male | Visual judgment bias test | Negative; Neave et al., 2013 |
| Tumors transplantation | Nude mice | Male | Olfactory judgment bias test | Negative; Resasco et al., 2021 |
| Female | Non-significant; Resasco et al., 2021 | |||
Cognitive bias in animal models of neuropsychiatric disorders.
*Acute administration of amphetamines may simply induce hyperactivity rather than strictly mania.
Depression
Depression is a mood disorder accompanied by low self-esteem, impaired cognitive function, and decreased pleasure (Monroe and Anderson, 2015). In human studies of cognitive bias, it was found that depressed subjects are more inclined to focus on negative stimuli (Armstrong and Olatunji, 2012), choose more negative words as self-descriptive (Dainer-Best et al., 2018), and recall more negative items and less positive items on memory tests (Bianchi et al., 2020). Harding et al. were the first to apply the judgment bias paradigm to investigate the cognitive bias of rats (Harding et al., 2004), demonstrating that the JBT can be used to detect negative emotions in animals.
Animal models of depression include chronic stress, learned helplessness, deficits in the serotonin system, and adverse experiences in early life (Czéh et al., 2016). Rats exposed to chronic physical stress or chronic psychosocial stress negatively interpret ambiguous cues, approach rewards more slowly, and experience a series of long-term cognitive and behavioral changes (Salmeto et al., 2011; Hymel and Sufka, 2012; Chaby et al., 2013; Papciak et al., 2013). Compared with congenitally non-helpless rats, congenitally helpless rats showed decreased positive responses and increased negative responses to ambiguous cues (Enkel et al., 2010; Richter et al., 2012). A study found that inhibiting serotonin synthesis through para-chlorophenylalanine (pCPA) dosing in pigs leads to a shift to more pessimistic judgments of ambiguous stimuli (Stracke et al., 2017). Results from early adverse experience models have shown lowered expectation of reward in response to ambiguous information (Bateson et al., 2015). Of particular interest, Stuart et al. (2019) found that rats experiencing maternal separation were more prone to corticosterone-induced negative bias and showed a deficit in reward-associated positive bias in mABT, whereas no significant difference was found in the sucrose preference test. This finding indicates that cognitive bias testing is a sensitive and important tool in depression-like state assessment.
Forced swimming test, sucrose preference test, and open-field test are widely used in animal studies to detect depression-like behaviors such as behavioral despair, anhedonia, and exploratory behaviors (Hu et al., 2017). These tests do not require training, while cognitive biased tasks require long-term and complex conditional training, as shown in Table 1. Although the cognitive bias test needs more experimental efforts, the affective bias measured by it could not be replaced by other tests (Robinson, 2018). Therefore, cognitive bias test can be used as a good supplement to the commonly used depression-like behavior test and plays a unique role in mechanism research (Stuart et al., 2015) and drug screening (Stuart et al., 2017).
Anxiety
Negative cognitive biases induced by anxiety can help an organism attend to threatening stimuli quickly, leading to an avoidance of potential danger. In a human study, it was found that anxious subjects exhibit an exaggerated attentional bias toward threats and overestimate detrimental consequences of events (Aue and Okon-Singer, 2015). In a JBT study of chicks under anxiety-like state, more pessimistic-like approach behaviors were exhibited to ambiguous aversive cues (Salmeto et al., 2011; Hymel and Sufka, 2012). Using pharmacological methods, one study found that sheep injected with the anxiety-stimulating drug 1-methyl-chlorophenylpiperazine (m-CPP) show increased attention toward threats accompanied by increased vigilance (Lee et al., 2016), leading to negative attentional bias. Other studies found that acute injection of anxiogenic drug FG7142 in rats led to negative cognitive bias in both judgment bias tests (Hales et al., 2016) and affective bias tests (Stuart et al., 2013, 2015; Hinchcliffe et al., 2017).
Studies have shown that high-intensity light and white light are aversive to rodents, while dim light and red light are more neutral (Burman et al., 2009; Boleij et al., 2012) and therefore, alterations in lighting can be used to manipulate anxiety level in rodents. There is strong evidence that rats trained in dim lighting conditions but tested in bright lighting conditions have longer approach latencies when exposed to ambiguous cues (Burman et al., 2009; Boleij et al., 2012), indicating that acute increase in anxiety leads to negative judgment bias.
Bipolar Disorder and Mania
Depression and mania are the two core components of bipolar disorder. The cognitive and emotional correlates of depression have been extensively studied, but related research on mania is relatively lacking. Chronic administration of the psychostimulant d-amphetamine has been used to cause manic-like symptoms in animals (Valvassori et al., 2019). Some studies have shown that acute d-amphetamine administration can induce an optimistic bias in rats (Rygula et al., 2014; Hales et al., 2017), while another study found that two consecutive weeks of amphetamine treatment does not cause significant positive bias (Rygula et al., 2015b). However, it is not clear whether acute administration of amphetamines induces a manic-like state or simply a state of hyperactivity (Minassian et al., 2016).
