Discrimination of emitted behavior following septal area lesions in rats.

Gw, Van Hoesen; Jm, MacDougall; Jc, Mitchell

doi:10.1037/h0032818

Cited by 8 publications

(5 citation statements)

References 12 publications

(5 reference statements)

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“…Earlier studies obtaining similar results have attributed the altered performance of the operated rats to a change in the sensitivity to response-produced feedback. One of these studies attributed the change to increased sensitivity (Van Hoesen et al, 1972) whereas the other study attributed the change to decreased sensitivity (Ellen & Kelnhofer, 1971) . Clearly, the exact relationship between the performance of operated and control animals will depend on the demand characteristics of the experiment.…”

Section: Discussionmentioning

confidence: 99%

“…This task requires a rat to complete a ratio requirement on one lever (the ratio lever) and then press once on a second lever (the reward lever). Two studies (Ellen & Kelnhofer, 1971;Van Hoesen, MacDougall, & Mitchell, 1972) have shown that the performance of rats with septal lesions is different from control rats on this task. In the Ellen and Kelnhofer study, operated rats were found to respond on the reward lever before the ratio requirement had been completed.…”

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confidence: 99%

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Anticipatory responding in rats with septal lesions

1974

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Anticipatory responding in rats with septal lesions

1974

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“…The general DRL deficit and the beneficial effect of the " clock" stimulus can be understood if septal lesions prevent the animal from using response-generated cues effectively for timing . In line with this idea, Ellen and Kelnhoffer (1971) subsequently reported a septal deficit in a task which explicitly required the animal to use the amount of emitted behavior as a discriminative stimulus in a response chain (but see Van Hoesen, MacDougall, & Mitchell, 1972, for the opposite finding).…”

Section: Sensitivity To Response-stimulus Contiguitymentioning

confidence: 70%

Response suppression and facilitation by aversive stimuli following septal lesions in rats: A review and model

Dickinson

1974

Psychobiology

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Evidence concerning the effects of septal damage on the performance of rats in tasks involving shock and frustrative nonreward is reviewed. It is argued that the behavior of rats with septal lesions cannot be understood in terms of either a change in the functional intensity of aversive stimuli or the ability to register contingencies between such stimuli and responding. Rather, the lesion appears to decrease the suppressive property of aversive stimuli while augmenting their facilitative or drive-enhancing property. On the basis of the evidence, a model of the processing of aversive stimuli is proposed. The model assumes that aversive stimuli are processed by two relatively independent systems: a response suppression system associated with septal functioning and a response facilitation system associated with amygdala functioning. While the facilitation mechanism is activated by stimuli of both positive and negative affective value, the suppression system is sensitive to only aversive events. Further, it is suggested that an additional septal mechanism, sensitive to both positive and negative stimuli exerts inhibitory control over the facilitation system. '

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“…Braggio and Ellen (1974) have demonstrated that by providing the septal damaged rat with differential proprioceptive feedback, differences between normal and septal rats on a DRL schedule are eliminated. It is certainly not clear, then, from Braggio and Ellen (1974), the present study, Morgan and Mitchell (1969), Sodetz (1970), and Van Hoesen et al (1972) that the septal damaged animal even suffers from a deficiency in the use of proprioceptive information. It is apparent, contrary to some investigations (Caplan, 1973;Lubar & Numan, 1973), that in certain situations internal response-produced information seems to be preferred and to be of clear use to animals with septal damage.…”

Section: Behavioralmentioning

confidence: 91%

“…A number of studies, however, indicate that rather than being deficient in their use of internal information, animals with septal area lesions are quite efficient in their use of these types of cues. Van Hoesen, MacDougall, and Mitchell (1972) have shown that animals with septal lesions are more efficient than normal animals on a two-bar ratio schedule where a high response output is required . Morgan and Mitchell (1969) and Sodetz (1970) have shown that rats with septal lesions are superior to normal animals when performing on a Sidman avoidance schedule.…”

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confidence: 99%

Internal and external cue use following septal ablation in the rat

Kratz

Mitchell

1977

Psychobiology

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As a result of a proposed response-produced cue deficit in rats with septal damage, an attempt was made to determine whether rats with such damage would be overly dependent on exteroceptive cues. Normal and septallesioned rats were trained to perform a behavioral chain where both exteroceptive and response-produced cues could be used. During extinction, these two sets of cues were placed in conflict in order to determine their relative contributions to performance of the chain. Septal rats primarily used response-produced cues, whereas normal animals randomly used the available cues. It was concluded that normal and septallesioned rats differed in their use of external and internal information, but in a direction opposite to that suggested by the literature. Ellen and Butter (1969) have demonstrated that the addition of a cue light significantly improves performance of rats with septal lesions on a task requiring low rates of responding (DRL). Since the cue light signals the end of the required delay of responding, they conclude that the septal deficit on DRL schedules is the result of an inability of these animals to use the response-produced, proprioceptive stimuli used by normal animals . We have demonstrated in our own laboratory (Mitchell & Kratz, Note 1) that, unlike normal rats, septal-lesioned rats which are deficient in two-bar ratio performance (Ellen & Kelnhofer, 1971) are facilitated by the addition of external cue lights. Srebro's (1974) study of retention deficits in successive position reversals indicates that the addition of a visual cue also improves performance of rats with septal lesions on this task. Srebro further shows that the saliency of the visual cue with respect to its correlation with the position reversal will systematically improve performance on the task as saliency increases. Thomas (1972), in a thorough investigation of spontaneous alternation, was able to determine that rats with septal lesions consistently choose to respond to external sensory rather than internal somatomotor cues. Each of these studies demonstrates the septal-damaged animal's increased dependency on external information and support Ellen and Butter's hypothesis. In agreement with this hypothesis, reviews by Lubar and Numan (1973) and Caplan (1973) produced cues. A number of studies, however, indicate that rather than being deficient in their use of internal information, animals with septal area lesions are quite efficient in their use of these types of cues. Van Hoesen, MacDougall, and Mitchell (1972) have shown that animals with septal lesions are more efficient than normal animals on a two-bar ratio schedule where a high response output is required . Morgan and Mitchell (1969) and Sodetz (1970) have shown that rats with septal lesions are superior to normal animals when performing on a Sidman avoidance schedule. Since performance on these tasks presumably requires the use of responseproduced cues, such findings are inconsistent with the notion that septal damage leads to a deficit in the use of response-...

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Discrimination of emitted behavior following septal area lesions in rats.

Cited by 8 publications

References 12 publications

Anticipatory responding in rats with septal lesions

Anticipatory responding in rats with septal lesions

Response suppression and facilitation by aversive stimuli following septal lesions in rats: A review and model

Internal and external cue use following septal ablation in the rat

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