Biomedical subjects

B J May

Publications and source records attributed to B J May.

5 recordsLinked to original sources

PubMed1992

Dynamic range of neural rate responses in the ventral cochlear nucleus of awake cats.

1. Response thresholds and dynamic range properties of neurons in the ventral cochlear nucleus (VCN) of awake cats were measured by fitting a computational model to rate-level functions for best frequency (BF) tone bursts and for bursts of broad-band noise. Dynamic range measurements were performed in quiet and in the presence of continuous background noise. 2. The sample of neurons obtained in the VCN of awake cats exhibited a variety of peristimulus histograms (PSTHs) and thresholds. All PSTH response types previously described in the VCN of anesthetized cats were found in awake cats. The lowest thresholds for neural responses were observed at sound pressure levels that were equivalent to behavioral thresholds of absolute auditory sensitivity. 3. When responses to BF tones or bursts of broad-band noise were recorded in quiet backgrounds, the dynamic range properties of most units in the VCN of awake cats were not significantly different from dynamic range properties of auditory nerve fibers (ANFs) in anesthetized cats or VCN units in decerebrate cats. All auditory units showed a larger dynamic range for noise bursts than for tone bursts, but VCN units with primary-like and onset PSTHs showed larger dynamic ranges for responses to noise bursts than that of ANFs and VCN chopper units. 4. When tests were performed in the presence of continuous noise, rate-level functions for BF tone bursts shifted to higher tone levels and showed a more compressed range of driven rates in comparison with data obtained in quiet. Compression of the rate-level function in noise resulted from an increase in driven rate at low tone levels and a decrease in rate at high tone levels. These changes in the rate-level function suggest that noise may reduce the range of BF tone levels that are potentially encoded by a unit's rate responses. By exhibiting larger shifts and less compression in background noise, VCN units in awake cats better preserved the dynamic range of their rate responses to BF tones than ANFs in anesthetized cats or VCN units in decerebrate cats. 5. Rate-level functions were obtained from a small sample of VCN units not only with the cat performing the behavioral task but also with the cat awake and sitting quietly in the testing apparatus. No differences in noise-induced shift or compression were noted between the two testing conditions.(ABSTRACT TRUNCATED AT 400 WORDS)

Acoustic Stimulation↗

PubMed1978

A statewide amputee rehabilitation programme.

Patients are referred to the amputee clinic at the Medical College of Georgia from all areas of the State of Georgia. Most referrals are made a considerable time after amputation and most patients live from 50 to 250 miles from the amputee clinic. A special programme was designed to alleviate some of the problems incurred by the distance and the delayed referral. Physical therapists, prosthetists, social workers, the vocational counsellor and the orthopaedic surgeon co-operate to provide maximum care on the day of the amputee clinic. The cooperative efforts of all members of the team and the ability to plan ahead for optimum rehabilitation maximize the use of patients' time and his rehabilitation level.

Amputees↗

PubMed1977

Evaluation in a competency-based educational system.

Competency-based curricula have been implemented at the Medical College of Georgia to prepare students to meet entry level competencies as physical therapists and physical therapist assistants. Criteria-referenced evaluations are used to determine if students have achieved the desired competencies. Performance is measured against the criteria and not other students. The process of developing the system currently in use at the Medical College of Georgia is delineated in some detail and some of the advantages of the system for physical therapy education are discussed.

Achievement↗

PubMed1977

An integrated problem-solving curriculum design for physical therapy education.

Development of and experience with an integrated problem-solving curriculum design for physical therapy education is presented. The basic themes which relate discrete subject areas and a method of organizing the content around the themes are described. Problem-solving learning experiences are sequenced from the simple to the complex around the kind of situations found in clinical practice. Clinical education is integrated throughout the curriculum, and a calendar is developed based on the content of the learning experiences rather than the traditional university calendar.

Curriculum↗

PubMed1976

Time unit system of fee setting.

An efficient, accurate, and simple method was developed to determine charges for physical therapy services. Based on cost accounting, the charges were developed from the direct and indirect costs of operating the department. Methods to determine operating costs are outlined and the process used to establish a time unit system is presented. The charges to the patient were developed to reflect accurately the patient's use of resources in terms of time, supplies, and share of indirect costs. A differentiation was made between direct treatment time when the patient is in actual contact with a physical therapist or physical therapist assistant and nondirect time when the patient is practicing a skill on his own. Although developed for a medical center teaching hospital, this system can be adapted to any type of facility.

Cost-Benefit Analysis↗