In clinics, the mood stabilizers lithium and valproate are the most commonly used drugs to treat bipolar disorder (Geddes and Miklowitz, 2013). They can help patients find a balance between depression and mania (McIntyre et al., 2020). An animal study found that acute administration of lithium induced optimistic bias in rats that were generally pessimistic, while no significant bias was observed after injection of valproic acid in rats that were more neutral at baseline, which suggests that the effect direction of lithium may be affected by the valence of cognitive bias (Rygula et al., 2015a). Although such studies are rare, it still suggests that cognitive bias tests have the potential to be applied to the animal study of pharmacological mechanisms associated with bipolar disorder.
Pain
Pain includes not only physiological components but emotional and cognitive components as well (Price, 2000). Pain in humans can lead to decreased quality of life, anxiety, and depression (Kendig et al., 2000), while pain in animals can lead to reduced water and food intake and abnormal grooming, nesting, and burrowing behaviors (Jirkof, 2017). Previous studies have frequently used conditioned place avoidance (CPA) to examine emotion and avoidance associated with pain (Tappe-Theodor et al., 2019). However, the emotional and cognitive components of pain may be more complex. Cognitive bias tests, such as the JBT, focus on animals’ interpretation of ambiguous information, while the ABT includes reward value. Therefore, cognitive bias tests will help to explore the emotion-motivation and cognition-evaluation dimensions of pain from diverse perspectives.
Dairy calves experiencing postoperative pain associated with hot-iron disbudding to prevent horn growth exhibited a negative interpretation of ambiguous cues (Neave et al., 2013). A study on rats with chronic inflammatory pain as a result of 5-fluorouracil (5-FU) injection to simulate chemotherapy-induced intestinal mucositis, found that 72 h after injection, optimistic decision-making was significantly reduced (George et al., 2018), while 120 h after injection, optimistic decision-making increased as the damaged intestine gradually recovered (George et al., 2018). Chronic neuropathic pain caused by saphenous nerve injury leads to a negative bias which can be corrected by gabapentin as tested by the ABT, and a reward deficit in developing value-based memory bias in the mABT (Phelps et al., 2021), suggesting that rats with chronic neuropathic pain experience negative emotions and deficits in sensitivity to reward value. In addition, a study using the JBT to examine cancer pain and discomfort in mice with tumors found that tumor-bearing male mice were more pessimistic than healthy controls (Resasco et al., 2021). In sum, these studies indicate that cognitive bias tests can effectively measure the negative emotional state caused by pain in animals from acute pain to chronic pain and that analgesics can partially correct this state, therefore can be used in the validation of therapeutic approaches.
Cognitive Bias Tests in Assessing the Effect of Drugs on Affective State
Cognitive bias tests have shown good validity in the assessment of drug-induced affective changes (Robinson, 2018), providing a new approach for preclinical drug screening. Studies using the ABT found that acute administration of the antidepressants such as fluoxetine, reboxetine, venlafaxine, and mirtazapine induced positive biases in animals (Hales et al., 2017). However, one problem with the ABT and other preclinical testing methods, such as forced swimming, is the inability to distinguish between acute and delayed onset of antidepressant action. For example, fluoxetine was found to act quickly in preclinical trials using forced swimming, but with delayed clinical onset (Cryan and Holmes, 2005). The JBT can help to resolve this issue. Acute administration of the conventional antidepressants fluoxetine, reboxetine, or venlafaxine did not cause an interpretation bias in animals compared to the clinical fast-acting antidepressant ketamine, and only long-term use of fluoxetine resulted in a positive bias (Hales et al., 2017). These data indicate that the JBT better reflects the time course of antidepressant effects and effectively screens out fast-acting drugs at the preclinical stage.
Negative emotional side effects caused by drugs can greatly reduce a patient’s quality of life, affect medication compliance, and even cause the original therapeutic regimen to be broken down (George et al., 2018). Therefore, it is critical to assess potential emotional side effects of medication during preclinical studies. Cognitive bias tests have been used to study the emotional side effects of medications. One study used ABT to test some drugs that can increase the risk of depression in clinical patients and found that lipopolysaccharides (LPS), interferons-alpha (IFN-α), and tetrabenazine (a drug for the treatment of chorea in Huntington’s disease) (Frank, 2010) can induce negative deviation in rats, but varenicline (a smoking cessation drug) (Tonstad et al., 2020), carbamazepine (an anticonvulsant) (Israel and Beaudry, 1988), or montelukast (an anti-asthma drug) (Markham and Faulds, 1998) did not induce significant bias (Stuart et al., 2017). At present, the JBT has not been widely used in the preclinical screening of emotional side effects of drugs due to its long training time and complexity. It is necessary to further develop a more sensitive, fast, and simple animal experimental paradigm for cognitive bias in future research.
Discussion
An important interpretation for the behavioral results of cognitive bias test is to reflect the emotional state of animals and its effectiveness has been widely verified (Nguyen et al., 2020), indicating potential application in animal studies associated with neuropsychiatric disorders. Compared to the forced swimming test, the JBT is more sensitive to the clinical onset time of antidepressants, while the ABT is more sensitive in the assessment of reward deficits than the sucrose preference test. Therefore, cognitive bias tests may be used for the early identification of neuropsychiatric disorders and validation of their therapies.
It should be mentioned that in addition to the change of emotional state, motivation factors can also affect cognitive bias. For example, Enkel et al. (2010) noticed that in different depression-like states, a pessimistic judgment bias toward ambiguous cues could result from a decrease in positive response rate coupled with either (1) an increase in negative response rate or (2) an increase in omission rate. The former may reflect increased motivation to avoid potential punishment, whereas the latter may reflect decreased motivation to approach potential reward. This indicates that even in similar affective states, different motivational mechanisms may underlie the formation of bias. Due to the length of the min-review, we cannot discuss more, but we refer interested readers to the review by Lewis et al. (2019) and a recent paper by Neville et al. (2020), both of which provide an in-depth discussion on this topic.
The psychological mechanisms underlying the emergence and transition of cognitive bias remain unclear. One theory explains the emergence of cognitive bias from the perspective of biological evolution and adaptation (Durisko et al., 2015). In everyday life, most information is ambiguous with few explicit cues. Therefore, individuals must use prior experiences to interpret the meaning of current situation ambiguous cues (Norbury et al., 2018). This cognitive process is vital to animal survival and is an adaptive behavior that can be influenced by cognitive bias, which can be advantageous in limiting cognitive resources for faster and more efficient decision-making (Enkel et al., 2010). However, in some disorders, cognitive bias may remain constant, leading to non-adaptive behaviors. For example, negative cognitive biases associated with depression are developed by exposure to persistent stress and other adverse factors. These negative cognitive biases lead to risk-avoidance and loss-reducing behavioral strategies (Durisko et al., 2015) which can be advantageous in an unsafe environment. However, in a safe environment, these behaviors can be non-adaptive. A depressed individual may not have the capacity to alter negative biases in different situations. The ability to alter biases to appropriately address the presented situation needs further research.
Precision medicine is a hot spot in clinical research in recent years (Manchia et al., 2020). The detection of individual emotional characteristics will help to formulate an individualized treatment plan for emotional diseases. Prior studies have shown that the effects of acute manipulation of the dopamine and serotonin systems on cognitive bias may depend on cognitive bias baseline. After acute administration of haloperidol, a dopamine D2 receptor antagonist, or escitalopram, a 5-HT reuptake inhibitor, “optimistic” rats became more pessimistic, while “pessimistic” rats became more optimistic (Golebiowska and Rygula, 2017a). Therefore, cognitive bias tests may serve to formulate therapeutic regimens based on individual patient characteristics and, as such, should be included in future neuropsychiatric drug research.
Finally, the neural mechanisms of cognitive biases are understudied. The prefrontal area plays an important role in decision-making under ambiguity and risk (Rouault et al., 2019). A study in rats found that lesions to the orbitofrontal cortex (OFC) but not to the medial PFC (mPFC) decreased the proportion of positive lever presses and increased the proportion of negative lever presses in response to ambiguous tones, indicating increased pessimism (Golebiowska and Rygula, 2017b). The basolateral amygdala is closely associated with prefrontal regions and is also involved in the assessment of ambiguity and uncertainty (Davis and Whalen, 2001). One study found that unpredictability increased c-Fos expression in the lateral amygdala of mice (Herry et al., 2007). Likewise, the lateral septum is an important area for the integration of cognitive and affective information that compares known information with unknown and inferred ambiguous cues (Wirtshafter and Wilson, 2021). A study has shown a decrease in c-Fos expression in the lateral septum in response to ambiguous cues (Boleij et al., 2012). Further research using surgery, electrophysiology, optogenetics, in vivo calcium imaging, and other techniques to study the neural correlates of cognitive bias is necessary to identify key brain regions and molecular targets of potential therapeutics.
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Statements
Author contributions
NW, J-YW, and FL contributed to the conception of the review. Y-HZ wrote the original draft of the manuscript. NW and X-XL wrote sections of the manuscript. All authors contributed to manuscript revision, read, and approved the submitted version.
Funding
This work was supported by the National Natural Science Foundation of China (NNSF) grants to NW (31671140), FL (31970926), and J-YW (31271092).
Conflict of interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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Summary
Keywords
cognitive bias test, animal research, affective state, application, memory bias, interpretation bias
Citation
Zhang Y-H, Wang N, Lin X-X, Wang J-Y and Luo F (2022) Application of Cognitive Bias Testing in Neuropsychiatric Disorders: A Mini-Review Based on Animal Studies. Front. Behav. Neurosci. 16:924319. doi: 10.3389/fnbeh.2022.924319
Received
20 April 2022
Accepted
13 June 2022
Published
01 July 2022
Volume
16 - 2022
Edited by
Jiaojian Wang, University of Electronic Science and Technology of China, China
Reviewed by
Rainer Schwarting, University of Marburg, Germany
Updates
Copyright
© 2022 Zhang, Wang, Lin, Wang and Luo.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Ning Wang, wangn@psych.ac.cn
This article was submitted to Pathological Conditions, a section of the journal Frontiers in Behavioral Neuroscience
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